期刊
NANO ENERGY
卷 51, 期 -, 页码 286-293出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2018.06.071
关键词
Nitrogen-doped carbon nanofiber; Partially oxidized Ni nanoparticle; Mesoporous structure; Bifunctional electrocatalyst; Overall water splitting
类别
资金
- National Natural Science Foundation of China [21431006, 21761132008, 21671184, 21703229]
- Foundation for Innovative Research Groups of the National Natural Science Foundation of China [21521001]
- Key Research Program of Frontier Sciences, CAS [QYZDJ-SSW-SLH036]
- National Basic Research Program of China [2014CB931800]
- Users with Excellence and Scientific Research Grant of Hefei Science Center of CAS [2015HSC-UE007]
- Recruitment Program of Global Experts
- National Postdoctoral Program for Innovative Talents [BX201600142]
- China Postdoctoral Science Foundation [2017M610383]
- Fundamental Research Funds for the Central Universities [WK2060190077]
The development of efficient and low-cost bifunctional electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is crucial for the successful implementation of water splitting technologies, which represents a promising and appealing solution to the sustainable-energy conversion. In this work, a nanocomposite electrocatalyst based on partially oxidized Ni nanoparticles supported on Ni-N co-doped carbon nanofibers (PO-Ni/Ni-N-CNFs) was developed using low-cost hydrothermal carbonaceous nanofibers, pyrrole, and NiCl2 as precursors. Benefiting from effective active sites, mesoporous structure, and interlinked nanofiber network, the as-obtained nanocomposite electrocatalyst exhibited superior catalytic activity and durability for both HER and OER in alkaline media. Furthermore, the practical application of PO-Ni/Ni-N-CNFs as a bifunctional catalyst for overall water splitting was demonstrated, with a current density of 10 mA cm(-2) achieved at the voltage of 1.69 V.
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