Affiliation:
1. State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology, Beijing 100029, PR China.
Abstract
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 m
2
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.
Publisher
American Association for the Advancement of Science (AAAS)
Subject
Energy (miscellaneous),Fuel Technology,Materials Science (miscellaneous),Renewable Energy, Sustainability and the Environment
Cited by
2 articles.
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