Highly Ordered Nanoporous Si for Negative Electrode of Rechargeable Lithium-Ion Battery

被引：16

作者：

Nishio, Kazuyuki ^{[1
,2
]}

Tagawa, Suguru ^{[1
]}

Fukushima, Tatsuro ^{[1
]}

Masuda, Hideki ^{[1
,2
]}

机构：

[1] Tokyo Metropolitan Univ, Dept Appl Chem, Hachioji, Tokyo 1920397, Japan

[2] Kanagawa Acad Sci & Technol, Sagamihara, Kanagawa 2291131, Japan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2012年 / 15卷 / 04期

关键词：

POROUS SILICON; ANODE MATERIAL; NANOSTRUCTURED SILICON; SECONDARY BATTERIES; STORAGE;

D O I：

10.1149/2.002204esl

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Highly ordered nanoporous Si was investigated as a rechargeable Li-ion battery anode. Hexagonally arranged nanoporous Si with a 200 nm hole interval was fabricated by direct nanoimprint and the subsequent galvanostatic etching in an aqueous HF solution. Hole size was controlled by changing current density, and larger holes (150 nm) showed higher anodic and cathodic charges during cyclic voltammetry. The use of nanoporous Si with large holes enabled galvanostatic cycling without the disintegration of nanoholes when charge capacity was set to 1400 mAhg(-1). In the cycling, coulombic efficiency gradually improved and reached 96% at the last 20th cycle. (C) 2012 The Electrochemical Society. [DOI:10.1149/2.002204esl] All rights reserved.

引用

页码：A41 / A44

页数：4

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