Thin film graphite electrodes with low stress generation during Li-intercalation

被引：86

作者：

Mukhopadhyay, Amartya ^{[1
]}

Tokranov, Anton ^{[1
]}

Sena, Kevin ^{[1
]}

Xiao, Xingcheng ^{[2
]}

Sheldon, Brian W. ^{[1
]}

机构：

[1] Brown Univ, Sch Engn, Providence, RI 02912 USA

[2] Gen Motors Global R&D Ctr, Warren, MI 48090 USA

来源：

CARBON | 2011年 / 49卷 / 08期

基金：

美国国家科学基金会;

关键词：

LITHIUM-ION BATTERIES; CARBON MATERIALS; YOUNGS MODULUS; INSERTION; LITHIATION; ANODES;

D O I：

10.1016/j.carbon.2011.02.067

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：

We report here the development of thin film 'graphite' electrodes for Li-ion batteries, with near theoretical Li-intercalation/de-intercalation capacity (similar to 372 mAh/g). These films, synthesized by chemical vapor deposition at a relatively low temperature of 1000 degrees C, exhibit strong graphitic order with the basal planes oriented parallel to the Ni current collector. During galvanostatic cycling, in-situ stress measurements show that full lithiation corresponds to the development of only modest in-plane compressive stresses of similar to -250 MPa. These stresses are more than an order of magnitude lower than expected, which should promote long cycle life. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2742 / 2749

页数：8

共 30 条

[1]

Balluffi RW, 2005, KINETICS OF MATERIALS, P1

[2] Thin-film lithium and lithium-ion batteries [J].