Platelet carbon nanofibers as support of Pt-CoO electrocatalyst for superior hydrogen evolution

作     者：Jie Gan Zikun Huang Wei Luo Wenyao Chen Yueqiang Cao Gang Qian Xinggui Zhou Xuezhi Duan Jie Gan;Zikun Huang;Wei Luo;Wenyao Chen;Yueqiang Cao;Gang Qian;Xinggui Zhou;Xuezhi Duan

作者机构：State Key Laboratory of Chemical EngineeringSchool of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2021年第30卷第1期

页      面：33-40,I0002页

核心收录：

学科分类：0820[工学-石油与天然气工程] 081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0827[工学-核科学与技术] 0703[理学-化学] 

基　　金：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) the Open Project of State Key Laboratory of Chemical Engineering (SKLChe15C03)。 

主　　题：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·mgPt-1at the overpotential of 30 mV,18.8 times higher than that of the commercial20 wt% Pt/C catalyst.The insights reported here could shed light on for the fabrication of cost-effective Pt-based composite HER catalysts.