((WFRF:(Liu Xiao Qing)))
Sökning: ((WFRF:(Liu Xiao Qing))) > (2020-2024) > Electrochemical Lit...
Electrochemical Lithium Storage Performance of Molten Salt Derived V2SnC MAX Phase
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- Li, Youbing (författare)
- Chinese Acad Sci, Peoples R China; Qianwan Inst CNiTECH, Peoples R China
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- Ma, Guoliang (författare)
- Sichuan Univ, Peoples R China
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- Shao, Hui (författare)
- Univ Toulouse III Paul Sabatier, France
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- 2021-07-22
- 2021
- Engelska.
- Ingår i: Nano-Micro Letters. - : Springer. - 2311-6706 .- 2150-5551. ; 13:1
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- MAX phases are gaining attention as precursors of two-dimensional MXenes that are intensively pursued in applications for electrochemical energy storage. Here, we report the preparation of V2SnC MAX phase by the molten salt method. V2SnC is investigated as a lithium storage anode, showing a high gravimetric capacity of 490 mAh g(-1) and volumetric capacity of 570 mAh cm(-3) as well as superior rate performance of 95 mAh g(-1) (110 mAh cm(-3)) at 50 C, surpassing the ever-reported performance of MAX phase anodes. Supported by operando X-ray diffraction and density functional theory, a charge storage mechanism with dual redox reaction is proposed with a Sn-Li (de)alloying reaction that occurs at the edge sites of V2SnC particles where Sn atoms are exposed to the electrolyte followed by a redox reaction that occurs at V2C layers with Li. This study offers promise of using MAX phases with M-site and A-site elements that are redox active as high-rate lithium storage materials.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Nyckelord
- MAX phase; Molten salt; Lithium storage; High-rate; Energy storage
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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- Li, Youbing
- Ma, Guoliang
- Shao, Hui
- Xiao, Peng
- Lu, Jun
- Xu, Jin
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- Hou, Jinrong
- Chen, Ke
- Zhang, Xiao
- Li, Mian
- Persson, Per O A
- Hultman, Lars
- Eklund, Per
- Du, Shiyu
- Chai, Zhifang
- Huang, Zhengren
- Jin, Na
- Ma, Jiwei
- Liu, Ying
- Lin, Zifeng
- Huang, Qing
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- NATURVETENSKAP
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