Structural Degradation of Cu Current Collector During Electrochemical Cycling of Sn-Based Lithium-Ion Batteries

Guo, Meiqing; Meng, Weijia; Zhang, Xiaogang; Bai, Zhongchao; Wang, Genwei; Wang, Zhihua; Yang, Fuqian

doi:10.1007/s11664-019-07549-0

Cited by 9 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The corrosion of the current collector has been widely investigated. [133][134][135][136] However, for quite a long time, researchers in both mechanical field and battery field did not pay enough attention to the fracture of the current collector.…”

Section: Fracture Of Current Collectormentioning

confidence: 99%

Review on electrode-level fracture in lithium-ion batteries*

Ning

Shi

et al. 2020

Chinese Phys. B

View full text Add to dashboard Cite

Fracture occurred in electrodes of the lithium-ion battery compromises the integrity of the electrode structure and would exert bad influence on the cell performance and cell safety. Mechanisms of the electrode-level fracture and how this fracture would affect the electrochemical performance of the battery are of great importance for comprehending and preventing its occurrence. Fracture occurring at the electrode level is complex, since it may involve fractures in or between different components of the electrode. In this review, three typical types of electrode-level fractures are discussed: the fracture of the active layer, the interfacial delamination, and the fracture of metallic foils (including the current collector and the lithium metal electrode). The crack in the active layer can serve as an effective indicator of degradation of the electrochemical performance. Interfacial delamination usually follows the fracture of the active layer and is detrimental to the cell capacity. Fracture of the current collector impacts cell safety directly. Experimental methods and modeling results of these three types of fractures are concluded. Reasonable explanations on how these electrode-level fractures affect the electrochemical performance are sorted out. Challenges and unsettled issues of investigating these fracture problems are brought up. It is noted that the state-of-the-art studies included in this review mainly focus on experimental observations and theoretical modeling of the typical mechanical damages. However, quantitative investigations on the relationship between the electrochemical performance and the electrode-level fracture are insufficient. To further understand fractures in a multi-scale and multi-physical way, advancing development of the cross discipline between mechanics and electrochemistry is badly needed.

show abstract

Section: Fracture Of Current Collectormentioning

confidence: 99%

Review on electrode-level fracture in lithium-ion batteries*

Ning

Shi

et al. 2020

Chinese Phys. B

View full text Add to dashboard Cite

show abstract

“…Recent work also reported that Cu foil current collectors for Sn-based anodes underwent structural degradation during cycling [83]. foam contributes to a coulombic efficiency higher than 90% at 1 mA cm −2 after 400 cycles.…”

Section: Cu Foilmentioning

confidence: 93%

A review of current collectors for lithium-ion batteries

Zhu

Gastol

Marshall

et al. 2021

Journal of Power Sources

266

147

View full text Add to dashboard Cite

“…All investigations have confirmed the importance of morphology roughness, mechanical properties, conductivity, and anti-corrosion characteristics of the current collector before cycling to the performance of LIBs. Meanwhile, in our previous work, we found that there exists the migration of Li, C, and O atoms towards the Cu current collector during electrochemical cycling [33], resulting in some changes of composition, structure, and conductivity of current collector. Also, Hyams et al [34] reported that the dissolved Al element exists in the electrolyte, and the amount of Al in the electrolyte increases with the number of cycles and the temperature, which confirmed the corrosion of Al during cycling.…”

Section: Introductionmentioning

confidence: 90%

The Effect of Structure and Mechanical Properties Change of Current Collector during Cycling on Sb-Based Lithium-Ion Batteries’ Performance

et al. 2023

Self Cite

View full text Add to dashboard Cite

Here, we investigate structure and mechanical change of Cu and Al current collector during cycling and analyze the contribution to capacity attenuation of Sb-based lithium-ion batteries (LIBs). There exists migration of C, Sb, and Li atoms to the inside of Cu current collector, and diffusion of Li, Co, and O atoms to the inside of Al current collector during cycling, which results in the formation of a porous film of Li2SbCu (with the thickness of 21 µm after 100 cycles) and a relatively dense film of Al2O3 (with the thickness of 23 µm after 100 cycles) on the surface of Cu and Al current collector, respectively. The formation of films results in a weak bond between active layer and current collector, and the increase of hardness of 0.84 GPa and modulus of 22.5 GPa for Cu current collector after 100 cycles, which is adverse to the charge capacity and cycling stability. Nevertheless, Al2O3 films caused hardness decrease of 0.53 GPa and modulus decrease of 18.93 GPa of Al current collector after 100 cycles, which contributes to the improvement of cycling stability and charge capacity. This study provides an understanding of the capacity loss of Sb-based LIBs from the perspective of structural degradation of current collectors.

show abstract

Structural Degradation of Cu Current Collector During Electrochemical Cycling of Sn-Based Lithium-Ion Batteries

Cited by 9 publications

References 23 publications

Review on electrode-level fracture in lithium-ion batteries*

Review on electrode-level fracture in lithium-ion batteries*

A review of current collectors for lithium-ion batteries

The Effect of Structure and Mechanical Properties Change of Current Collector during Cycling on Sb-Based Lithium-Ion Batteries’ Performance

Contact Info

Product

Resources

About