文献类型：期刊文献

英文题名：Dynamically Assisted Electrodeposition by Hydrogen Bubbles on Carbonized Wood: A Nifeco Nanoflower Electrocatalyst for Efficient Hydrogen Evolution

作者：Qian, Yuanpeng[1,2] Hu, Mengliang[2] Li, Liping[2] Cao, Shuqi[1,2] Xu, Jingwen[2] Hong, Junxiong[1,2] Liu, Xuepeng[2] Xu, Jinmei[3] Guo, Chuigen[1,2]

第一作者：Qian, Yuanpeng

机构：[1] Institute of Biomass Engineering, South China Agricultural University, Guangzhou, 510642, China; [2] Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China; [3] Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing, 100091, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230382693)

语种：英文

外文关键词：Carbon - Electrocatalysis - Electrocatalysts - Electrodeposition - Electrodes - Energy policy - Iron alloys - Nanoflowers - Potassium hydroxide - Ternary alloys - Water pollution

摘要：The development of cost-effective, simple, and highly active catalysts for electrochemical water splitting in alkaline electrolytes to produce renewable source H2 is critical to solve the environmental pollution and energy crisis. In this study, a series of nanoflower-like NiFeCo/CW catalytic electrodes were prepared by a facile one-step dynamic hydrogen bubble template (DHBT) method for electrodeposition on carbonized wood (CW), which have excellent HER performance. By reasonably investigating the effects of H+ concentration and time, a catalyst with ideal deposition results was obtained. In 1 M KOH solution, the prepared NiFeCo/CW-450 catalyst exhibits a small overpotential of 37 mV to achieve a current density of 10 mA cm?2, and still possess a satisfactory low overpotential when a larger current density is reached (η400 = 238 mV, η1000 = 298 mV). Furthermore, NiFeCo/CW can keep structure and catalytic performance stable after 12 h long-term test at 10 mA cm?2. The remarkable HER performance results from the unique nanoflower electrode structure that is uniformly dispersed on CW to fully expose the active site. As a result, this work will provide new inspiration and strategy for the preparation of novel simple, inexpensive and efficient electrocatalytic hydrogen evolution electrodes using earth-abundant resources. ? 2023, The Authors. All rights reserved.