The Experts below are selected from a list of 141708 Experts worldwide ranked by ideXlab platform
Guoxiu Wang - One of the best experts on this subject based on the ideXlab platform.
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promoting lithium polysulfide sulfide redox kinetics by the catalyzing of zinc sulfide for high performance lithium sulfur Battery
Nano Energy, 2018Co-Authors: W X Zhang, Guoxiu Wang, Hongbo Fan, Faliang Cheng, Guoxiu WangAbstract:Abstract Entrapping polysulfide from dissolution into electrolyte by strong chemisorption of polar materials has been widely reported in lithium-sulfur (Li-S) Battery. Here, for the first time, zinc sulfide (ZnS) was demonstrated as an activation catalyst in Li-S Battery to suppress the soluble polysulfide shuttle effect by powering kinetics redox reactions of lithium polysulfide/sulfide. Kinetic analyses comprehensively identify that ZnS not only facilities polysulfide redox kinetics in liquid phase (Li2S8→Li2S6→Li2S4), but also promotes the effective decompositions of lithium sulfide (Li2S). Furthermore, first-principle calculations confirm that the low lithium ion diffusion barrier on the surface of ZnS promotes the redox reaction between lithium ion and sulfur species; and the low migration energy barrier of polysulfide on its surface guarantees the fast diffussion of polysulfides from the ZnS surface to the nearby conductive substrate, thus effectively smoothes polysulfides’ entrapping-diffusion-conversion mechanism across the ZnS interface, resulting in the highly reversible electrochemical performance. As evidenced by the ex situ SEM and visible experiment, the reaction between migrated sulfur species and lithium anode was significantly alleviated, and the insulating Li2S/Li2S2 was uniformly deposited on the ZnS-CB/S cathode. This ZnS cathode based Li-S Battery exhibits outstanding performance including an excellent retained discharge specific capacity of 589 mA h gsul−1 with the high sulfur loading of 7 mg cm−2 (200 cycles) and extended cycling stability at the high current rate of 2 C, 5 C (632, 388 mA h gsul−1 after 1000 cycles).
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Electrochemical properties of all solid state Li/S Battery
Materials Research Bulletin, 2012Co-Authors: Ji-hyun Yu, Jin-woo Park, Qing Wang, Yongku Kang, Guoxiu WangAbstract:All-solid-state lithium/sulfur (Li/S) Battery is prepared using siloxane cross-linked network solid electrolyte at room temperature. The solid electrolytes show high ionic conductivity and good electrochemical stability with lithium and sulfur. In the first discharge curve, all-solid-state Li/S Battery shows three plateau potential regions of 2.4V, 2.12V and 2.00V, respectively. The Battery shows the first discharge capacity of 1044mAhg−1-sulfur at room temperature. This first discharge capacity rapidly decreases in 4th cycle and remains at 512mAhg−1-sulfur after 10 cycles.
Bruno Scrosati - One of the best experts on this subject based on the ideXlab platform.
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all solid state lithium sulfur Battery using a glass type p2s5 li2s electrolyte benefits on anode kinetics
Journal of The Electrochemical Society, 2015Co-Authors: Takanobu Yamada, Seitaro Ito, Ryo Omoda, Taku Watanabe, Yuichi Aihara, Marco Agostini, Ulderico Ulissi, Jusef Hassoun, Bruno ScrosatiAbstract:Lithium-sulfur (Li-S) batteries are promising candidates for next generation electrical energy storage devices due to their high specific energy. Despite intense research, there are still a number of technical challenges in developing a high performance Li-S Battery. To elucidate the issues, an all solid-state Li-S Battery was fabricated using Li3PS4 solid electrolyte. Most of the theoretical capacity of sulfur, 1600 mAhg−1 was attained in the initial discharge-charge cycles with a high coulombic efficiency approaching 99%. To verify the benefit of the solid state electrolyte, galvanostatic stripping-deposition tests were also carried out on a symmetrical Li/Li cell and compared with those of a liquid electrolyte (1 M- lithium bis(trifluoromethane sulfonyl) imide (LiTFSI) in a mixture of 1,3-dioxolane (DOL)-diethoxyethane (DEE)). The kinetics and thermodynamics of the solid-state cell are discussed from the viewpoint of the charge transfer processes. This study demonstrates both the merits and drawbacks of using the solid sulfide electrolyte in a Li-S Battery and facilitates the further improvement of this important high energy storage device.
