期刊
CARBON
卷 145, 期 -, 页码 201-208出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2019.01.011
关键词
Supercritical carbon dioxide; Nickel ferrate; Carbon nanotubes; Bifunctional electrocatalyst; Water splitting
资金
- National Natural Science Foundation of China [51702213]
- Shanghai Science and Technology Commission [18060502300]
- Natural Science Foundation of Shanghai [16ZR1423500]
- Program for Associate Professor of Special Appointment (Young Eastern Scholar) at Shanghai Institutions of Higher Learning [QD2016013]
- National 1000 Young Talents Program of China
- Shanghai Pujiang Program [17PJ1406900]
- Chenguang Program [17CG48]
- Fundamental Research Funds for the Central Universities [2018KFYXKJC044, 2018KFYYXJJ121, 2017KFXKJC002, 2017KFYXJJ164]
- Innovation Foundation of Shenzhen Government [JCYJ20160408173202143]
Highly efficient and cost-effective bifunctional electrode materials are vital for both hydrogen and oxygen evolution reactions in water splitting. Assisting by the unique supercritical carbon dioxide (SC-CO2) technique, NiFe2O4 nanoparticles are directly anchored on the vertically aligned carbon nanotubes (VACNT). The integrated hybrid electrocatalyst of NiFe2O4/VACNT demonstrates remarkable catalytic activities for both OER and HER. It requires overpotentials of only 240 mV and 150 mV to achieve 10 mA cm(-2) anodic and cathodic current densities, respectively. Such excellent performance is credited to the synergistic effect raising from the interaction of tiny NiFe2O4 particles and VACNT, which provides highly exposed catalytic sites, fast charge transport, excellent reactant diffusion and interface infiltration. This work not only provides an effective technique to prepare efficient electrocatalyst for overall water splitting but also offers important understandings in nanostructure engineering for rational design functional materials in multidisciplinary application including energy conversion. (c) 2019 Elsevier Ltd. All rights reserved.
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