文献类型：期刊文献

英文题名：Platelet carbon nanofibers as support of Pt-CoO electrocatalyst for superior hydrogen evolution

作者：Gan, Jie[1];Huang, Zikun[1];Luo, Wei[1];Chen, Wenyao[1];Cao, Yueqiang[1];Qian, Gang[1];Zhou, Xinggui[1];Duan, Xuezhi[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：52

起止页码：33

外文期刊名：JOURNAL OF ENERGY CHEMISTRY

收录：;EI(收录号：20202108699827);WOS:【SCI-EXPANDED(收录号:WOS:000595156500005)】；

基金：This work was financially supported by the National Natural Science Foundation of China (21922803 and 21776077), the Shanghai Natural Science Foundation (17ZR1407300 and 17ZR1407500), the Program for the Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, the Shanghai Rising-Star Program (17QA1401200), the State Key Laboratory of Organic-Inorganic Composites (oic-201801007), and the Open Project of State Key Laboratory of Chemical Engineering (SKLChe15C03).

语种：英文

外文关键词：Hydrogen evolution; Electrocatalysts; Platelet carbon nanofibers; Pt-CoO catalyst; Atomic layer deposition

摘要：Exploration of cost-effective Pt/C catalysts has been a significant issue for electrochemical hydrogen evolution reaction (HER) toward sustainable energy conversion and storage. Herein, we report a fabrication strategy by employing platelet carbon nanofibers (p-CNF) as the support to immobilize Pt-CoO HER electrocatalyst using atomic layer deposition method. The edge-rich p-CNF support is found to act as the anchoring sites of Pt nanoparticles and favorably capture electrons from Pt to yield electron-deficient Pt surfaces for the boosted HER. Additionally, the sequential growth of CoO onto the Pt/p-CNF catalyst elaborately constructs the Pt-CoO interface and facilitates the electron transfer from Pt to CoO, which further enhances the HER activity. These advantages endow the fabricated Pt-CoO/p-CNF catalyst with the superior HER activity, e.g., a very low overpotential of 26 mV at the current density of 10 mA.cm(-2) and a mass activity of 4.42 A.mg(Pt)(-1) at the overpotential of 30 mV, 18.8 times higher than that of the commercial 20 wt% Pt/C catalyst. The insights reported here could shed light on for the fabrication of cost-effective Pt-based composite HER catalysts. (c) 2020 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.