Manipulating dehydrogenation kinetics through dual-doping Co3N electrode enables highly efficient hydrazine oxidation assisting self-powered H2 production

Yi Liu, Jihua Zhang, Yapeng Li, Qizhu Qian, Ziyun Li, Yin Zhu and Genqiang Zhang ()
Additional contact information
Yi Liu: University of Science and Technology of China
Jihua Zhang: Guizhou Education University
Yapeng Li: University of Science and Technology of China
Qizhu Qian: University of Science and Technology of China
Ziyun Li: University of Science and Technology of China
Yin Zhu: University of Science and Technology of China
Genqiang Zhang: University of Science and Technology of China

Nature Communications, 2020, vol. 11, issue 1, 1-13

Abstract: Abstract Replacing sluggish oxygen evolution reaction (OER) with hydrazine oxidation reaction (HzOR) to produce hydrogen has been considered as a more energy-efficient strategy than water splitting. However, the relatively high cell voltage in two-electrode system and the required external electric power hinder its scalable applications, especially in mobile devices. Herein, we report a bifunctional P, W co-doped Co3N nanowire array electrode with remarkable catalytic activity towards both HzOR (−55 mV at 10 mA cm−2) and hydrogen evolution reaction (HER, −41 mV at 10 mA cm−2). Inspiringly, a record low cell voltage of 28 mV is required to achieve 10 mA cm−2 in two-electrode system. DFT calculations decipher that the doping optimized H* adsorption/desorption and dehydrogenation kinetics could be the underlying mechanism. Importantly, a self-powered H2 production system by integrating a direct hydrazine fuel cell with a hydrazine splitting electrolyzer can achieve a decent rate of 1.25 mmol h−1 at room temperature.

Date: 2020
References: Add references at CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.nature.com/articles/s41467-020-15563-8 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:11:y:2020:i:1:d:10.1038_s41467-020-15563-8

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

DOI: 10.1038/s41467-020-15563-8

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 ().