In situ BaSO4 coating enabled activation-free and ultra-stable delta-MnO2 for aqueous Zn-ion batteries

Lele Liu,Shouxiang Ding,Lu Yao,Mingqiang Liu,Shunning Li,Qinghe Zhao,Runzhi Qin,Feng Pan

CHEMICAL COMMUNICATIONS（2023）

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摘要

In situ BaSO4 coating, generated in the first discharging of Ba2+ pre-intercalated delta-MnO2, shortens the activation process by inducing fast proton intercalation and stabilizes the MnO2 crystal by suppressing Mn dissolution. The cathode delivers a decent electrochemical performance of 210 mA h g(-1) at 1C with a 98% retention after 200 cycles.

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关键词

activation-free,ultra-stable,zn-ion

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