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

Authors :: Liu, Lele
Ding, Shouxiang
Yao, Lu
Liu, Mingqiang
Li, Shunning
Zhao, Qinghe
Qin, Runzhi
Pan, Feng
Source :: Chemical Communications. 5/21/2023, Vol. 59 Issue 41, p6227-6230. 4p.
Publication Year :: 2023
Abstract: In situ BaSO4 coating, generated in the first discharging of Ba2+ pre-intercalated δ-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. [ABSTRACT FROM AUTHOR]

Subjects :: *SURFACE coatings
*ELECTRIC batteries
*STORAGE batteries
*CATHODES
*PROTONS
*CRYSTALS

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