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Xiong Wen David Lou - One of the best experts on this subject based on the ideXlab platform.
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recent advances on mixed Metal Sulfides for advanced sodium ion batteries
Advanced Materials, 2020Co-Authors: Yongjin Fang, Deyan Luan, Xiong Wen David LouAbstract:Sodium-ion batteries (SIBs) have drawn enormous attention in the past few years from both academic and industrial battery communities in view of the fascinating advantages of rich abundance and low cost of sodium resources. Among various electrode materials, mixed Metal Sulfides (MMSs) stand out as promising negative electrode materials for SIBs considering their superior structural and compositional advantages, such as decent electrochemical reversibility, high electronic conductivity, and rich redox reactions. Here, a summary of some recent developments in the rational design and synthesis of various kinds of MMSs with tailorable architectures, structural/compositional complexity, controllable morphologies, and enhanced electrochemical properties is presented. The effect of structural engineering and compositional design of MMSs on the sodium storage properties is highlighted. It is anticipated that further innovative works on the material design of advanced electrodes for batteries can be inspired.
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mixed Metal Sulfides for electrochemical energy storage and conversion
Advanced Energy Materials, 2018Co-Authors: Xiong Wen David LouAbstract:Mixed Metal Sulfides (MMSs) have attracted increased attention as promising electrode materials for electrochemical energy storage and conversion systems including lithium-ion batteries (LIBs), sodium-ion batteries (SIBs), hybrid supercapacitors (HSCs), Metal–air batteries (MABs), and water splitting. Compared with monoMetal Sulfides, MMSs exhibit greatly enhanced electrochemical performance, which is largely originated from their higher electronic conductivity and richer redox reactions. In this review, recent progresses in the rational design and synthesis of diverse MMS-based micro/nanostructures with controlled morphologies, sizes, and compositions for LIBs, SIBs, HSCs, MABs, and water splitting are summarized. In particular, nanostructuring, synthesis of nanocomposites with carbonaceous materials and fabrication of 3D MMS-based electrodes are demonstrated to be three effective approaches for improving the electrochemical performance of MMS-based electrode materials. Furthermore, some potential challenges as well as prospects are discussed to further advance the development of MMS-based electrode materials for next-generation electrochemical energy storage and conversion systems.
Yitai Qian - One of the best experts on this subject based on the ideXlab platform.
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solid solution anion enhanced electrochemical performances of Metal Sulfides selenides for sodium ion capacitors the case of fes2 xsex
ACS Applied Materials & Interfaces, 2018Co-Authors: Yaqiong Long, Jing Yang, Xin Gao, Weiliu Fan, Jian Yang, Shifeng Hou, Yitai QianAbstract:Transition-Metal Sulfides/selenides are explored as advanced electrode materials for nonaqueous sodium-ion capacitors, using FeS2–xSex as an example. A solid solution of S/Se in FeS2–xSex allows it to combine the high capacity of FeS2 and the good diffusion kinetics of FeSe2 together, thereby exhibiting excellent cycle stability (∼220 mA h g–1 after 6000 cycles at 2 A g–1) and superior rate capability (∼210 mA h g–1 at 40 A g–1) within 0.8–3.0 V. These results are much better than those of FeS2 and FeSe2, confirming the advantages of S/Se solid solution, as supported by EIS spectra, DFT calculations, and electronic conductivity. As FeS2–xSex is paired with the activated carbon (AC) as Na-ion capacitors, this device is also better than sodium-ion batteries of FeS2–xSex//Na3V2(PO4)3 and sodium-ion capacitors of Metal oxides//AC, particularly at high rates. These results open a new door for the applications of Sulfides/selenides in another device of electrochemical energy storage.
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microwave assisted synthesis of Metal Sulfides in ethylene glycol
Materials Chemistry and Physics, 2003Co-Authors: Di Chen, Kaibin Tang, Guozhen Shen, Jie Sheng, Zhen Fang, Xianming Liu, Huagui Zheng, Yitai QianAbstract:Abstract Metal Sulfides MS (M=Cd, Zn, Co, Pb, Cu), M 2 S 3 (M=Bi, Sb), M 2 S (M=Ag) were successfully synthesized through a one-step reaction between Metal salts and thiourea in ethylene glycol (EG) under the microwave irradiation. The products were characterized by powder X-ray diffraction (XRD), X-ray photoelectron spectroscope (XPS), transmission electron microscope (TEM) and electron diffraction (ED).
Yongming Chai - One of the best experts on this subject based on the ideXlab platform.
