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In Situ Electron Paramagnetic Resonance Reveals Fading Mechanism of Mn-Based Prussian Blue Analogue:Accelerated Mn Dissolution Due to Charge Delocalization
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作者 Xiaobing Lou Zonglin Li +4 位作者 shinuo kang Yufan Li Sen Ma Fushan Geng Bingwen Hu 《Renewables》 2024年第5期341-352,共12页
Contrasting with Fe-based Prussian blue analogues(PBAs),Mn-based PBAs with higher energy density are more promising cathode materials for Na-ion batteries.However,fast capacity fading has severely impeded its practica... Contrasting with Fe-based Prussian blue analogues(PBAs),Mn-based PBAs with higher energy density are more promising cathode materials for Na-ion batteries.However,fast capacity fading has severely impeded its practical use,which is still not well understood.To elucidate the fading mechanism,in situ and ex situ electron paramagnetic resonance are employed here.The results first demonstrate the charge delocalization of Mn2+and Mn dissolution during cycles,which are further proved to be highly related.Our work reveals the inherent shortcoming of Mn-based PBA cathodes in liquid electrolyte. 展开更多
关键词 electron paramagnetic resonance fading mechanism Prussian blue analogues sodium-ion batteries Mn dissolution
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