期刊
JOURNAL OF ENERGY CHEMISTRY
卷 65, 期 -, 页码 26-33出版社
ELSEVIER
DOI: 10.1016/j.jechem.2021.05.021
关键词
3D MoS2 foam; Carbon paper; Binder-free electrode; High performance; Sodium-ion batteries
资金
- National Key R&D Program of China [2016YFA0204100, 2016YFA0200200]
- National Natural Science Foundation of China [21890753, 21988101, 21905035]
- Danish company Haldor Topsoe A/S, Liaoning Revitalization Talents Program [XLYC1907093]
- Liaoning Natural Science Foundation [20180510043]
MoS2 with 3D macroporous foam structure and high conductivity obtained through SiO2 templates exhibits superior electrochemical performance in sodium-ion batteries, including high specific capacity and cycling stability.
Molybdenum sulfide (MoS2) with well-designed porous structure has the potential to be great electrode materials in sodium-ion batteries due to its high theoretical capacity and abundant resource, however, hindered by its intrinsic low conductivity and stability. Herein, MoS2 with 3D macroporous foam struc-ture and high conductivity was obtained through SiO2 templates and integrated with carbon paper (3D F-MoS2/CP). It has showed superior specific capacity (225 mA h g(-1), 0.4-3 V) and cycling stability (1000 cycles) at high rate (2000 mA g(-1)), with a low decay rate (0.033% per cycle) in sodium-ion batteries. The excellent electrochemical performance may originate from its unique integrated structure: 3D MoS2 macropores providing high surface area and abundant transfer channels while carbon paper enhancing the conductivity of MoS2 and avoiding unnecessary side reactions brought by binder addition. (c) 2021 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.
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