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Decoupling Hydrogen and Oxygen Production in Acidic Water Electrolysis Using a Polytriphenylamine‐Based Battery Electrode
Author(s) -
Ma Yuanyuan,
Dong Xiaoli,
Wang Yonggang,
Xia Yongyao
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201800436
Subject(s) - hydrogen production , water splitting , electrolysis of water , decoupling (probability) , oxygen evolution , photovoltaics , hydrogen , electrolysis , solar energy , high pressure electrolysis , photovoltaic system , battery (electricity) , materials science , electrode , process engineering , environmental science , chemistry , electrical engineering , engineering , physics , electrochemistry , catalysis , photocatalysis , power (physics) , organic chemistry , control engineering , quantum mechanics , electrolyte , biochemistry
Hydrogen production through water splitting is considered a promising approach for solar energy harvesting. However, the variable and intermittent nature of solar energy and the co‐production of H 2 and O 2 significantly reduce the flexibility of this approach, increasing the costs of its use in practical applications. Herein, using the reversible n‐type doping/de‐doping reaction of the solid‐state polytriphenylamine‐based battery electrode, we decouple the H 2 and O 2 production in acid water electrolysis. In this architecture, the H 2 and O 2 production occur at different times, which eliminates the issue of gas mixing and adapts to the variable and intermittent nature of solar energy, facilitating the conversion of solar energy to hydrogen (STH). Furthermore, for the first time, we demonstrate a membrane‐free solar water splitting through commercial photovoltaics and the decoupled acid water electrolysis, which potentially paves the way for a new approach for solar water splitting.