首页|Integration of earth-abundant cocatalysts for high-performance photoelectrochemical energy conversion

Integration of earth-abundant cocatalysts for high-performance photoelectrochemical energy conversion

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Photoelectrochemical(PEC)energy conversion has emerged as a promising and efficient approach to sus-tainable energy harvesting and storage.By utilizing semiconductor photoelectrodes,PEC devices can har-ness solar energy and drive electrochemical reactions such as water splitting or carbon dioxide(CO2)reduction to generate clean fuels and value-added chemicals.However,PEC energy conversion faces sev-eral challenges such as high overpotential,sluggish reaction kinetics,charge carrier recombination,and stability issues,which limit its practical implementation.Recently,significant research has been con-ducted to improve the overall conversion efficiency of PEC devices.One particularly promising approach is the use of cocatalysts,which involves introducing specific cocatalysts onto the photoelectrode surface to promote charge separation,improve reaction kinetics,and reduce the overpotential,thereby enhanc-ing the overall performance of PEC energy conversion.This review provides a comprehensive overview of the recent developments in the earth-abundant cocatalysts for PEC water splitting and CO2 reduction.The main earth-abundant catalysts for the PEC water splitting include transition-metal dichalcogenide(TMD)-based materials,metal phosphides/carbides,and metal oxides/hydroxides.Meanwhile,PEC-CO2RR was divided into C1 and C2+based on the final product since various products could be produced,focusing on diverse earth-abundant materials-based cocatalysts.In addition,we provide and highlight key advancements achieved in the very recent reports on novel PEC system design engineering with cocatalysts.Finally,the current problems associated with PEC systems are discussed along with a sug-gested direction to overcome these obstacles.

Solar energyPhoto-electrochemicalWater splittingCO2 reductionCocatalysts

Joonhee Ma、Sang Hyun Ahn、Soo Young Kim

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Department of Materials Science and Engineering,Korea University,Seoul 02841,Republic of Korea

School of Chemical Engineering and Materials Science,Chung-Ang University,84 Heukseok-ro,Dongjak-gu,Seoul 06974,Republic of Korea

National Research Foundation of Korea(NRF)funded by the Korean governmentNational Research Foundation of Korea(NRF)funded by the Korean government

2021R1A4A30278782022M3H4A1A01012712

2024

10.1016/j.jechem.2023.09.021

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.88(1)
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