Given the energy demands of the electromobility market, the energy density and safety of lithium batteries (LBs) need to be im-proved, whereas its cost needs to be decreased. For the enhanced performance and decreased cost, more suitable electrode and electrolyte ma-terials should be developed based on the improved understanding of the degradation mechanisms and structure–performance correlation in the LB system. Thus, various in situ characterization technologies have been developed during the past decades, providing abundant guidelines on the design of electrode and electrolyte materials. Here we first review the progress of in situ characterization of LBs and emphasize the feature of the multi-model coupling of different characterization techniques. Then, we systematically discuss how in situ characterization technologies reveal the electrochemical processes and fundamental mechanisms of different electrode systems based on representative electrode materials and electrolyte components. Finally, we discuss the current challenges, future opportunities, and possible directions to promote in situ charac-terization technologies for further improvement of the battery performance.

Mei Yang;Ruyi Bi;Jiangyan Wang;Ranbo Yu;Dan Wang

State Key Laboratory of Biochemical Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;Department of Energy Storage Science and Engineering,School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China;School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing 10049,China

矿物冶金与材料学报

[1]Mei Yang;Ruyi Bi;Jiangyan Wang;Ranbo Yu;Dan Wang-.Decoding lithium batteries through advanced in situ characterization techniques)[J].矿物冶金与材料学报,2022(05):965-989

electromobility

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