The Experts below are selected from a list of 41616 Experts worldwide ranked by ideXlab platform
Guanglei Cui - One of the best experts on this subject based on the ideXlab platform.
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a fluorinated polycarbonate based all solid state Polymer Electrolyte for lithium metal batteries
Electrochimica Acta, 2020Co-Authors: Jianjun Zhang, Xinhong Zhou, Qinglei Wang, Xiaochen Liu, Zili Cui, Xuehui Shangguan, Huanrui Zhang, Kun Tang, Guanglei CuiAbstract:Abstract Poly(ethylene oxide) (PEO) is a promising matrix for solid Polymer Electrolyte, but its inferior mechanical strength and relative low oxidation stability especially at elevated temperatures hamper its further applications. A novel fluorinated polycarbonate Polymer of poly(2,2,3,3-tetrafluoro butyl carbonate) with cyano ends (cPTFBC) was synthesized for the first time and was composited with PEO based Electrolyte by physical blending to resolve the above issues. The addition of cPTFBC can effectively enhance the mechanical strength at elevated temperature. In addition, the as-prepared PEO-cPTFBC based Electrolyte shows an enlarged electrochemical window up to 4.7 V at 60 °C and a high Li ion transference number (0.33). More importantly, the PEO-cPTFBC based all solid state Polymer Electrolyte presents excellent compatibility with lithium metal and improved LiCoO2/Li battery performance compared with PEO based Electrolyte. These outstanding performance of the cPTFBC based Electrolyte make it promising as solid Polymer Electrolyte for lithium metal batteries.
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a superior Polymer Electrolyte with rigid cyclic carbonate backbone for rechargeable lithium ion batteries
ACS Applied Materials & Interfaces, 2017Co-Authors: Jingchao Chai, Zhihong Liu, Jianjun Zhang, Xinhong Zhou, Kun Tang, Jinran Sun, Zeyi Tian, Guanglei CuiAbstract:The fabricating process of well-known Bellcore poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP)-based Polymer Electrolytes is very complicated, tedious, and expensive owing to containing a large amount of fluorine substituents. Herein, a novel kind of poly(vinylene carbonate) (PVCA)-based Polymer Electrolyte is developed via a facile in situ Polymerization method, which possesses the merits of good interfacial compatibility with electrodes. In addition, this Polymer Electrolyte presents a high ionic conductivity of 5.59 × 10–4 S cm–1 and a wide electrochemical stability window exceeding 4.8 V vs Li+/Li at ambient temperature. In addition, the rigid cyclic carbonate backbone of poly(vinylene carbonate) endows Polymer Electrolyte a superior mechanical property. The LiFe0.2Mn0.8PO4/graphite lithium ion batteries using this Polymer Electrolyte deliver good rate capability and excellent cyclability at room temperature. The superior performance demonstrates that the PVCA-based Electrolyte via in situ po...
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A Superior Polymer Electrolyte with Rigid Cyclic Carbonate Backbone for Rechargeable Lithium Ion Batteries
2017Co-Authors: Jingchao Chai, Zhihong Liu, Jianjun Zhang, Xinhong Zhou, Kun Tang, Jinran Sun, Zeyi Tian, Guanglei CuiAbstract:The fabricating process of well-known Bellcore poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP)-based Polymer Electrolytes is very complicated, tedious, and expensive owing to containing a large amount of fluorine substituents. Herein, a novel kind of poly(vinylene carbonate) (PVCA)-based Polymer Electrolyte is developed via a facile in situ Polymerization method, which possesses the merits of good interfacial compatibility with electrodes. In addition, this Polymer Electrolyte presents a high ionic conductivity of 5.59 × 10–4 S cm–1 and a wide electrochemical stability window exceeding 4.8 V vs Li+/Li at ambient temperature. In addition, the rigid cyclic carbonate backbone of poly(vinylene carbonate) endows Polymer Electrolyte a superior mechanical property. The LiFe0.2Mn0.8PO4/graphite lithium ion batteries using this Polymer Electrolyte deliver good rate capability and excellent cyclability at room temperature. The superior performance demonstrates that the PVCA-based Electrolyte via in situ Polymerization is a potential alternative Polymer Electrolyte for high-performance rechargeable lithium ion batteries
