Engineering and Technology

Passivation and corrosion of Al current collectors in lithium-ion batteries

P. Du, J. Wan, et al.

This research, conducted by Pin Du, Jiale Wan, Jiakang Qu, Hongwei Xie, Dihua Wang, and Huayi Yin, explores critical issues surrounding the passivation and corrosion of aluminum current collectors in lithium-ion batteries, revealing insights that could reshape our understanding of electrode performance in energy storage devices.

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Abstract

This research paper investigates the passivation, breakdown, and corrosion of aluminum (Al) current collectors in lithium-ion batteries (LIBs), focusing on their impact on battery performance. The study reveals that a passivation layer forms on the Al surface, but this layer breaks down under high charging voltages, leading to localized corrosion and capacity fade exceeding 20%. Ethylene carbonate adsorption is identified as a key factor in passivity breakdown. The findings provide a benchmark for understanding electrode corrosion in other advanced energy storage materials.

Publisher

npj | materials degradation

Published On

Apr 25, 2024

Authors

Pin Du, Jiale Wan, Jiakang Qu, Hongwei Xie, Dihua Wang, Huayi Yin

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