Unveiling Surface Reconstruction as the Primary Trigger for Capacity Loss in Ultra-High Nickel Cathodes,Angewandte Chemie International Edition

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Unveiling Surface Reconstruction as the Primary Trigger for Capacity Loss in Ultra-High Nickel Cathodes
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2024-11-27 , DOI: 10.1002/anie.202417278
Lang Qiu ₁ , Mengke Zhang ₁ , Weibo Hua ₂ , Yi Wang ₁ , Yuting Deng ₁ , Zhuangzhi Li ₁ , Yang Song ₁ , Zhenguo Wu ₁ , Yao Xiao ₃ , Xiaodong Guo ₁

Affiliation

The mechanical and structural degradation of ultra-high Ni cathodes with different structures was systematically studied. contrary to the traditional view, structural and electrochemical characterizations of the cycled cathodes demonstrate that intragranular cracks, intergranular cracks, and nanopores are not the primary contributing factors of capacity loss. Instead, surface reconstruction (i.e., chemical decay) triggers rapid capacity decay.

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