期刊
APPLIED SURFACE SCIENCE
卷 436, 期 -, 页码 398-404出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2017.12.068
关键词
Silicon; Electrostatic self-assembly; 3D N-doped graphene; Lithium-ion batteries
类别
资金
- Taishan Scholars Talent Plan [ts201511080]
- National Natural Science Foundation of China (NSFC) [51672059]
We fabricate a novel 3D N-doped graphene/silicon composite for lithium-ion battery anodes, with Si nanoparticles uniformly dispersed and thoroughly embedded in the N-doped graphene matrix. The favorable structure of the composite results in a BET surface area and an average mesopore diameter of 189.2 m(2) g(-1) and 3.82 nm, respectively. The composite delivers reversible capacities as high as 1132 mA h g(-1) after 100 cycles under a current of 5 A g(-1) and 1017 mA h g(-1) after 200 cycles at 1 A g(-1), and exhibits an improved rate capability. The present approach shows promise for the preparation of other high-performance anode materials for lithium-ion batteries. (C) 2017 Elsevier B.V. All rights reserved.
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