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ternary Metal Sulfides moconis derived from Metal organic frameworks for efficient oxygen evolution
International Journal of Hydrogen Energy, 2020Co-Authors: Junfeng Qin, Min Yang, Tianshu Chen, Bin Dong, Sa Hou, Yanan Zhou, Xinlei Yang, Jun Nan, Yongming ChaiAbstract:Abstract Developing a highly active and low-cost non-precious Metal electrocatalyst for oxygen evolution has been urgent for the clean energy system. Herein, the ternary Metal Sulfides MoCoNiS supported on nickel foam (MoCoNiS/NF) are successfully prepared using Mo doping Co-based Metal-organic framework (Co-MOF) as precursor, which may be helpful for the good dispersion of different Metal element. The uniform elements distribution of Mo, Co and Ni on MoCoNiS/NF is determined by all kinds of physical characterization. Mo doping may regulate the electronic environment around Co and Ni, suggesting the potential synergistic effects between different heteroatoms. Electrochemical test shows that MoCoNiS/NF exhibits the excellent OER activity than other single Metal or binary Metal Sulfides as comparison samples, needing only 151 and 226 mV overpotential to achieve current density of 10 (η10 = 151 mV) and 100 mA cm−2 (η100 = 226 mV), respectively. The excellent stability of MoCoNiS/NF has been achieved. The remarkable OER performance of MoCoNiS/NF may due to the synergistic effects and good electrical conductivity as well as the three-dimensional structure of NF as substrate. Therefore, the rational design of MOF derived multi transition Metal-based electrocatalysts will be an effective way for increasing OER performance.
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tuning the morphology and fe ni ratio of a biMetallic fe ni s film supported on nickel foam for optimized electrolytic water splitting
Journal of Colloid and Interface Science, 2018Co-Authors: Xiao Shang, Junfeng Qin, Bin Dong, Yongming Chai, Zizhang Liu, Jiahui Lin, Jingqi Chi, Lei Wang, Chenguang LiuAbstract:Abstract The surface composite and morphology of binary Metal Sulfides are the key for efficient overall water splitting. However, tuning the morphology and surface composition of binary Metal Sulfides in a facile way is still a challenge. Herein, binary Fe-Ni Sulfides supported on nickel foam (FeNi-S/NF) with different morphology and composition ratio of Fe/Ni have been synthesized through a facile one-step electrodeposition assisted by liquid crystal template (LCT). The binary FeNi-S has improved activity and conductivity compared to single Metal Sulfides. LCT-assisted porous FeNi-S film composed of uniform nanospheres is obviously different from planar film electrodeposited in water solution. LCT-assisted FeNi-S nanospheres are covered by many interwoven nanosheets, implying more exposed active sites for water splitting. Furthermore, the different Fe/Ni ratios of FeNi-S/NF samples have been systematically studied to explore the influence of Fe-incorporation on intrinsic activity of FeNi-S/NF. And the sample with Fe/Ni ratio (3/1) demonstrates the best activity and excellent stability for overall water electrolysis. Therefore, our work provides a facile and controllable access to binary Metal Sulfides with excellent performances for overall water splitting.
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triple ni co mo Metal Sulfides with one dimensional and hierarchical nanostructures towards highly efficient hydrogen evolution reaction
Journal of Catalysis, 2018Co-Authors: Zizhang Liu, Bin Dong, Xiao Shang, Yongming ChaiAbstract:Abstract Designing multi-transition Metal-based Sulfides holds promising in alkaline water electrolysis, whereas selecting proper candidates and facile building strategy remain challengeable. Herein, based on previous theory of combining 3d-transition Metal (NiCo) with non-3d-transition Metal (Mo) to lower hydrogen-adsorption energy barriers, we develop an indirect access to NiCoMo Sulfides supported by nickel foam (CoMoO-S/NF) with one dimensional (1 D) and hierarchical nanostructures. In the first step, the Metal oxides as precursor frameworks are designed as one-dimensional (1 D) nanostructures comprising interwoven nanosheets. The unique structure not only provides the large surface areas for exposing abundant active sites, but also improves the contact between catalyst/interface and facilitates the mass or charge transportation. Besides, the ternary Metals are supposed to generate synergistic effect to boost hydrogen evolution reaction (HER) properties of CoMoO-S/NF via sulfurization in the second step. Furthermore, CoMoO-S/NF demonstrates high electrocatalytic performances with structural stability in long-term HER process. Therefore, the two-step building of ternary transition Metal Sulfides may be provide applications for various transition Metal materials with unique architecture and high efficiency in alkaline HER.
