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Medientyp:
E-Artikel
Titel:
Nitrogen-plasma treated hafnium oxyhydroxide as an efficient acid-stable electrocatalyst for hydrogen evolution and oxidation reactions
Beteiligte:
Yang, Xiaofang;
Zhao, Fang;
Yeh, Yao-Wen;
Selinsky, Rachel S.;
Chen, Zhu;
Yao, Nan;
Tully, Christopher G.;
Ju, Yiguang;
Koel, Bruce E.
Erschienen:
Springer Science and Business Media LLC, 2019
Erschienen in:
Nature Communications, 10 (2019) 1
Sprache:
Englisch
DOI:
10.1038/s41467-019-09162-5
ISSN:
2041-1723
Entstehung:
Anmerkungen:
Beschreibung:
AbstractDevelopment of earth-abundant electrocatalysts for hydrogen evolution and oxidation reactions in strong acids represents a great challenge for developing high efficiency, durable, and cost effective electrolyzers and fuel cells. We report herein that hafnium oxyhydroxide with incorporated nitrogen by treatment using an atmospheric nitrogen plasma demonstrates high catalytic activity and stability for both hydrogen evolution and oxidation reactions in strong acidic media using earth-abundant materials. The observed properties are especially important for unitized regenerative fuel cells using polymer electrolyte membranes. Our results indicate that nitrogen-modified hafnium oxyhydroxide could be a true alternative for platinum as an active and stable electrocatalyst, and furthermore that nitrogen plasma treatment may be useful in activating other non-conductive materials to form new active electrocatalysts.