首页|Molecular-level proton acceptor boosts oxygen evolution catalysis to enable efficient industrial-scale water splitting

Molecular-level proton acceptor boosts oxygen evolution catalysis to enable efficient industrial-scale water splitting

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Industrial water splitting has long been suppressed by the sluggish kinetics of the oxygen evolution reaction(OER),which requires a catalyst to be efficient.Herein,we propose a molecular-level proton acceptor strategy to produce an efficient OER catalyst that can boost industrial-scale water splitting.Molecular-level phosphate(-PO4)group is introduced to modify the surface of PrBa0.5Ca0.5Co2O5+δ(PBCC).The achieved catalyst(PO4-PBCC)exhibits significantly enhanced catalytic performance in alkaline media.Based on the X-ray absorption spectroscopy results and density functional theory(DFT)calculations,the PO4 on the surface,which is regarded as the Lewis base,is the key factor to overcome the kinetic limitation of the proton transfer process during the OER.The use of the catalyst in a membrane electrode assembly(MEA)is further evaluated for industrial-scale water splitting,and it only needs a low voltage of 1.66 V to achieve a large current density of 1 A cm-2.This work provides a new molecular-level strategy to develop highly efficient OER electrocatalysts for industrial applications.

Oxygen evolution reactionNanofiberWater splittingProton acceptorPerovskite

Yaobin Wang、Qian Lu、Xinlei Ge、Feng Li、Le Chen、Zhihui Zhang、Zhengping Fu、Yalin Lu、Yang Song、Yunfei Bu

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Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET),Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC),UNIST-NUIST Energy and Environment Jointed Lab,(UNNU),School of Environmental Science and Technology,Nanjing University of Information Science and Technology(NUIST),219 Ningliu,Nanjing,210044,China

Laboratory of Advanced Materials,Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,Fudan University,220 Handan,Shanghai,200433,China

Jiangsu Key Laboratory of Advanced Materials and Technology,School of Petrochemical Engineering,Changzhou University,1 Gehu,Changzhou,213164,China

Anhui Laboratory of Advanced Photon Science and Technology,University of Science and Technology of China(USTC),96 Jinzhai,Hefei,Anhui 230026,China

School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,200 Xiaolingwei,210094,China

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National Natural science Foundation of ChinaJiangsu Provincial Specially Appointed Professors Foundation

22272081

2024

10.1016/j.gee.2022.07.001

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(2)
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