Measurements of fracture properties of MWCNTs modified LiNi0.5Mn0.3Co0.2O2 electrodes by a modified shear lag model
Measurements of fracture properties of MWCNTs modified LiNi0.5Mn0.3Co0.2O2 electrodes by a modified shear lag model
复制标题
通过改进的剪切滞后模型测量多壁碳纳米管改性的LiNi0.5Mn0.3Co0.2O2电极的断裂性能
DOI：
10.1016/j.msea.2020.139223
复制
发表时间：
2020-04
期刊：
影响因子：
6.4
通讯作者：
Fang Daining
中科院分区：
文献类型：
--
作者：
Mao Weiguo;Zhu Xiaoxue;Zhang Zhouqing;Huang Huiyu;Dai Cuiying;Pan Junan;Pan Yong;Chen Xi;Fang Daining
采用刮涂法制备了多壁碳纳米管（MWCNTs）修饰的LiNi0. 5Mn0. 3Co0. 2O2（NMC 532）电极。利用扫描电镜观察了相应的微观形貌，并对不同MWCNTs含量的电极进行了阻抗谱和循环性能测试。借助于数字图像相关技术对电极的拉伸断裂进行了测量。对活性层表面裂纹的形核和扩展进行了原位监测。提出了一种改进的剪切滞后模型，分析了拉伸过程中活性层的断裂强度、断裂能和断裂韧性。讨论了MWCNTs对双层NMC 532电极拉伸破坏机制的影响。该方法可用于评价锂离子电池中其他先进活性层的力学性能。
The multi-walled carbon nanotubes (MWCNTs) modified LiNi0.5Mn0.3Co0.2O2(NMC532) electrodes were prepared by using blade-coated method. The corresponding microstructure morphology were observed by scanning microscopy electron. The impedance spectroscopy and cycle performances of the electrodes with different MWCNTs contents were measured and discussed. Tensile fracture measurements of the electrodes were performed with the aid of digital image correlation technique. The cracking nucleation and propagation on the active layer surface were in situ monitored. A modified shear lag model was developed to analyze the fracture strength, fracture energy and fracture toughness of the active layer during tensions. The effect of MWCNTs on tensile failure mechanisms of two-layered NMC532 electrodes was discussed. The proposed method is useful for appraising the mechanical properties of other advanced active layers in lithium ion batteries.
登录
查看更多内容
基于数字图像相关性的不同温度下弯曲试验对独立式 (Gd0.9Yb0.1)(2)Zr2O7 涂层力学行为的原位表征
影响因子：
5.7
作者：
Mao Weiguo;Wang Yujie;Huang Huiyu;Zeng Li;Wang Yuncheng;Lv Liang;Feng Biao;Zou Chen;Dai Cuiying;Tang Qizhong;Fang Daining
通讯作者：
Fang Daining
影响因子：
9.4
作者：
G. G. Santos-G.;F. Serbena;V. Fokin;Edgar Dutra Zanotto
通讯作者：
G. G. Santos-G.;F. Serbena;V. Fokin;Edgar Dutra Zanotto
在充电/放电过程中，锂离子电池中硅阳极反应的原位扫描电子显微镜。
影响因子：
4.6
作者：
Chen CY;Sano T;Tsuda T;Ui K;Oshima Y;Yamagata M;Ishikawa M;Haruta M;Doi T;Inaba M;Kuwabata S
通讯作者：
Kuwabata S
影响因子：
37.4
作者：
Sulin Zhang;K. Zhao;T. Zhu;Ju Li
通讯作者：
Sulin Zhang;K. Zhao;T. Zhu;Ju Li
影响因子：
9.2
作者：
Sethuraman, Vijay A.;Chon, Michael J.;Guduru, Pradeep R.
通讯作者：
Guduru, Pradeep R.