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

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

机构地区：[1]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 [2]Laboratory of Advanced Materials,Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials,Fudan University,220 Handan,Shanghai,200433,China [3]Jiangsu Key Laboratory of Advanced Materials and Technology,School of Petrochemical Engineering,Changzhou University,1 Gehu,Changzhou,213164,China [4]Anhui Laboratory of Advanced Photon Science and Technology,University of Science and Technology of China(USTC),96 Jinzhai,Hefei,Anhui 230026,China [5]School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,200 Xiaolingwei,210094,China

出　　处：《Green Energy & Environment》2024年第2期344-355,共12页绿色能源与环境（英文版）

基　　金：supported by the National Natural Sci-ence Foundation of China(22272081),Jiangsu Provincial Specially Appointed Professors Foundation.

摘　　要：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(-PO_(4))group is introduced to modify the surface of PrBa_(0.5)Ca_(0.5)Co_(2)O_(5)+δ(PBCC).The achieved catalyst(PO_(4)-PBCC)exhibits significantly enhanced catalytic performance in alkaline media.Based on the X-ray absorption spectroscopy results and density functional theory(DFT)calculations,the PO_(4)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.

关 键 词：Oxygen evolution reaction NANOFIBER Water splitting Proton acceptor PEROVSKITE 

分 类 号：TQ426[化学工程]