A team led by Prof. Song Li from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) proposed the concept of intercalant-induced V t2g orbital occupation and developed an NH4+-intercalated vanadium oxide (NH4+-V2O5) for high-performance aqueous zinc-ion batteries (ZIBs). This work was published in PNAS.
ZIBs, due to their safety, non-toxicity, and high theoretical capacity, have become one of the most promising sustainable energy storage technologies. Among various electrode materials for ZIBs, vanadium oxides have been widely studied as cathode materials for ZIBs due to their flexible crystal structure and multivalence of vanadium.
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