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all solid state lithium sulfur Battery using a glass type p2s5 li2s electrolyte benefits on anode kinetics
Journal of The Electrochemical Society, 2015Co-Authors: Takanobu Yamada, Ryo Omoda, Taku Watanabe, Yuichi Aihara, Marco Agostini, Ulderico Ulissi, Jusef Hassoun, Bruno ScrosatiAbstract:Lithium-sulfur (Li-S) batteries are promising candidates for next generation electrical energy storage devices due to their high specific energy. Despite intense research, there are still a number of technical challenges in developing a high performance Li-S Battery. To elucidate the issues, an all solid-state Li-S Battery was fabricated using Li3PS4 solid electrolyte. Most of the theoretical capacity of sulfur, 1600 mAhg−1 was attained in the initial discharge-charge cycles with a high coulombic efficiency approaching 99%. To verify the benefit of the solid state electrolyte, galvanostatic stripping-deposition tests were also carried out on a symmetrical Li/Li cell and compared with those of a liquid electrolyte (1 Mlithium bis(trifluoromethane sulfonyl) imide (LiTFSI) in a mixture of 1,3-dioxolane (DOL)-diethoxyethane (DEE)). The kinetics and thermodynamics of the solid-state cell are discussed from the viewpoint of the charge transfer processes. This study demonstrates both the merits and drawbacks of using the solid sulfide electrolyte in a Li-S Battery and facilitates the further improvement of this important high energy storage device. © The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org. [DOI: 10.1149/2.0441504jes] All rights reserved.
Huiming Cheng - One of the best experts on this subject based on the ideXlab platform.
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more reliable lithium sulfur batteries status solutions and prospects
Advanced Materials, 2017Co-Authors: Ruopian Fang, Shiyong Zhao, Zhenhua Sun, Dawei Wang, Huiming ChengAbstract:Lithium-sulfur (Li-S) batteries have attracted tremendous interest because of their high theoretical energy density and cost effectiveness. The target of Li-S Battery research is to produce batteries with a high useful energy density that at least outperforms state-of-the-art lithium-ion batteries. However, due to an intrinsic gap between fundamental research and practical applications, the outstanding electrochemical results obtained in most Li-S Battery studies indeed correspond to low useful energy densities and are not really suitable for practical requirements. The Li-S Battery is a complex device and its useful energy density is determined by a number of design parameters, most of which are often ignored, leading to the failure to meet commercial requirements. The purpose of this review is to discuss how to pave the way for reliable Li-S batteries. First, the current research status of Li-S batteries is briefly reviewed based on statistical information obtained from literature. This includes an analysis of how the various parameters influence the useful energy density and a summary of existing problems in the current Li-S Battery research. Possible solutions and some concerns regarding the construction of reliable Li-S batteries are comprehensively discussed. Finally, insights are offered on the future directions and prospects in Li-S Battery field.
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a flexible sulfur graphene polypropylene separator integrated electrode for advanced li s batteries
Advanced Materials, 2015Co-Authors: Guangmi Zhou, Dawei Wang, Xuyi Sha, Songfeng Pei, Huiming ChengAbstract:A flexible Li-S Battery based on an integrated structure of sulfur and graphene on a separator is developed. The internal graphene current collector offers a continuous conductive pathway, a modified interface with sulfur, and a good barrier to and an effective reservoir for dissolved polysulfides, consequently improving the capacity and cyclic life of the Li-S Battery.
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A Flexible Sulfur‐Graphene‐Polypropylene Separator Integrated Electrode for Advanced Li–S Batteries
Advanced materials (Deerfield Beach Fla.), 2014Co-Authors: Guangmin Zhou, Dawei Wang, Songfeng Pei, Xu-yi Shan, Huiming ChengAbstract:A flexible Li-S Battery based on an integrated structure of sulfur and graphene on a separator is developed. The internal graphene current collector offers a continuous conductive pathway, a modified interface with sulfur, and a good barrier to and an effective reservoir for dissolved polysulfides, consequently improving the capacity and cyclic life of the Li-S Battery.
Takanobu Yamada - One of the best experts on this subject based on the ideXlab platform.
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all solid state lithium sulfur Battery using a glass type p2s5 li2s electrolyte benefits on anode kinetics
Journal of The Electrochemical Society, 2015Co-Authors: Takanobu Yamada, Seitaro Ito, Ryo Omoda, Taku Watanabe, Yuichi Aihara, Marco Agostini, Ulderico Ulissi, Jusef Hassoun, Bruno ScrosatiAbstract:Lithium-sulfur (Li-S) batteries are promising candidates for next generation electrical energy storage devices due to their high specific energy. Despite intense research, there are still a number of technical challenges in developing a high performance Li-S Battery. To elucidate the issues, an all solid-state Li-S Battery was fabricated using Li3PS4 solid electrolyte. Most of the theoretical capacity of sulfur, 1600 mAhg−1 was attained in the initial discharge-charge cycles with a high coulombic efficiency approaching 99%. To verify the benefit of the solid state electrolyte, galvanostatic stripping-deposition tests were also carried out on a symmetrical Li/Li cell and compared with those of a liquid electrolyte (1 M- lithium bis(trifluoromethane sulfonyl) imide (LiTFSI) in a mixture of 1,3-dioxolane (DOL)-diethoxyethane (DEE)). The kinetics and thermodynamics of the solid-state cell are discussed from the viewpoint of the charge transfer processes. This study demonstrates both the merits and drawbacks of using the solid sulfide electrolyte in a Li-S Battery and facilitates the further improvement of this important high energy storage device.
