Unveiling the parasitic-reaction-driven surface reconstruction in Ni-rich cathode and the electrochemical role of Li2CO3

Jiyu Cai,Zhenzhen Yang,Xinwei Zhou,Bingning Wang,Ana Suzana,Jianming Bai,Chen Liao,Yuzi Liu,Yanbin Chen,Shunlin Song,Xuequan Zhang,Li Wang,Xiangming He,Xiangbo Meng, Niloofar Karami,Baasit Ali Shaik Sulaiman,Natasha A. Chernova,Shailesh Upreti,Brad Prevel,Feng Wang

Journal of Energy Chemistry（2023）

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摘要

Li2CO3 impurity is a promoter of parasitic reactions. Parasitic reactions release electrical charge for Ni reduction and H+ species to attack lattice oxygen, exacerbating rock-salt transformation at Ni-rich cathode surface.

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关键词

Ni-rich cathodes,Surface reconstructions,Phase transformation,Parasitic reactions,Li2CO3

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