Facile fabrication of a nanoporous Si/Cu composite and its application as a high-performance anode in lithium-ion batteries

被引：79
作者：
Xu, Caixia [1 ]
Hao, Qin [1 ]
Zhao, Dianyun [1 ]
机构：
[1] Univ Jinan, Sch Chem & Chem Engn, Jinan 250022, Peoples R China
来源：
NANO RESEARCH | 2016年 / 9卷 / 04期
基金：
中国国家自然科学基金;
关键词：
porous; silicon; composite; lithium-ion batteries; dealloying; POROUS SILICON PARTICLES; MESOPOROUS SILICON; CU FOAM; STORAGE; GRAPHENE; NANOCOMPOSITE; NANOPARTICLES; NETWORKS; ARRAYS; ALLOY;
D O I：
10.1007/s12274-015-0973-x
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nanoporous (NP) Si/Cu composites are fabricated by means of alloy refining followed by facile electroless dealloying in mild conditions. NP-Si/Cu composites with a three-dimensional porous network nanoarchitecture with different Cu contents are obtained by changing the feeding ratio of alloy precursors. Owing to the rich porosity and integration of conductive Cu into a nanoporous Si backbone, the NP-Si85Cu15 composite exhibits modified conductivity and reduced volumetric expansion/fracture during repeated charging-discharging processes in lithium-ion batteries (LIBs), thus exhibiting much higher cycling reversibility than NP-Si92Cu8 and pure NP-Si. With the advantages of unique performance and easy preparation, NP-Si/Cu composite has potential for application as an advanced anode material for LIBs.
引用
收藏
页码：908 / 916
页数：9
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