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all solid state lithium sulfur Battery using a glass type p2s5 li2s electrolyte benefits on anode kinetics
Journal of The Electrochemical Society, 2015Co-Authors: Takanobu Yamada, Ryo Omoda, Taku Watanabe, Yuichi Aihara, Marco Agostini, Ulderico Ulissi, Jusef Hassoun, Bruno ScrosatiAbstract:Lithium-sulfur (Li-S) batteries are promising candidates for next generation electrical energy storage devices due to their high specific energy. Despite intense research, there are still a number of technical challenges in developing a high performance Li-S Battery. To elucidate the issues, an all solid-state Li-S Battery was fabricated using Li3PS4 solid electrolyte. Most of the theoretical capacity of sulfur, 1600 mAhg−1 was attained in the initial discharge-charge cycles with a high coulombic efficiency approaching 99%. To verify the benefit of the solid state electrolyte, galvanostatic stripping-deposition tests were also carried out on a symmetrical Li/Li cell and compared with those of a liquid electrolyte (1 Mlithium bis(trifluoromethane sulfonyl) imide (LiTFSI) in a mixture of 1,3-dioxolane (DOL)-diethoxyethane (DEE)). The kinetics and thermodynamics of the solid-state cell are discussed from the viewpoint of the charge transfer processes. This study demonstrates both the merits and drawbacks of using the solid sulfide electrolyte in a Li-S Battery and facilitates the further improvement of this important high energy storage device. © The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org. [DOI: 10.1149/2.0441504jes] All rights reserved.
Ryo Omoda - One of the best experts on this subject based on the ideXlab platform.
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all solid state lithium sulfur Battery using a glass type p2s5 li2s electrolyte benefits on anode kinetics
Journal of The Electrochemical Society, 2015Co-Authors: Takanobu Yamada, Seitaro Ito, Ryo Omoda, Taku Watanabe, Yuichi Aihara, Marco Agostini, Ulderico Ulissi, Jusef Hassoun, Bruno ScrosatiAbstract:Lithium-sulfur (Li-S) batteries are promising candidates for next generation electrical energy storage devices due to their high specific energy. Despite intense research, there are still a number of technical challenges in developing a high performance Li-S Battery. To elucidate the issues, an all solid-state Li-S Battery was fabricated using Li3PS4 solid electrolyte. Most of the theoretical capacity of sulfur, 1600 mAhg−1 was attained in the initial discharge-charge cycles with a high coulombic efficiency approaching 99%. To verify the benefit of the solid state electrolyte, galvanostatic stripping-deposition tests were also carried out on a symmetrical Li/Li cell and compared with those of a liquid electrolyte (1 M- lithium bis(trifluoromethane sulfonyl) imide (LiTFSI) in a mixture of 1,3-dioxolane (DOL)-diethoxyethane (DEE)). The kinetics and thermodynamics of the solid-state cell are discussed from the viewpoint of the charge transfer processes. This study demonstrates both the merits and drawbacks of using the solid sulfide electrolyte in a Li-S Battery and facilitates the further improvement of this important high energy storage device.
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all solid state lithium sulfur Battery using a glass type p2s5 li2s electrolyte benefits on anode kinetics
Journal of The Electrochemical Society, 2015Co-Authors: Takanobu Yamada, Ryo Omoda, Taku Watanabe, Yuichi Aihara, Marco Agostini, Ulderico Ulissi, Jusef Hassoun, Bruno ScrosatiAbstract:Lithium-sulfur (Li-S) batteries are promising candidates for next generation electrical energy storage devices due to their high specific energy. Despite intense research, there are still a number of technical challenges in developing a high performance Li-S Battery. To elucidate the issues, an all solid-state Li-S Battery was fabricated using Li3PS4 solid electrolyte. Most of the theoretical capacity of sulfur, 1600 mAhg−1 was attained in the initial discharge-charge cycles with a high coulombic efficiency approaching 99%. To verify the benefit of the solid state electrolyte, galvanostatic stripping-deposition tests were also carried out on a symmetrical Li/Li cell and compared with those of a liquid electrolyte (1 Mlithium bis(trifluoromethane sulfonyl) imide (LiTFSI) in a mixture of 1,3-dioxolane (DOL)-diethoxyethane (DEE)). The kinetics and thermodynamics of the solid-state cell are discussed from the viewpoint of the charge transfer processes. This study demonstrates both the merits and drawbacks of using the solid sulfide electrolyte in a Li-S Battery and facilitates the further improvement of this important high energy storage device. © The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives 4.0 License (CC BY-NC-ND, http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reuse, distribution, and reproduction in any medium, provided the original work is not changed in any way and is properly cited. For permission for commercial reuse, please email: oa@electrochem.org. [DOI: 10.1149/2.0441504jes] All rights reserved.