锂离子电池用微米厚度超薄集流体<strong>Cu</strong>箔和<strong>Al</strong>箔疲劳强度及损伤行为

锂离子电池用微米厚度超薄集流体Cu箔和Al箔疲劳强度及损伤行为

程福来, 罗雪梅, 胡炳利, 张滨, 张广平

Fatigue Strength and Damage Behavior of Micron-Thick Ultrathin Current Collector Cu Foil and Al Foil for Lithium-Ion Battery

CHENG Fulai, LUO Xuemei, HU Bingli, ZHANG Bin, ZHANG Guangping

图8 有利于Cu箔疲劳裂纹萌生的晶粒特点

Fig.8 Grain configurations favoring fatigue crack initiation for Cu foils
(a) grain size, maximum Schmid factor (Ω_max), and normalized elastic modulus difference of the twin and parent grain pairs which present crack initiation and no crack initiation
(b) grain size (D) and Ω_max of the twin and parent grain pairs which present crack initiation and no crack initiation