Study on the effect of intrinsic electrical performance for Li-ion batteries

被引：10

作者：

Yue, Zhihao ^{[1
]}

Zhou, Lang ^{[1
]}

Jin, Chenxin ^{[1
]}

Liu, Liekai ^{[1
]}

Xu, Guojun ^{[1
]}

Tang, Hao ^{[1
]}

Huang, Haibin ^{[1
]}

Yuan, Jiren ^{[1
]}

Gao, Chao ^{[1
]}

机构：

[1] Nanchang Univ, Inst Photovolta, Nanchang 330031, Peoples R China

来源：

MATERIALS LETTERS | 2017年 / 186卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Electrical properties; Electronic materials; Energy storage and conversion; Functional; LITHIUM; COMPOSITE; ANODE;

D O I：

10.1016/j.matlet.2016.09.123

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, broken silicon (Si) wafers with electrical resistivity of 1 Omega cm, 0.1 Omega cm and 0.01 Omega cm and 0.001 Omega cm were ball-milled to form Si powders for being used as anode materials for Lithium ion batteries (LIBs). As a result, in relation to other three Si wafers, 0.001 Omega cm-Si-wafer presents the highest first discharge and charge capacity, which is 543.4 naAhg(-1) and 457.7 mAhg(-1) (Si: Carbon=5: 95, weight ratio), respectively. Besides, Si wafer with lower electrical resistivity was found to have better electrochemical properties, including higher charge and discharge capacities at different current densities and lower impedance. In addition, 0.001 nem-Si-wafer shows 65.5 mAhg(-1) (1310 mAhg(-1) from Si materials after calculation) higher in charge capacity than that of 1 Omega cm-Si-wafer. Results obtained in this study are good for the selection of Si raw materials for LIBs.

引用

页码：217 / 219

页数：3

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