Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 6, Issue 19, Pages 9009-9018Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta02528b
Keywords
-
Funding
- National Natural Science Foundation of China [21561012, 51772213, 11174219, 11474217]
- Ministry of Education, Singapore [MOE2015-T2-2-094]
- Natural Science Foundation of Shanghai [18ZR1442300]
- Basic Scientific Research Funds of Central Universities
Ask authors/readers for more resources
Earth-abundant electrocatalysts for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in a wide pH range are highly desirable for sustainable energy conversion technologies, but challenging to develop. Herein, we report hollow CoP nanosphere-embedded carbon nanotube/nitrogen-doped carbon (NC-CNT/CoP) nanoarrays, in which a nanoscale Kirkendall effect generates few-layer graphene-coated hollow CoP nanospheres with abundant active sites. The integrated NC-CNT/CoP electrode behaves as an efficient pH-universal HER catalyst and, through in situ transformation, the derived materials show excellent OER performance. The NC-CNT/CoP-based electrolyzers achieve a current density of 10 mA cm(-2) at low voltages of 1.63, 1.69, and 1.66 V in KOH, PBS, and H2SO4, respectively, which are similar to the values obtained using noble metal catalysts. Importantly, the integrated electrode exhibits superior stability than that of the benchmark noble metals in a wide pH range. This work presents a promising method for achieving nonprecious catalysts for efficient energy conversion.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available