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novel cellulose polyurethane composite gel Polymer Electrolyte for high performance lithium batteries
Electrochimica Acta, 2016Co-Authors: Kailiang Liu, Xinhong Zhou, Shanmu Dong, Meng Liu, Junmei Cheng, Chengdong Wang, Qingfu Wang, Hongguang Sun, Xiao Chen, Guanglei CuiAbstract:Abstract The increasing interest in gel Polymer Electrolyte for the lithium battery is attributed to its excellent plasticity, enhanced safety and significantly improved electrochemical stability. Herein, on account of the two-phase structure of thermoplastic polyurethane (TPU) consisting of soft and hard segments, the cellulose/TPU with ether bond composite gel Polymer Electrolyte (CGPE) was fabricated and investigated for applications in lithium batteries. This study demonstrated that the CGPE possessed preeminent comprehensive properties such as sufficient ionic conductivity (4.8 × 10 −4 S cm −1 ) at 80 °C, high lithium ion transport number (t + = 0.68) and improved electrochemical stability. Moreover, the assembled LiFePO 4 /Li battery using CGPE exhibitedoutstanding rate capacity and remarkable cycle performance at the elevated temperature of 80 °C. Notably, the discharge capacity was still 128.2 mAh g −1 after 200 cycles, 95% of the capacity retention at a charge/discharge rate of 2C. These findings suggest that CGPE is a very prospective Polymer Electrolyte for high-performance lithium batteries.
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a sustainable and rigid flexible coupling cellulose supported poly propylene carbonate Polymer Electrolyte towards 5 v high voltage lithium batteries
Electrochimica Acta, 2016Co-Authors: Zhihong Liu, Jianjun Zhang, Liping Yue, Jianghui Zhao, Xinhong Zhou, Bingsheng Qin, Xiaogang Wang, Guanglei CuiAbstract:Inspired by their higher energy density, high voltage lithium ion batteries (LIBs) have been given great attention recently. However, decomposition of traditional liquid Electrolyte hinders the development of high voltage LIBs. Herein, we explored a sustainable and rigid-flexible coupling cellulose-supported poly (propylene carbonate) (PPC) Polymer Electrolyte for LiNi0.5Mn1.5O4-based batteries. The incorporating of robust cellulose as skeleton effectively surmounts the drawback of poor mechanical integrity of the gel Polymer Electrolyte. It was demonstrated that the Polymer Electrolyte exhibited wider electrochemical window (up to 5.0 V), higher ion transference number (0.68) and higher ionic conductivity (1.14 mS cm(-1)) compared to liquid Electrolyte with commercial separator at 25 degrees C. Thus, 5 V high voltage batteries with this kind Polymer Electrolyte display excellent capacity retention and superior rate performance for at room temperature. The Above mentioned attracting characteristics would endow PPC-based Polymer Electrolyte a promising candidate for high energy density LIBs. (C) 2015 Elsevier Ltd. All rights reserved.
Xinhong Zhou - One of the best experts on this subject based on the ideXlab platform.
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a fluorinated polycarbonate based all solid state Polymer Electrolyte for lithium metal batteries
Electrochimica Acta, 2020Co-Authors: Jianjun Zhang, Xinhong Zhou, Qinglei Wang, Xiaochen Liu, Zili Cui, Xuehui Shangguan, Huanrui Zhang, Kun Tang, Guanglei CuiAbstract:Abstract Poly(ethylene oxide) (PEO) is a promising matrix for solid Polymer Electrolyte, but its inferior mechanical strength and relative low oxidation stability especially at elevated temperatures hamper its further applications. A novel fluorinated polycarbonate Polymer of poly(2,2,3,3-tetrafluoro butyl carbonate) with cyano ends (cPTFBC) was synthesized for the first time and was composited with PEO based Electrolyte by physical blending to resolve the above issues. The addition of cPTFBC can effectively enhance the mechanical strength at elevated temperature. In addition, the as-prepared PEO-cPTFBC based Electrolyte shows an enlarged electrochemical window up to 4.7 V at 60 °C and a high Li ion transference number (0.33). More importantly, the PEO-cPTFBC based all solid state Polymer Electrolyte presents excellent compatibility with lithium metal and improved LiCoO2/Li battery performance compared with PEO based Electrolyte. These outstanding performance of the cPTFBC based Electrolyte make it promising as solid Polymer Electrolyte for lithium metal batteries.
