Artificial Zn-Phytate Layer to Enable Highly Reversible Zn-Metal Anode in Zinc Ion Battery
In recent years,zinc-ion batteries have been regarded as a potential replacement for lithium batteries due to their high power density,good safety,and low cost.However,the side reactions and dendrites growth can result in low coulombic efficiency,limiting its fur-ther development.In this paper,an artificial Zn-phytate layer on the zinc anode is construc-ted by the reaction between Zn and phytic acid(PA),which can avoid the direct contact be-tween the zinc anode and the water in the electrolyte,inhibiting the side reactions.Moreo-ver,the abundant hydrophilic and zinc-philic functional groups in zinc phytate can increase the infiltration of the electrolyte and enhance the adsorption capacity of Zn2+,which contrib-ute to changing the nucleation of zinc and inhibiting the growth of dendrites.The symmetric battery with PA-treated zinc anode can work stably for nearly 1 900 h at 0.5 mA·cm-2,which is almost 15 times that of the zinc-zinc-based symmetric battery.
zinc ion batteryzinc anodedendritesside reactionsphytic acid
万方数据
维普
