Patterned Si thin film electrodes for enhancing structural stability

被引：14
|
作者：
Cho, Gyu-bong [1 ]
Noh, Jung-pil [1 ]
Sung, Ho-jin [1 ]
Lee, Sang-hun [1 ]
Im, Yeon-min [1 ]
Ahn, Hyo-jun [1 ]
Kim, Ki-won [1 ]
机构：
[1] Gyeongsang Natl Univ, Sch Mat Sci & Engn, Res Inst Green Energy Convergence Technol, Jinju 660701, Gyeongnam, South Korea
来源：
NANOSCALE RESEARCH LETTERS | 2012年 / 7卷
基金：
新加坡国家研究基金会;
关键词：
patterned electrode; silicon film; stress; anode; LI-ION BATTERIES; NEGATIVE ELECTRODE; AMORPHOUS-SILICON; ANODE; NI; DEPOSITION;
D O I：
10.1186/1556-276X-7-20
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A patterned film (electrode) with lozenge-shaped Si tiles could be successfully fabricated by masking with an expanded metal foil during film deposition. Its electrochemical properties and structural stability during the charge-discharge process were examined and compared with those of a continuous (conventional) film electrode. The patterned electrode exhibited a remarkably improved cycleability (75% capacity retention after 120 cycles) and an enhanced structural stability compared to the continuous electrode. The good electrochemical performance of the patterned electrode was attributed to the space between Si tiles that acted as a buffer against the volume change of the Si electrode.
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页数：5
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