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an interpenetrating network poly diethylene glycol carbonate based Polymer Electrolyte for solid state lithium batteries
Journal of Materials Chemistry, 2017Co-Authors: Guoliang Ding, Jingchao Chai, Xinhong Zhou, Shizhen Li, Weisheng He, Chunguang PangAbstract:Polycarbonate-based Polymer Electrolytes possess superior ionic conductivity at room temperature, higher lithium ion transference number and wider electrochemical stability window when compared with conventional poly(ethylene oxide)-based Polymer Electrolytes. Herein, the poly(diethylene glycol carbonate) dimethacrylate macromonomer (PDEC-DMA) was synthesized and the resultant interpenetrating network IPN-PDEC Polymer Electrolyte was developed via free radical in situ Polymerization for Polymer Electrolyte Li metal batteries. This IPN-PDEC Polymer Electrolyte exhibited a decent ionic conductivity of 1.64 × 10−4 S cm−1 at room temperature and a wide electrochemical stability window (up to 4.5 V vs. Li+/Li). The LiFePO4/IPN-PDEC/Li and LiFe0.2Mn0.8PO4/IPN-PDEC/Li cells delivered excellent rate capability and cycling performance at room temperature. An all solid state lithium battery was also demonstrated by applying the as-prepared solid Polymer Electrolyte (SPE-PDEC) at a temperature of 100 °C, which displayed a superior cycling performance. Therefore, the IPN-PDEC network is a promising Polymer Electrolyte for solid state lithium batteries.
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a superior Polymer Electrolyte with rigid cyclic carbonate backbone for rechargeable lithium ion batteries
ACS Applied Materials & Interfaces, 2017Co-Authors: Jingchao Chai, Zhihong Liu, Jianjun Zhang, Xinhong Zhou, Kun Tang, Jinran Sun, Zeyi Tian, Guanglei CuiAbstract:The fabricating process of well-known Bellcore poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP)-based Polymer Electrolytes is very complicated, tedious, and expensive owing to containing a large amount of fluorine substituents. Herein, a novel kind of poly(vinylene carbonate) (PVCA)-based Polymer Electrolyte is developed via a facile in situ Polymerization method, which possesses the merits of good interfacial compatibility with electrodes. In addition, this Polymer Electrolyte presents a high ionic conductivity of 5.59 × 10–4 S cm–1 and a wide electrochemical stability window exceeding 4.8 V vs Li+/Li at ambient temperature. In addition, the rigid cyclic carbonate backbone of poly(vinylene carbonate) endows Polymer Electrolyte a superior mechanical property. The LiFe0.2Mn0.8PO4/graphite lithium ion batteries using this Polymer Electrolyte deliver good rate capability and excellent cyclability at room temperature. The superior performance demonstrates that the PVCA-based Electrolyte via in situ po...
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A Superior Polymer Electrolyte with Rigid Cyclic Carbonate Backbone for Rechargeable Lithium Ion Batteries
2017Co-Authors: Jingchao Chai, Zhihong Liu, Jianjun Zhang, Xinhong Zhou, Kun Tang, Jinran Sun, Zeyi Tian, Guanglei CuiAbstract:The fabricating process of well-known Bellcore poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP)-based Polymer Electrolytes is very complicated, tedious, and expensive owing to containing a large amount of fluorine substituents. Herein, a novel kind of poly(vinylene carbonate) (PVCA)-based Polymer Electrolyte is developed via a facile in situ Polymerization method, which possesses the merits of good interfacial compatibility with electrodes. In addition, this Polymer Electrolyte presents a high ionic conductivity of 5.59 × 10–4 S cm–1 and a wide electrochemical stability window exceeding 4.8 V vs Li+/Li at ambient temperature. In addition, the rigid cyclic carbonate backbone of poly(vinylene carbonate) endows Polymer Electrolyte a superior mechanical property. The LiFe0.2Mn0.8PO4/graphite lithium ion batteries using this Polymer Electrolyte deliver good rate capability and excellent cyclability at room temperature. The superior performance demonstrates that the PVCA-based Electrolyte via in situ Polymerization is a potential alternative Polymer Electrolyte for high-performance rechargeable lithium ion batteries
