TY  - JOUR
AU  - Chen, Tengge
AU  - Liu, Di
AU  - Li, Xueli
AU  - Shi, Mengqing
AU  - Xiang, Zhonghua
PY  - 2023
TI  - A Mass Transfer-Enhanced Pyrolysis-Free Bifunctional Catalyst to Boost Ultralong Lifespan Zinc-Air Batteries
JO  - Energy Material Advances
SN  - 2097-1133
SP  - 0061
VL  - 4
AB  - The development of efficient and low-cost bifunctional oxygen catalysts is essential yet a challenge for zinc-air batteries (ZABs). Here, we prepared a pyrolysis-free 3-dimensional hybrid catalyst (COP-Fe@3D-LDH) with bifunctional oxygen-catalytic activity by integrating layered double hydroxides (3D-LDH) and a fully conjugated iron phthalocyanine-based covalent organic polymer (COP-Fe). More hierarchically porous and larger specific surface area (170.4 m2 g−1) can effectively enhance the mass transfer process and active site exposure of cathode, allowing COP-Fe@3D-LDH to exhibit an outstanding peak power density (148.5 mW cm−2) and an ultralong lifespan (over 400 h at 10 mA cm−2) in ZABs. Accordingly, this work provides a new perspective to enhance the performance of pyrolysis-free catalysts in ZABs.
UR  - https://doi.org/10.34133/energymatadv.0061
DO  - 10.34133/energymatadv.0061