抑制锂电池铝集流器腐蚀的策略

Changxing Han, Guansheng Chen, Yu Ma, Jun Ma, Xiong Shui, Shanmu Dong, Gaojie Xu, Xinhong Zhou, Zili Cui, Lixin Qiao, Guanglei Cui
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引用次数: 0

摘要

铝(Al)箔作为锂电池中主要的正极集流材料,由于其在高压下的严重腐蚀,在满足可充电储能系统日益增长的能量密度需求方面仍不理想。这种Al腐蚀会导致阴极脱层,内阻增大,催化电解液分解,导致电池过早失效。因此,系统地了解锂电池的腐蚀机理和有效的防腐蚀策略是提高锂电池整体性能的必要条件。本文对铝集流器的腐蚀机理进行了系统的总结和阐述。此外,综述了近年来抑制铝腐蚀的研究进展和策略进展。最后,为进一步抑制Al腐蚀,实现锂电池高能量密度、长循环寿命、高安全性提供了一个有动力的视角和研究方向。
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Strategies towards inhibition of aluminum current collector corrosion in lithium batteries
Aluminum (Al) foil, serving as the predominant current collector for cathode materials in lithium batteries, is still unsatisfactory in meeting the increasing energy density demand of rechargeable energy storage systems due to its severe corrosion under high voltages. Such Al corrosion may cause delamination of cathodes, increasement of internal resistance, and catalysis of electrolyte decomposition, thus leading to premature failure of batteries. Hence, a systematic understanding of the corrosion mechanisms and effective anticorrosion strategies are necessary to enhance overall performance of lithium batteries. In this review, the corrosive mechanisms related to Al current collectors are systematically summarized and clarified. In addition, an overview on recent progress and advancement of strategies toward inhibiting Al corrosion is presented. In the end, we also provide a perspective with motivation to stimulate new ideas and research directions to further inhibit Al corrosion to achieve high energy density, long cycle life, and high safety of lithium batteries.
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