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6 Al箔表面三维形貌图、表面缺陷示意图以及不同厚度Al箔缺陷尺寸和缺陷参数( $\sqrt[]{a r e a}$ )分布

Fig.6 3D topography, schematic of surface defect, and distributions of defect size and defect parameter ( $\sqrt[]{a r e a}$ ) for Al foils with different thicknesses
(a) 3D laser confocal image
(b) schematic of surface defect and the cross-sectional morphology along the AA' line
(c-f) distributions of defect size (c, d) and defect parameter (

\sqrt[]{a r e a}

) (e, f) of 10 μm (c, e) and 13 μm (d, f) Al, respectively (d_depth—defect depth, d_length—defect length, d_width—defect width)