Recent Advances on Self ‐Supported Arrayed Bifunctional Oxygen Electrocatalysts for Flexible Solid‐State Zn–Air Batteries

Recent advances on the application of nanoarrayed bifunctional oxygen electrocatalysts as air cathodes for flexible solid ‐state Zn–air batteries are reviewed. Various arrayed bifunctional oxygen electrocatalysts, including carbonaceous material arrays, transition metal compound arrays, and transition metals/carbon arrays transition metal compounds/carbon arrays, and their applications in Zn–air batteries with tw o configurations (i.e., planar stacks and cable fibers), are discussed. AbstractFlexible solid ‐state Zn–air batteries have been rapidly developed benefiting from the uprising demand for wearable electronic devices, wherein the air electrode integrated with efficient bifunctional oxygen electrocatalysts plays an important role to achieve high performance. Binder‐free self‐supported bi functional catalysts can provide large active surface area, fast electron transport path, easy ion diffusion, and excellent structural stability and flexibility, thus acting as promising flexible air cathodes. In this review, recent advances on the application of nanoarrayed electrocatalysts as air cathodes in flexible Zn–air batteries are reviewed. Especially, various types of bifunctional oxygen electrocatalysts, including carbonaceous material arrays, transition metal compound arrays, transition metal/carbon arrays, transition metal compound/carbon arrays, and other hybrid arrays, are dis cussed. The applications of flexible Zn–air batteries with two configurations ...

Source: Small - July 7, 2020 Category: Nanotechnology Authors: Yijie Wang, Qinghe Cao, Cao Guan, Chuanwei Cheng Tags: Review Source Type: research