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novel cellulose polyurethane composite gel Polymer Electrolyte for high performance lithium batteries
Electrochimica Acta, 2016Co-Authors: Kailiang Liu, Xinhong Zhou, Shanmu Dong, Meng Liu, Junmei Cheng, Chengdong Wang, Qingfu Wang, Hongguang Sun, Xiao Chen, Guanglei CuiAbstract:Abstract The increasing interest in gel Polymer Electrolyte for the lithium battery is attributed to its excellent plasticity, enhanced safety and significantly improved electrochemical stability. Herein, on account of the two-phase structure of thermoplastic polyurethane (TPU) consisting of soft and hard segments, the cellulose/TPU with ether bond composite gel Polymer Electrolyte (CGPE) was fabricated and investigated for applications in lithium batteries. This study demonstrated that the CGPE possessed preeminent comprehensive properties such as sufficient ionic conductivity (4.8 × 10 −4 S cm −1 ) at 80 °C, high lithium ion transport number (t + = 0.68) and improved electrochemical stability. Moreover, the assembled LiFePO 4 /Li battery using CGPE exhibitedoutstanding rate capacity and remarkable cycle performance at the elevated temperature of 80 °C. Notably, the discharge capacity was still 128.2 mAh g −1 after 200 cycles, 95% of the capacity retention at a charge/discharge rate of 2C. These findings suggest that CGPE is a very prospective Polymer Electrolyte for high-performance lithium batteries.
Jianjun Zhang - One of the best experts on this subject based on the ideXlab platform.
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a fluorinated polycarbonate based all solid state Polymer Electrolyte for lithium metal batteries
Electrochimica Acta, 2020Co-Authors: Jianjun Zhang, Xinhong Zhou, Qinglei Wang, Xiaochen Liu, Zili Cui, Xuehui Shangguan, Huanrui Zhang, Kun Tang, Guanglei CuiAbstract:Abstract Poly(ethylene oxide) (PEO) is a promising matrix for solid Polymer Electrolyte, but its inferior mechanical strength and relative low oxidation stability especially at elevated temperatures hamper its further applications. A novel fluorinated polycarbonate Polymer of poly(2,2,3,3-tetrafluoro butyl carbonate) with cyano ends (cPTFBC) was synthesized for the first time and was composited with PEO based Electrolyte by physical blending to resolve the above issues. The addition of cPTFBC can effectively enhance the mechanical strength at elevated temperature. In addition, the as-prepared PEO-cPTFBC based Electrolyte shows an enlarged electrochemical window up to 4.7 V at 60 °C and a high Li ion transference number (0.33). More importantly, the PEO-cPTFBC based all solid state Polymer Electrolyte presents excellent compatibility with lithium metal and improved LiCoO2/Li battery performance compared with PEO based Electrolyte. These outstanding performance of the cPTFBC based Electrolyte make it promising as solid Polymer Electrolyte for lithium metal batteries.
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a superior Polymer Electrolyte with rigid cyclic carbonate backbone for rechargeable lithium ion batteries
ACS Applied Materials & Interfaces, 2017Co-Authors: Jingchao Chai, Zhihong Liu, Jianjun Zhang, Xinhong Zhou, Kun Tang, Jinran Sun, Zeyi Tian, Guanglei CuiAbstract:The fabricating process of well-known Bellcore poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP)-based Polymer Electrolytes is very complicated, tedious, and expensive owing to containing a large amount of fluorine substituents. Herein, a novel kind of poly(vinylene carbonate) (PVCA)-based Polymer Electrolyte is developed via a facile in situ Polymerization method, which possesses the merits of good interfacial compatibility with electrodes. In addition, this Polymer Electrolyte presents a high ionic conductivity of 5.59 × 10–4 S cm–1 and a wide electrochemical stability window exceeding 4.8 V vs Li+/Li at ambient temperature. In addition, the rigid cyclic carbonate backbone of poly(vinylene carbonate) endows Polymer Electrolyte a superior mechanical property. The LiFe0.2Mn0.8PO4/graphite lithium ion batteries using this Polymer Electrolyte deliver good rate capability and excellent cyclability at room temperature. The superior performance demonstrates that the PVCA-based Electrolyte via in situ po...
