Ongoing interest is focused on aqueous zinc ion batteries (ZIBs) for mass‐production energy storage systems as a result of their affordability, safety, and high energy density. Ensuring the stability of the electrode/electrolyte interface is of particular importance for prolonging the cycling ability to meet the practical requirements of rechargeable batteries. Zinc anodes exhibit poor cycle life and low coulombic efficiency, stemming from the severe dendrite growth, and irreversible byproducts such as H2 and inactive ZnO. Great efforts have recently been devoted to zinc anode protection for designing high‐performance ZIBs. However, the intrinsic origins of zinc plating/striping are poorly understood, which greatly delay its potential applications. Rather than focusing on battery metrics, this review delves deeply into the underlying science that triggers the deposition/dissolution of zinc ions. Furthermore, recent advances in modulating the zinc coordination environment, uniforming interfacial electric fields, and inducing zinc deposition are highlighted and summarized. Finally, perspectives and suggestions are provided for designing highly stable zinc anodes for the industrialization of the aqueous rechargeable ZIBs in the near future.
Mn-based
aqueous zinc-ion batteries (ZIBs) are promising candidate
for large-scale rechargeable energy storage because of easy fabrication,
low cost, and high safety. Nevertheless, the commercial application
of Mn-based cathode is hindered by the challenging issues of low rate
capability and poor cyclability. Herein, a manganese–vanadium
hybrid, K–V2C@MnO2 cathode, featured
with MnO2 nanosheets uniformly formed on a V2CTX MXene surface, is elaborately designed and synthesized
by metal–cation intercalation and following in situ growth strategy. Benefiting from the hybrid structure with high
conductivity, abundant active sites, and the synergistic reaction
of Mn2+ electrodeposition and inhibited structural damage
of MnO2, K–V2C@MnO2 shows
excellent electrochemical performance for aqueous ZIBs. Specifically,
it presents the high specific capacity of 408.1 mAh g–1 at 0.3 A g–1 and maintains the specific capacity
of 119.2 mAh g–1 at a high current density of 10
A g–1 in a long-term cycle of up to 10000 cycles.
It is superior to almost all reported Mn-based cathodes for ZIBs in
the aqueous electrolyte. The superior electrochemical performance
suggests that the Mn-based cathode materials designed in this work
can be a rational approach to be applied for high-performance ZIBs
cathodes.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.