Science Daily February 21, 2024
The sluggish ions-transfer and inhomogeneous ions-nucleation induce the formation of randomly oriented dendrites on Zn anode, while the chemical instability at anode–electrolyte interface triggers detrimental side reactions. A team of international researchers (Australia, China) designed a multifunctional hybrid interphase of Bi/Bi2O3 a novel synergistic regulation mechanism involving chemically inert interface protection mechanism suppressing side reactions, and thermodynamically favorable Zn atomic clusters dissociation mechanism impeding dendrites formation. Assisted by collaborative modulation behavior, the Zn@Bi/Bi2O3 symmetry cell delivered an ultrahigh cumulative plating capacity and ultralong lifetimes of 300 h even at high current density and depth of discharge. Under a low electrolyte-to-capacity ratio and negative-to-positive capacity ratio, Zn@Bi/Bi2O3||MnO2 full-cell exhibited a superior capacity retention. The scaled-up battery module combined with the photovoltaic panel presented excellent renewable-energy storage ability and long output lifetime (12 h). According to the researchers their work provides a synergistic mechanism to achieve the ultrastable Zn anode… read more. Open Access TECHNICAL ARTICLEÂ
Illustration of ions-deposition behavior and interfacial chemistry… Credit: Advanced Materials, 6 February, 2024Â