首页|Wood-derived freestanding integrated electrode with robust interface-coupling effect boosted bifunctionality for rechargeable zinc-air batteries

Wood-derived freestanding integrated electrode with robust interface-coupling effect boosted bifunctionality for rechargeable zinc-air batteries

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Fabricating non-noble metal-based carbon air electrodes with highly efficient bifunctionality is big challenge owing to the sluggish kinetics of oxygen reduction/evolution reaction(ORR/OER).The efficient cathode catalyst is urgently needed to further improve the performance of rechargeable zinc-air batteries.Herein,an activation-doping assisted interface modification strategy is demonstrated based on freestanding integrated carbon composite(CoNiLDH@NPC)composed of wood-based N and P doped active carbon(NPC)and CoNi layer double hy-droxides(CoNiLDH).In the light of its large specific surface area and unique defective structure,CoNiLDH@NPC with strong interface-coupling effect in 2D-3D micro-nanostructure exhibits outstanding bifunctionality.Such carbon composites show half-wave potential of 0.85 V for ORR,overpotential of 320 mV with current density of 10 mA cm-2 for OER,and ultra-low gap of 0.70 V.Furthermore,highly-ordered open channels of wood provide enormous space to form abundant triple-phase boundary for accelerating the catalytic process.Consequently,zinc-air batteries using CoNiLDH@NPC show high power density(aqueous:263 mW cm-2,quasi-solid-state:65.8 mW cm-2)and long-term stability(aqueous:500 h,quasi-solid-state:120 h).This integrated protocol opens a new avenue for the rational design of efficient freestanding air electrode from biomass resources.

Wood biomassBifunctional air electrodeFreestanding carbon compositeInterface-coupling effectZinc-air battery

Benji Zhou、Nengneng Xu、Liangcai Wu、Dongqing Cai、Eileen H.Yu、Jinli Qiao

展开 >

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Environmental Science and Engineering,Donghua University,2999 Ren'min North Road,Shanghai,201620,China

College of Science,Donghua University 2999 Ren'min North Road,Shanghai,201620,China

Shanghai Institute of Pollution Control and Ecological Security,1515 North Zhongshan Road,Shanghai,200092,China

Department of Chemical Engineering,Loughborough University,Loughborough,LE11 3TU,UK

展开 >

2024

10.1016/j.gee.2023.12.002

绿色能源与环境(英文)

绿色能源与环境(英文)

CSTPCD
ISSN：
年,卷(期)：2024.9(12)