In situ BaSO 4 coating enabled activation-free and ultra-stable δ-MnO 2 for aqueous Zn-ion batteries.

Lele LiuShouxiang DingLu YaoMingqiang LiuShunning LiQinghe ZhaoRunzhi Qin Yancong Feng

Published in: Chemical communications (Cambridge, England) (2023)

In situ BaSO 4 coating, generated in the first discharging of Ba 2+ pre-intercalated δ-MnO 2 , shortens the activation process by inducing fast proton intercalation and stabilizes the MnO 2 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.

Keyphrases

ion batteries
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heavy metals
high resolution
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reduced graphene oxide
room temperature