Novel Method Helps Quantify Reversibility and Irreversibility of Practical Li Metal Batteries

A research group led by Prof. LIU Zhaoping at the Ningbo Institute of Materials Technology and Engineering (NIMTE) of the Chinese Academy of Sciences (CAS) has proposed an analytical approach to quantitatively evaluate the reversibility and irreversibility of practical lithium-metal batteries (LMBs). Their study was published in Nature Energy.Thanks to their excellent energy density, LMBs are acknowledged as an important focus in the battery technology field. However, the poor electrochemical reversibility of lithium metal anodes has become a major bottleneck to improving the cycle life of LMBs; therefore, accurate analysis of the reversibility of lithium metal anodes is an important prerequisite for the development of long-life LMBs.Due to the excessive “lithium reservoir” in the anode that continuously compensates for the irreversible loss of lithium during cycling, the true…

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