1 research outputs found
Synthesis of Zn Intercalated Zn–V@Mo–V Nanorods-based Cathodes for Prolonged Cyclic Stability of Rechargeable Aqueous Zinc-Ion Batteries
Stationary
rechargeable Zn-ion batteries (ZIBs) are attractive
energy storages systems because of their natural abundance, safety,
and low cost. High capacity, stable, and robust cathode materials
play an important role in aqueous electrolyte systems in ZIBs, where
metal oxide cathode dissolution is a problem that needs to be addressed.
Herewith, we report an intercalation-type Zn-doped Zn–V@Mo–V
(ZMV) cathode material affording prolonged cycle stability and high
storage capacity. Porous, superfine nanostructures offer Zn2+ ion diffusion pathways, alleviating intercalation redox reactions
without dissolution. Zn doping restructures the cathode expansion-like,
resulting in increased electrical conductivity and faster electrochemical
ion diffusion. A reversible and uniform Zn electroplating at the anode
surface interface indicates improved cell reversibility. The ZMV cathode
scales up to assemble a pouch cell of Zn//ZnSO4//ZMV, where
the cathode enhances the rate performance and decreases the self-discharge
rate. High efficiency and long cycle life can be endowed to the cathode
material to construct a stable Zn-ion battery, accelerating the commercialization
of the whole system