Deciphering the Degradation Mechanisms and Realize High‐Voltage Stability of A3V2(PO4)3 (A = Li+, Na+) in Aqueous Dual‐Ion Batteries
Chongrui Dong,
Yuanjing Chen,
Yan Ding
et al.
Abstract:Polyanionic A3V2(PO4)3 (A = Li+, Na+) with open channels have been extensively utilized as cathode materials for aqueous zinc‐metal batteries (AZMBs), whereas suffering from severe capacity fading and rapid operation voltage decay during cycling. when used as In this work, it is disclosed that the rapid degradation is induced by an irreversible phase change from electrochemical active Li3V2(PO4)3 to nonactive monoclinic LiZnPO4, as well as active Na3V2(PO4)3 to nonactive rhombic Zn3(PO4)2(H2O)4. Subsequently, … Show more
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