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A Superior Polymer Electrolyte with Rigid Cyclic Carbonate Backbone for Rechargeable Lithium Ion Batteries
2017Co-Authors: Jingchao Chai, Zhihong Liu, Jianjun Zhang, Xinhong Zhou, Kun Tang, Jinran Sun, Zeyi Tian, Guanglei CuiAbstract:The fabricating process of well-known Bellcore poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP)-based Polymer Electrolytes is very complicated, tedious, and expensive owing to containing a large amount of fluorine substituents. Herein, a novel kind of poly(vinylene carbonate) (PVCA)-based Polymer Electrolyte is developed via a facile in situ Polymerization method, which possesses the merits of good interfacial compatibility with electrodes. In addition, this Polymer Electrolyte presents a high ionic conductivity of 5.59 × 10–4 S cm–1 and a wide electrochemical stability window exceeding 4.8 V vs Li+/Li at ambient temperature. In addition, the rigid cyclic carbonate backbone of poly(vinylene carbonate) endows Polymer Electrolyte a superior mechanical property. The LiFe0.2Mn0.8PO4/graphite lithium ion batteries using this Polymer Electrolyte deliver good rate capability and excellent cyclability at room temperature. The superior performance demonstrates that the PVCA-based Electrolyte via in situ Polymerization is a potential alternative Polymer Electrolyte for high-performance rechargeable lithium ion batteries
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a sustainable and rigid flexible coupling cellulose supported poly propylene carbonate Polymer Electrolyte towards 5 v high voltage lithium batteries
Electrochimica Acta, 2016Co-Authors: Zhihong Liu, Jianjun Zhang, Liping Yue, Jianghui Zhao, Xinhong Zhou, Bingsheng Qin, Xiaogang Wang, Guanglei CuiAbstract:Inspired by their higher energy density, high voltage lithium ion batteries (LIBs) have been given great attention recently. However, decomposition of traditional liquid Electrolyte hinders the development of high voltage LIBs. Herein, we explored a sustainable and rigid-flexible coupling cellulose-supported poly (propylene carbonate) (PPC) Polymer Electrolyte for LiNi0.5Mn1.5O4-based batteries. The incorporating of robust cellulose as skeleton effectively surmounts the drawback of poor mechanical integrity of the gel Polymer Electrolyte. It was demonstrated that the Polymer Electrolyte exhibited wider electrochemical window (up to 5.0 V), higher ion transference number (0.68) and higher ionic conductivity (1.14 mS cm(-1)) compared to liquid Electrolyte with commercial separator at 25 degrees C. Thus, 5 V high voltage batteries with this kind Polymer Electrolyte display excellent capacity retention and superior rate performance for at room temperature. The Above mentioned attracting characteristics would endow PPC-based Polymer Electrolyte a promising candidate for high energy density LIBs. (C) 2015 Elsevier Ltd. All rights reserved.
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A high-voltage poly(methylethyl α-cyanoacrylate) composite Polymer Electrolyte for 5 V lithium batteries
Journal of Materials Chemistry A, 2016Co-Authors: Jingchao Chai, Zhihong Liu, Jianjun Zhang, Liping Yue, Jianghui Zhao, Huijie Wen, Guanglei CuiAbstract:High-voltage lithium batteries have attracted increasing attention for large scale energy storage application in electric vehicles, smart grids and other electronic devices. However, a major bottleneck to achieve high-voltage lithium batteries is the anodic voltage stability of Electrolytes. Herein, we fabricate a composite Polymer Electrolyte, comprised of poly(methylethyl α-cyanoacrylate), nonwoven polytetrafluoroethylene and lithium bis(oxalate)borate salt. The composite Polymer Electrolyte presents a wide electrochemical window, which is explored to address the above-mentioned bottleneck. It is demonstrated that such a composite Polymer Electrolyte exhibits a higher ionic conductivity (1.24 mS cm−1 at 25 °C), better dimensional thermal resistance (150 °C) and higher ion transference number (0.63) compared to those of commercially available liquid Electrolytes with a polypropylene separator. In addition, LiNi0.5Mn1.5O4/Li batteries employing such a composite Polymer Electrolyte deliver excellent cycling performance and outstanding rate capability. So, it is demonstrated that the poly(methylethyl α-cyanoacrylate) based Polymer Electrolyte appears to be a promising candidate of high-voltage lithium battery Electrolyte towards next generation high energy density batteries.
Hong Chen - One of the best experts on this subject based on the ideXlab platform.
