Active site recovery and N-N bond breakage during hydrazine oxidation boosting the electrochemical hydrogen production

Libo Zhu, Jian Huang, Ge Meng, Tiantian Wu, Chang Chen, Han Tian, Yafeng Chen, Fantao Kong, Ziwei Chang, Xiangzhi Cui () and Jianlin Shi ()
Additional contact information
Libo Zhu: Chinese Academy of Sciences
Jian Huang: Chinese Academy of Sciences
Ge Meng: Chinese Academy of Sciences
Tiantian Wu: Chinese Academy of Sciences
Chang Chen: Chinese Academy of Sciences
Han Tian: Chinese Academy of Sciences
Yafeng Chen: University of Science and Technology Beijing
Fantao Kong: Chinese Academy of Sciences
Ziwei Chang: Shanghai Tech University
Xiangzhi Cui: Chinese Academy of Sciences
Jianlin Shi: Chinese Academy of Sciences

Nature Communications, 2023, vol. 14, issue 1, 1-13

Abstract: Abstract Substituting hydrazine oxidation reaction for oxygen evolution reaction can result in greatly reduced energy consumption for hydrogen production, however, the mechanism and the electrochemical utilization rate of hydrazine oxidation reaction remain ambiguous. Herein, a bimetallic and hetero-structured phosphide catalyst has been fabricated to catalyze both hydrazine oxidation and hydrogen evolution reactions, and a new reaction path of nitrogen-nitrogen single bond breakage has been proposed and confirmed in hydrazine oxidation reaction. The high electro-catalytic performance is attributed to the instantaneous recovery of metal phosphide active site by hydrazine and the lowered energy barrier, which enable the constructed electrolyzer using bimetallic phosphide catalyst at both sides to reach 500 mA cm−2 for hydrogen production at 0.498 V, and offer an enhanced hydrazine electrochemical utilization rate of 93%. Such an electrolyzer can be powered by a bimetallic phosphide anode-equipped direct hydrazine fuel cell, achieving self-powered hydrogen production at a rate of 19.6 mol h−1 m−2.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-023-37618-2 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37618-2

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-023-37618-2

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().