Urea electrooxidation-boosted hydrogen production on nitrogen-doped porous carbon nanorod-supported nickel phosphide nanoparticles

作     者：Xiaoyu Zhang Ge Ma Lingling Shui Guofu Zhou Xin Wang Xiaoyu Zhang;Ge Ma;Lingling Shui;Guofu Zhou;Xin Wang

作者机构：South China Academy of Advanced Optoelectronics&International Academy of Optoelectronics at ZhaoqingSouth China Normal UniversityGuangzhou 510631GuangdongChina 

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

年 卷 期：2022年第31卷第9期

页      面：88-96,I0003页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the financial support from the Outstanding Youth Project of Guangdong Natural Science Foundation(Grant No.2021B1515020051) the Science and Technology Program of Guangzhou(2019050001) the Special Fund Project of Science and Technology Application in Guangdong(2017B020240002) the National 111 project 

主　　题：Electrochemical water splitting Nitrogen-doped carbon Nickel phosphide nanoparticles Urea oxidation reaction Electrolysis voltage 

摘      要：Urea electro-oxidation reaction(UEOR)-boosted water electrolysis can supplant the kinetics-restricted oxygen evolution reaction(OER)and provide an energy-saving method of hydrogen ***,low UEOR activity and the poisoning issue of the catalyst limit its practical ***,a simple coordination reaction is used to synthesize the dimethylglyoxime-NiⅡcomplex(DMGNiⅡ),which efficiently serves as the initial precursor to synthesize nitrogen-doped carbon nanorodsupported nickel phosphide nanoparticle(Ni_(2)P/N-C)*** density functional theory calculations and electrochemical results reveal that nitrogen doping can weaken the adsorption of hydrogen and the generated CO_(2)resulting in an enhancement of hydrogen evolution reaction(HER)and UEOR *** addition,N-doping can also promote the generation of Ni,which can further promote the UEOR and HER ***,the overpotential for the HER on Ni_(2)P/N-C-2h nanocomposites is only 201 m V at 10 mA cm,and the onset potential of the UEOR on NiP/NC-2h nanocomposites is only 1.34 ***,the Ni_(2)P/N-Cnanocomposites also show excellent long-term stability due to the introduction of nitrogen-doped carbon ***,the symmetric Ni_(2)P/N-C-2h||Ni_(2)P/N-C-2h urea electrolyzer requires 1.41 V of electrolysis voltage for urea electrolysis,which can be applied in energy-saving H_(2) production and environment purification.