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dendrite free lithium deposition induced by mechanical strong sponge supported unique 3d cross linking Polymer Electrolyte for lithium metal batteries
Journal of Power Sources, 2019Co-Authors: Haiyang Liao, Han Chen, Fenglin Zhou, Zhanzhan Zhang, Hong ChenAbstract:Abstract The uncontrollable dendrite lithium growing is a hazardous behavior for lithium metal batteries, which is mainly cause for restraint of its commercial applications. Gel-based Polymer Electrolyte is emerging as a promising solution to achieving high ionic conductivity dendrite-free lithium deposition and good safety for developing high-performance all-solid-state rechargeable batteries. In this work, a new sponge-supported gel-based Polymer Electrolyte is developed by in-situ gelation of precursor solution-soaked (1,2-diacrylyl ethane, 2,4,6-triallyloxy-1,3,5-triazine and LiPF 6 Electrolyte) commercial sponge. In the sponge-supported Polymer Electrolyte, commercial sponge is served as the supporting framework to dissipate energy, enhancing mechanical strength of Polymer Electrolyte, while the cross-linked 1,2-diacrylyl ethane and 2,4,6-triallyloxy-1,3,5-triazine contained LiPF 6 Electrolyte endow fast ion transmitting for Polymer Electrolyte. The S-GPE with compact structure is conducive to be formation of a highly uniform and robust SEI layer on the lithium metal, thus resulting in remarkable lithium dendrite-resistance and electrochemical performances (ionic conductivity, interfacial resistance, charge/discharge, rate behavior, and long-term cyclic lifespan).
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structure and electrochemical properties of composite Polymer Electrolyte based on poly vinylidene fluoride hexafluoropropylene titania poly methyl methacrylate for lithium ion batteries
Journal of Power Sources, 2014Co-Authors: Li Wang, Mou Fang, Xiangming He, Jianjun Li, Lingfeng Deng, Jianlong Wang, Hong ChenAbstract:Abstract Titania–poly(methyl methacrylate) (PMMA) organic–inorganic hybrid material is synthesized via in situ Polymerization. The hybrid material is employed to prepare poly vinylidene fluoride–hexafluoropropylene (PVdF–HFP) composite Polymer Electrolyte. The effect of the hybrid material is investigated by SEM, TG-DSC, AC impedance and charge/discharge cycling tests. The results demonstrate that the inorganic–organic hybrid material as additive increases the porosity, pore size and Electrolyte uptake of the PVdF–HFP composite Polymer Electrolyte membrane, so that the ionic conductivity of the composite Polymer Electrolyte membrane is improved. The performance enhancement of the composite Polymer Electrolyte is confirmed by an electrochemical test using LiCoO2/Li cells in the voltage range of 2.75–4.4 V. This study shows that titania–PMMA hybrid material is a promising additive for PVDF–HFP composite Polymer Electrolyte for Li-ion batteries.
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interfacial compatibility of gel Polymer Electrolyte and electrode on performance of li ion battery
Electrochimica Acta, 2013Co-Authors: Li Wang, Mou Fang, Lingfeng Deng, Hong Chen, Jiang Cao, Yuming Shang, Juping YangAbstract:Abstract Interfacial compatibility of composite Polymer Electrolyte and electrode is the key factor to affect the performance of Polymer Li-ion batteries. In this work, liquid Electrolyte, pristine PVDF-HFP (poly(vinylidene fluoride-co-hexafluoropropylene)) gel Polymer Electrolyte (GPE) and nano-TiO2-poly(methyl methacrylate) (PMMA) hybrid doped PVDF-HFP composite Polymer Electrolyte (CPE) are used to investigate the interfacial compatibility between Electrolyte and electrode on performance of LiCoO2/Li cells. The electrochemical performances of cells are studied by charge/discharge tests and electrochemical impedance. The interfacial compatibility coefficient (λ) that related to the interface of Electrolyte and electrode is evaluated in terms of the fitting (i = e, sf, b and ct) with equivalent circuit and diffusion resistance (Rdiff). The results confirm that the C-rare performance of cells with GPE is more significantly associated with the interfacial compatibility than the ionic conductivity of GPE.
Liquan Chen - One of the best experts on this subject based on the ideXlab platform.
