Journal
NANOTECHNOLOGY
Volume 30, Issue 48, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/ab3cd9
Keywords
phosphorus doping; flexible electrode; abundant elements; bifunctional electrocatalyst; water splitting
Funding
- Donghua University [109-07-0053-028]
- Fundamental Research Funds for the Central Universities [2232019D3-41]
- National Natural Science Foundation of China [21703031]
- Shanghai Talent Development Funding
- National Key R&D Program of China [16D110917]
- City University of Hong Kong Strategic Research Grant (SRG) [7005105]
Ask authors/readers for more resources
High-performance and earth-abundant NiFeP is an excellent bifunctional catalyst for water splitting in acidic and alkaline environments, and NiFeP nanoflakes on CoP layer composite with a conductive carbon cloth (CC) substrate as the trunk-leaf flexible structure (NiFeP/CoP/CC) is prepared by direct high-temperature phosphorization. Overpotentials of only 96.38 and 78.80 mV are required in hydrogen evolution reaction in 1 M KOH and 0.5 M H2SO4, respectively, to generate an electrocatalytic current density of 10 mA cm(-2). A small Tafel slope of 70.67 and 63.21 mV per decade are also observed from NiFeP/CoP/CC revealing a Volmer- Heyrovsky mechanism in both media. The electrocatalyst also delivers excellent oxygen evolution reaction performance in the alkaline environment and long-term electrochemical durability for at least 24 h in electrolytes over a wide pH range. A device is assembled with two identical flexible ultrathin NiFeP/CoP/CC as both the anode and cathode in 1 M KOH driven by a set of 1.6 V solar cells. During 32 h of electrolysis, the results show that the current of our electrodes maintains 80% performance at a constant voltage of 1.7 V for 32 h, and the NiFeP/CoP/CC anodes and cathodes have large potential in industrial alkaline water splitting.
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