Volume 21, Issue 3 2407783
Research Article

Decoupled Water Reduction and Hydrazine Oxidation by Fast Proton Transport MoO3 Redox Mediator for Hydrogen Production

AJing Song

AJing Song

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Donghua University, Shanghai, 201620 China

Search for more papers by this author
Yuan Wei

Yuan Wei

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Donghua University, Shanghai, 201620 China

Search for more papers by this author
Xin Jin

Xin Jin

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Donghua University, Shanghai, 201620 China

Search for more papers by this author
Yuanyuan Ma

Corresponding Author

Yuanyuan Ma

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Donghua University, Shanghai, 201620 China

Jiangsu Hengli Chemical Fiber Co., Ltd, Suzhou, 215200 China

E-mail: [email protected]; [email protected]; [email protected]

Search for more papers by this author
Yonggang Wang

Corresponding Author

Yonggang Wang

Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai, 200433 China

E-mail: [email protected]; [email protected]; [email protected]

Search for more papers by this author
Jianping Yang

Corresponding Author

Jianping Yang

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Institute of Functional Materials, Donghua University, Shanghai, 201620 China

E-mail: [email protected]; [email protected]; [email protected]

Search for more papers by this author
First published: 18 November 2024
Citations: 2

Abstract

Water electrolysis powered by renewable energy is a green and sustainable method for hydrogen production. Decoupled water electrolysis with the aid of solid-state redox mediator could separate the hydrogen and oxygen production in time and space without the use of the membrane, showing high flexibility. Herein, a MoO3 electrode with fast proton transport property is employed as a solid-state redox mediator to construct a membrane-free decoupled acidic electrolytic system. The MoO3 electrode exhibits high specific capacity (204.3 mAh g−1 at 5 A g−1) and excellent rate performance (92.8 mAh g−1 at 150 A g−1) in the acidic environment. Due to the dense oxide-ion arrays, MoO3 still exhibits excellent performance under high mass-loading. In addition, a hybrid decoupled electrolysis system is also constructed by combining water reduction and hydrazine oxidation, which can not only generate high-purity H2 but also remove hydrazine hazards in acidic wastewater with lower energy consumption.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.