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safety reinforced poly propylene carbonate based all solid state Polymer Electrolyte for ambient temperature solid Polymer lithium batteries
Advanced Energy Materials, 2015Co-Authors: Jianjun Zhang, Zhihong Liu, Guanglei Cui, Jingchao Chai, Liping Yue, Jianghui Zhao, Xinhong Zhou, Qingfu Wang, Yuguo Guo, Liquan ChenAbstract:An integrated preparation of safety-reinforced poly(propylene carbonate)-based all-solid Polymer Electrolyte is shown to be applicable to ambient-temperature solid Polymer lithium batteries. In contrast to pristine poly(ethylene oxide) solid Polymer Electrolyte, this solid Polymer Electrolyte exhibits higher ionic conductivity, wider electrochemical window, better mechanical strength, and superior rate performance at 20 degrees C. Moreover, lithium iron phosphate/lithium cell using such solid Polymer Electrolyte can charge and discharge even at 120 degrees C. It is also noted that the solid-state soft-package lithium cells assembled with this solid Polymer Electrolyte can still power a red light-emitting diode lamp without suffering from internal short-circuit failures even after cutting off one part of the battery. Considering the aspects mentioned above, the solid Polymer Electrolyte is eligible for practical lithium battery applications with improved reliability and safety. Just as important, a new perspective that the degree of amorphous state of Polymer is also as critical as its low glass transition temperature for the exploration of room temperature solid Polymer Electrolyte is illustrated. In all, this study opens up a kind of new avenue that could be a milestone to the development of high-voltage and ambient-temperature all-solid-state Polymer Electrolytes.
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taichi inspired rigid flexible coupling cellulose supported solid Polymer Electrolyte for high performance lithium batteries
Scientific Reports, 2015Co-Authors: Jianjun Zhang, Guoliang Ding, Xinhong Zhou, Qingfu Wang, Pu Hu, Bo Zhang, Chuanjian Zhang, Liquan ChenAbstract:Inspired by Taichi, we proposed rigid-flexible coupling concept and herein developed a highly promising solid Polymer Electrolyte comprised of poly (ethylene oxide), poly (cyano acrylate), lithium bis(oxalate)borate and robust cellulose nonwoven. Our investigation revealed that this new class solid Polymer Electrolyte possessed comprehensive properties in high mechanical integrity strength, sufficient ionic conductivity (3 × 10−4 S cm−1) at 60°C and improved dimensional thermostability (up to 160°C). In addition, the lithium iron phosphate (LiFePO4)/lithium (Li) cell using such solid Polymer Electrolyte displayed superior rate capacity (up to 6 C) and stable cycle performance at 80°C. Furthermore, the LiFePO4/Li battery could also operate very well even at an elevated temperature of 160°C, thus improving enhanced safety performance of lithium batteries. The use of this solid Polymer Electrolyte mitigates the safety risk and widens the operation temperature range of lithium batteries. Thus, this fascinating study demonstrates a proof of concept of the use of rigid-flexible coupling solid Polymer Electrolyte toward practical lithium battery applications with improved reliability and safety.
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rigid flexible coupling high ionic conductivity Polymer Electrolyte for an enhanced performance of limn2o4 graphite battery at elevated temperature
ACS Applied Materials & Interfaces, 2015Co-Authors: Yulong Duan, Zhihong Liu, Jianjun Zhang, Guanglei Cui, Qingfu Wang, Bingsheng Qin, Liquan ChenAbstract:LiMn2O4-based batteries exhibit severe capacity fading during cycling or storage in LiPF6-based liquid Electrolytes, especially at elevated temperatures. Herein, a novel rigid–flexible gel Polymer Electrolyte is introduced to enhance the cyclability of LiMn2O4/graphite battery at elevated temperature. The Polymer Electrolyte consists of a robust natural cellulose skeletal incorporated with soft segment poly(ethyl α-cyanoacrylate). The introduction of the cellulose effectively overcomes the drawback of poor mechanical integrity of the gel Polymer Electrolyte. Density functional theory (DFT) calculation demonstrates that the poly(ethyl α-cyanoacrylate) matrices effectively dissociate the lithium salt to facilitate ionic transport and thus has a higher ionic conductivity at room temperature. Ionic conductivity of the gel Polymer Electrolyte is 3.3 × 10–3 S cm–1 at room temperature. The gel Polymer Electrolyte remarkably improves the cycling performance of LiMn2O4-based batteries, especially at elevated tempe...