期刊
ELECTROCHIMICA ACTA
卷 354, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2020.136677
关键词
Aluminum ion battery; MoSe2; Nano piece; Aluminum intercalation
资金
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX19_2101]
- Natural Science Foundation of Shandong Province, China [ZR2017MEM019]
- Testing Center of Yangzhou University
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Rechargeable aluminum-ion batteries (AIBs), with high capacity, low cost and high security, are expected to be the next-generation energy storage devices. In this research, a sheet nanocomposite material MoSe2@C as positive electrode of AIBs is successfully synthesized by a simple hydrothermal method and following annealing treatment. In particular, the aluminum storage mechanism of MoSe2@C is studied by ex-situ XRD and XPS in detail. Specifically, capacity degradation is caused by irreversible MoSe2 phase change. Interestingly, no typical aluminum dendrites are produced on cycled aluminum sheet, and MoSe2 layer-structure is retained after 1000 cycles for its outer carbon protection. This AIBs delivers a high first discharge capacity of 294.97 mAh g(-1) at 100 mA g(-1) and remains 110.3 mAh g(-1) after 3000 cycles. The meaningful results represent a good potential application of MoSe2@C in AIBs. (C) 2020 Elsevier Ltd. All rights reserved.
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