期刊
NANO LETTERS
卷 13, 期 9, 页码 4249-4256出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl401952h
关键词
Nanoparticles; lithium ion batteries; self-assembly; solid-electrolyte interphase; iron oxide; anodes
类别
资金
- Research Center Program of Institute for Basic Science (IBS) in Korea
Although different kinds of metal oxide nanoparticles continue to be proposed as anode materials for lithium ion batteries (LIBs), their cycle life and power density are still not suitable for commercial applications. Metal oxide nanoparticles have a large storage capacity, but they suffer from the excessive generation of solid electrolyte interphase (SEI) on the surface, low electrical conductivity, and mechanical degradation and pulverization resulted from severe volume expansion during cycling. Herein we present the preparation of mesoporous iron oxide nanoparticle clusters (MIONCs) by a bottom-up self-assembly approach and demonstrate that they exhibit excellent cyclic stability and rate capability derived from their three-dimensional mesoporous nanostructure. By controlling the geometric configuration, we can achieve stable interfaces between the electrolyte and active materials, resulting in SEI formation confined on the outer surface of the MIONCs.
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