A high-performance nanoporous Si/Al2O3 foam lithium-ion battery anode fabricated by selective chemical etching of the Al-Si alloy and subsequent thermal oxidation

被引：71

作者：

Hwang, Gaeun ^{[1
]}

Park, Hyungmin ^{[1
]}

Bok, Taesoo ^{[1
]}

Choi, Sinho ^{[1
]}

Lee, Sungjun ^{[1
]}

Hwang, Inchan ^{[1
]}

Choi, Nam-Soon ^{[1
]}

Seo, Kwanyong ^{[1
]}

Park, Soojin ^{[1
]}

机构：

[1] UNIST, Sch Energy & Chem Engn, Dept Energy Engn, Ulsan 689798, South Korea

来源：

CHEMICAL COMMUNICATIONS | 2015年 / 51卷 / 21期

关键词：

AMORPHOUS-SILICON; COATING LAYER; COATED SI; ALUMINUM; NANOWIRES; DIOXIDE;

D O I：

10.1039/c4cc09956g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanostructured micrometer-sized Al-Si particles are synthesized via a facile selective etching process of Al-Si alloy powder. Subsequent thin Al2O3 layers are introduced on the Si foam surface via a selective thermal wet oxidation process of etched Al-Si particles. The resulting Si/Al2O3 foam anodes exhibit outstanding cycling stability (a capacity retention of 78% after 300 cycles at the C/5 rate) and excellent rate capability.

引用

页码：4429 / 4432

页数：4

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