Meilin Liu - One of the best experts on this subject based on the ideXlab platform.
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recent progress in the design of Metal Sulfides as anode materials for sodium ion batteries
Energy Storage Materials, 2019Co-Authors: Yanzhen Liu, Chenghao Yang, Qinyuan Zhang, Meilin LiuAbstract:Abstract Sodium ion batteries (SIBs) have been identified as promising potential alternatives for lithium ion batteries (LIBs) to satisfy the heavy demand for clean and renewable energy due to the rapid development of various electronics and electric vehicles. However, the lack of suitable anode materials is one of the major barriers for the large-scale usage of SIBs. Among all the anode materials for SIBs, Metal Sulfides (MSx) have attracted great attentions in recent years owing to their high theoretical capacity and abundance in environmentally friendly natural resources. Nonetheless, there exist obstructions to entirely express the capabilities of MSx resulting from large volume change, inherent low electrical conductivity, and sluggish kinetics for sodium ions diffusion into the bulk phase. Compositing, reducing crystallite size, and nanostructuring have been recognized as effective strategies to improve the performance of MSx. Herein, recent progress of MSx in SIBs is summarized based on the each group of Periodic Table to provide a clear understanding in relation to previous studies. The Metal Sulfides structure, their electrochemical performances, and reaction mechanisms within the SIBs are introduced in detail. It is hoped that an overview for achievements can be presented and a perspective for future development of MSx in SIBs can be given.
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general synthesis of dual carbon confined Metal Sulfides quantum dots toward high performance anodes for sodium ion batteries
Advanced Functional Materials, 2017Co-Authors: Ziliang Chen, Meilin Liu, Hao Wang, Yanhui Guo, Yun Song, Fang Fang, Dalin SunAbstract:Sponge-like composites assembled by cobalt Sulfides quantum dots (Co9S8 QD), mesoporous hollow carbon polyhedral (HCP) matrix, and a reduced graphene oxide (rGO) wrapping sheets are synthesized by a simultaneous thermal reduction, carbonization, and sulfidation of zeolitic imidazolate frameworks@GO precursors. Specifically, Co9S8 QD with size less than 4 nm are homogenously embedded within HCP matrix, which is encapsulated in macroporous rGO, thereby leading to the double carbon-confined hierarchical composites with strong coupling effect. Experimental data combined with density functional theory calculations reveal that the presence of coupled rGO not only prevents the aggregation and excessive growth of particles, but also expands the lattice parameters of Co9S8 crystals, enhancing the reactivity for sodium storage. Benefiting from the hierarchical porosity, conductive network, structural integrity, and a synergistic effect of the components, the sponge-like composites used as binder-free anodes manifest outstanding sodium-storage performance in terms of excellent stable capacity (628 mAh g−1 after 500 cycles at 300 mA g−1) and exceptional rate capability (529, 448, and 330 mAh g−1 at 1600, 3200, and 6400 mA g−1). More importantly, the synthetic method is very versatile and can be easily extended to fabricate other transition-Metal-Sulfides-based sponge-like composites with excellent electrochemical performances.
Yueying Peng - One of the best experts on this subject based on the ideXlab platform.
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The application of nanostructured transition Metal Sulfides as anodes for lithium ion batteries
Journal of Energy Chemistry, 2018Co-Authors: Jinbao Zhao, Yiyong Zhang, Yunhui Wang, He Li, Yueying PengAbstract:Abstract With wide application of electric vehicles and large-scale in energy storage systems, the requirement of secondary batteries with higher power density and better safety gets urgent. Owing to the merits of high theoretical capacity, relatively low cost and suitable discharge voltage, much attention has been paid to the transition Metal Sulfides. Recently, a large amount of research papers have reported about the application of transition Metal Sulfides in lithium ion batteries. However, the practical application of transition Metal Sulfides is still impeded by their fast capacity fading and poor rate performance. More well-focused researches should be operated towards the commercialization of transition Metal Sulfides in lithium ion batteries. In this review, recent development of using transition Metal Sulfides such as copper Sulfides, molybdenum Sulfides, cobalt Sulfides, and iron Sulfides as electrode materials for lithium ion batteries is presented. In addition, the electrochemical reaction mechanisms and synthetic strategy of transition Metal Sulfides are briefly summarized. The critical issues, challenges, and perspectives providing a further understanding of the associated electrochemical processes are also discussed.