期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 864, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.158379
关键词
Nb14Mo3O44; Nanoparticles; Solvothermal method; Anode; Lithium-ion batteries
资金
- NSFC [52002106, U16321611]
- University Natural Science Research Project of Anhui Province [KJ2019A0723]
- Natural Science Foundation of Anhui Province [1808085QE154, 1808085JQ13]
- Research Funds for Hefei Normal University [2019ylkc02, 2018jxtd03, 201914098201]
Niobium molybdenum oxide Nb14Mo3O44 nanoparticles are synthesized by a convenient solvothermal method and explored as new anodes for lithium-ion batteries. Compared with agglomerated microparticles obtained by solid-state reaction, Nb14Mo3O44 nanoparticles demonstrate higher initial coulombic efficiency, better cycle property, and improved rate capability.
The niobium molybdenum oxide Nb14Mo3O44 nanoparticles are synthesized by a convenient solvothermal method and explored as new anodes for lithium-ion batteries. Nb14Mo3O44, which belongs to tetragonal structure that consists of 4 x 4 x infinity NbO6 octahedra-blocks linked by MoO4 tetrahedra, generates stable structure for the efficient Li+ de/intercalation. Compared with the agglomerated microparticles obtained by solid-state reaction, Nb14Mo3O44 nanoparticles demonstrate a higher initial coulombic efficiency (90.6%), better cycle property (218 mAh g(-1) after 503 cycles at 0.5 C) and improved rate capability (74 mAh g(-1) at 20 C), benefiting from nanoparticles possessed rather high specific surface area and reaction reactivity. This work provides a current supplement for intercalation-type Nb-M-O compounds anodes. (C) 2021 Elsevier B.V. All rights reserved.
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