Issue 46, 2023

Decoding the puzzle: recent breakthroughs in understanding degradation mechanisms of Li-ion batteries

Abstract

Lithium-ion batteries (LIBs) remain at the forefront of energy research due to their capability to deliver high energy density. Understanding their degradation mechanism has been essential due to their rapid engagement in modern electric vehicles (EVs), where battery failure may incur huge losses to human life and property. The literature on this intimidating issue is rapidly growing and often very complex. This review strives to succinctly present current knowledge contributing to a more comprehensible understanding of the degradation mechanism. First, this review explains the fundamentals of LIBs and various degradation mechanisms. Then, the degradation mechanism of novel Li-rich cathodes, advanced characterization techniques for identifying it, and various theoretical models are presented and discussed. We emphasize that the degradation process is not only tied to the charge–discharge cycles; synthesis-induced stress also plays a vital role in catalyzing the degradation. Finally, we propose further studies on advanced battery materials that can potentially replace the layered cathodes.

Graphical abstract: Decoding the puzzle: recent breakthroughs in understanding degradation mechanisms of Li-ion batteries

Article information

Article type
Perspective
Submitted
11 9 2023
Accepted
05 10 2023
First published
10 10 2023

Dalton Trans., 2023,52, 17061-17083

Decoding the puzzle: recent breakthroughs in understanding degradation mechanisms of Li-ion batteries

A. N. Singh, K. Hassan, C. Bathula and K. Nam, Dalton Trans., 2023, 52, 17061 DOI: 10.1039/D3DT02957C

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