富镍层状氧化物正极锂金属电池的最新进展与展望

IF 42.9 Q1 ELECTROCHEMISTRY
Han Zhang , Ziqi Zeng , Shijie Cheng , Jia Xie
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引用次数: 0

摘要

锂金属阳极(LMA)与富镍层状氧化物阴极的配对用于构建锂金属电池(lmb),以实现超过500 Wh kg - 1的能量密度,受到工业界和科学界的极大关注。然而,在实际条件下暴露出了臭名昭着的问题,包括低电解质/容量(E/C)比(<;3 g (Ah)−1),高阴极质量负载(>;3毫安时cm−2),负/正(N/P)比低(<;3),这使得lmb的当前性能与商业应用的期望要求之间存在显着差距。在这篇综述中,我们总结了最近在理解LMA的机制退化方面取得的成就,然后提出了用于解决这些问题的实际策略。我们还考虑了富镍层状氧化物阴极的有害问题。此外,我们强调了目前在硬币/袋电池中实用lmb领域的进展,以刺激进一步的创新。最后,从实际lmb的角度提出了存在的问题和发展前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Recent progress and perspective on lithium metal battery with nickel-rich layered oxide cathode

Recent progress and perspective on lithium metal battery with nickel-rich layered oxide cathode
The pairing of lithium metal anode (LMA) with Ni-rich layered oxide cathodes for constructing lithium metal batteries (LMBs) to achieve energy density over 500 ​Wh ​kg−1 receives significant attention from both industry and the scientific community. However, notorious problems are exposed in practical conditions, including lean electrolyte/capacity (E/C) ratio (< 3 ​g ​(Ah)−1), high cathode mass loading (> 3 ​mAh ​cm−2), and low negative/positive (N/P) ratio (< 3), which creates a significant disparity between the current performance of LMBs and the desired requirements for commercial applications. In the review, we present a summary of the recent achievements made in understanding the mechanistic degradation of LMA, followed by practical strategies that are utilized to address these issues. We also consider the detrimental issues of Ni-rich layered oxide cathodes. Furthermore, we highlight current progresses in the field of practical LMBs in coin/pouch cells to stimulate further innovation. In the end, we propose the issues and prospects for development from the perspective of practical LMBs.
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CiteScore
33.70
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