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2023年12期
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Efficient solar fuel production enabled by an iodide oxidation reaction on atomic layer deposited MoS2
Efficient solar fuel production enabled by an iodide oxidation reaction on atomic layer deposited MoS2
摘要
Oxygen evolution reaction(OER)as a half-anodic reaction of water splitting hinders the overall reaction efficiency owing to its thermodynamic and kinetic limitations.Iodide oxidation reaction(IOR)with low thermodynamic barrier and rapid reaction kinetics is a promising alternative to the OER.Herein,we present a molybdenum disulfide(MoS2)electrocatalyst for a high-efficiency and remarkably durable anode enabling IOR.MoS2 nanosheets deposited on a porous carbon paper via atomic layer deposition show an IOR current density of 10 mA cm-2 at an anodic potential of 0.63 V with respect to the reversible hydrogen electrode owing to the porous substrate as well as the intrinsic iodide oxidation capability of MoS2 as confirmed by theoretical calculations.The lower positive potential applied to the MoS2-based heterostructure during IOR electrocatalysis prevents deterioration of the active sites on MoS2,resulting in exceptional durability of 200 h.Subsequently,we fabricate a two-electrode system comprising a MoS2 anode for IOR combined with a commercial Pt@C catalyst cathode for hydrogen evolution reaction.Moreover,the photovoltaic-electrochemical hydrogen production device comprising this electrolyzer and a single perovskite photovoltaic cell shows a record-high current density of 21 mA cm-2 at 1 sun under unbiased conditions.
Author：
Young Sun Park
Gyumin Jang
Inkyu Sohn
Hyungsoo Lee
Jeiwan Tan
Juwon Yun
Sunihl Ma
Jeongyoub Lee
Chan Uk Lee
Subin Moon
Hayoung Im
Seung-Min Chung
Seungho Yu
Hyungjun Kim
Jooho Moon
作者单位：
Department of Materials Science and Engineering,Yonsei University,Seoul,Republic of Korea
School of Electrical and Electronic Engineering,Yonsei University,Seoul,Republic of Korea
Energy Storage Research Center,Korea Institute of Science and Technology,Seoul,Republic of Korea
年，卷(期)：
2023, 5(12)
机标分类号：
O643
R741.02
O572.31
在线出版日期：
2024年4月25日
