TY - JOUR
T1 - High Solar-to-Hydrogen Conversion Efficiency at pH 7 Based on a PV-EC Cell with an Oligomeric Molecular Anode
AU - Shi, Yuanyuan
AU - Hsieh, Tsung Yu
AU - Hoque, Md Asmaul
AU - Cambarau, Werther
AU - Narbey, Stéphanie
AU - Gimbert-Surinãch, Carolina
AU - Palomares, Emilio
AU - Lanza, Mario
AU - Llobet, Antoni
N1 - Publisher Copyright:
© 2020 American Chemical Society.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2020/12/16
Y1 - 2020/12/16
N2 - In the urgent quest for green energy vectors, the generation of hydrogen by water splitting with sunlight occupies a preeminent standpoint. The highest solar-to-hydrogen (STH) efficiencies have been achieved with photovoltaic-electrochemical (PV-EC) systems. However, most PV-EC water-splitting devices are required to work at extreme conditions, such as in concentrated solutions of HClO4 or KOH or under highly concentrated solar illumination. In this work, a molecular catalyst-based anode is incorporated for the first time in a PV-EC configuration, achieving an impressive 21.2% STH efficiency at neutral pH. Moreover, as opposed to metal oxide-based anodes, the molecular catalyst-based anode allows us to work with extremely small catalyst loadings (<16 nmol/cm2) due to a well-defined metallic center, which is responsible for the fast catalysis of the reaction in the anodic compartment. This work paves the way for integrating molecular materials in efficient PV-EC water-splitting systems.
AB - In the urgent quest for green energy vectors, the generation of hydrogen by water splitting with sunlight occupies a preeminent standpoint. The highest solar-to-hydrogen (STH) efficiencies have been achieved with photovoltaic-electrochemical (PV-EC) systems. However, most PV-EC water-splitting devices are required to work at extreme conditions, such as in concentrated solutions of HClO4 or KOH or under highly concentrated solar illumination. In this work, a molecular catalyst-based anode is incorporated for the first time in a PV-EC configuration, achieving an impressive 21.2% STH efficiency at neutral pH. Moreover, as opposed to metal oxide-based anodes, the molecular catalyst-based anode allows us to work with extremely small catalyst loadings (<16 nmol/cm2) due to a well-defined metallic center, which is responsible for the fast catalysis of the reaction in the anodic compartment. This work paves the way for integrating molecular materials in efficient PV-EC water-splitting systems.
KW - anode
KW - molecular catalyst
KW - neutral pH
KW - photovoltaic-electrolysis (PV-EC)
KW - solar-driven water splitting
KW - solar-to-hydrogen efficiency
UR - http://www.scopus.com/inward/record.url?scp=85097747848&partnerID=8YFLogxK
U2 - 10.1021/acsami.0c16235
DO - 10.1021/acsami.0c16235
M3 - 文章
C2 - 33258374
AN - SCOPUS:85097747848
VL - 12
SP - 55856
EP - 55864
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
SN - 1944-8244
IS - 50
ER -
