High-Performance Silicon-Rich Microparticle Anodes for Lithium-Ion Batteries Enabled by Internal Stress Mitigation

被引：0

作者：

Yao Gao

Lei Fan

Rui Zhou

Xiaoqiong Du

Zengbao Jiao

Biao Zhang

机构：

[1] The Hong Kong Polytechnic University,Department of Applied Physics

[2] The Hong Kong Polytechnic University,Department of Mechanical Engineering

[3] The Chinese University of Hong Kong,Department of Physics

来源：

Nano-Micro Letters | 2023年 / 15卷

关键词：

Silicon anodes; Silicon microparticles; Lithium-ion batteries; Internal stress;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The Sn and Sb incorporation boosts the electronic conductivity and lithium diffusivity of Si anodes, thereby reducing the stress due to lithium concentration gradient.The lithiation of modified electrode mimics isotropic solid solution reaction, rather than the original anisotropic two-phase reaction of Si, effectively weakening the stress concentration.The silicon-rich particles exhibit a capacity of over 1.9 Ah g−1 after 100 cycles at 0.1 A g−1 and maintain the excellent cyclic stability at 3 A g−1.

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