Core–Shell δ-MnO₂ Cathode

High capacity long cycle

A continuous conductive carbon core uniformly coated with MnO₂ shell simultaneously addresses low electronic conductivity and dissolution–redeposition, enabling high capacity and long life for aqueous zinc-ion battery cathodes.

Han, Yuan · Wu, Qiong · Li, Siqi · Qiangwei, Ding · Cao, Yong · Gao, Yuanyuan · Liu, Rongmei · Wang, Tao · Tian, Zhongliang · Yang, Chao

Journal of Alloys and Compounds 2023

Advantages

high specific capacity in 2.0 M ZnSO₄ aqueous electrolyte

moderate rate

cycling properties