Facile sol-gel preparation of high-entropy multielemental electrocatalysts for efficient oxidation of methanol and urea

作     者：Talifhani Mushiana Mustafa Khan Muhammad Imran Abdullah Ning Zhang Mingming Ma Talifhani Mushiana;Mustafa Khan;Muhammad Imran Abdullah;Ning Zhang;Mingming Ma

作者机构：Department of ChemistryUniversity of Science and Technology of ChinaHefei 230026China School of BiologyFood and EnvironmentHefei UniversityHefei 230022China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2022年第15卷第6期

页      面：5014-5023页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.21778052 and 21975240) by the Fundamental Research Funds for the Central Universities(No.WK2060190102) 

主　　题：catalytic oxidation reaction high-entropy multi-elemental electrocatalysts sol-gel formic acid 

摘      要：High-entropy multi-elemental(HEM)electrocatalysts present superior catalytic performance due to the efficient synergism of their *** electrocatalysts are usually prepared through hydrothermal reactions or calcination,which could generate undesired heterogeneous structures that hinder the exploration of the structure–property relationship of these HEM ***,we report a sol-gel method to synthesize homogeneous HEM electrocatalysts for electro-oxidation of methanol and urea(methanol oxidation reaction(MOR)and urea oxidation reaction(UOR)),through an acid-catalyzed gelation at room *** Ni as the primary component for MOR and UOR,Co can reduce the overpotentials,while Fe can increase the catalytic activities and *** and phosphate can tune the charge distribution in active sites and speed up the reaction kinetics through fast proton ***,the optimal Ni_(2)Fe_(0.5)Co_(0.5)-BP HEM catalyst demonstrates superior catalytic activity together with good durability and great resistance to CO *** addition,a direct methanol fuel cell with Ni_(2)Fe_(0.5)Co_(0.5)-BP electrode can not only provide power,but also produce formic acid with high yield and high Faraday *** work presents a simple strategy to prepare high-performance HEM electrocatalysts for fuel cells and production of valueadded chemicals.