Nanostructured nickel sulfide synthesized via a polyol route as a cathode material for the rechargeable lithium battery |
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| Institution: | 1. Institute for Superconducting and Electronic Materials, University of Wollongong, NSW 2522, Australia;2. School of Mechanical, Materials and Mechatronic Engineering, University of Wollongong, NSW 2522, Australia;3. ARC Center of Excellence for Electromaterials Science, University of Wollongong, NSW 2522, Australia;1. State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;2. Center of Electron Microscopy and School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China;3. Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Hangzhou 310027, China;4. Dynabat New Energy Science & Technology Co., Ltd., Zhaoan 363500, China;5. School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;1. Functional Nanomaterials Group, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, B-3001, Belgium;2. Department of Materials Engineering, Kasteelpark Arenberg 44, KU Leuven, B-3001, Belgium;1. MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001, Harbin, China;2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China |
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| Abstract: | Nanostructured nickel sulfide (NiS) was synthesized via a simple polyol route. The NiS powders were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and electrochemical testing. The results revealed that the cycle life of the annealed NiS sample was improved over that of the as-prepared sample. The electrochemical performance was also tested using 1 M lithium trifluoromethanesulfonimide (LiTFSI) in a solvent of poly(ethylene glycol) dimethyl ether (PEGDME) in order to compare with a sample tested in the conventional electrolyte of 1 M LiPF6 in a mixture of ethylene carbonate (EC) and dimethyl carbonate (DMC). The results showed that the electrochemical properties were improved by using the 1 M LiTFSI/PEGDME electrolyte. |
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