A new catalyst for urea oxidation: NiCo2S4 nanowires modified 3D carbon sponge

作     者：Biaopeng Li Congying Song Jianjun Rong Jing Zhao Hong-En Wang Ping Yang Ke Ye Kui Cheng Kai Zhu Jun Yan Dianxue Cao Guiling Wang Biaopeng Li;Congying Song;Jianjun Rong;Jing Zhao;Hong-En Wang;Ping Yang;Ke Ye;Kui Cheng;Kai Zhu;Jun Yan;Dianxue Cao;Guiling Wang

作者机构：Key Laboratory of Superlight Materials and Surface Technology of Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001HeilongjiangChina State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of TechnologyWuhan 430070HubeiChina 

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

年 卷 期：2020年第29卷第11期

页      面：195-205页

核心收录：

学科分类：0808[工学-电气工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the financial support of this study by the Ph.D.Student Research and Innovation Fund of the Fundamental Research Funds for the Central Universities(grant number GK6530260034) the National Natural Science Foundation of China(grant numbers:51572052) 

主　　题：Carbon sponge Direct urea fuel cell Electrocatalyst NiCo2S4 nanowires Urea oxidation 

摘      要：Urea oxidation is a significant reaction for utilizing urea-rich wastewater or human urine as sustainable power sources which can ease the water eutrophication while generate electricity. A direct urea-hydrogen peroxide fuel cell is a new kind of fuel cell employing urea as fuel and hydrogen peroxide as oxidant which possesses a larger cell voltage. Herein, this work tries to promote the kinetics process of urea oxidation by preparing low-cost and high-efficient NiCo2S4 nanowires modified carbon sponge electrode. The carbon sponge used in this work with a similar three-dimensional multi-channel structure to Ni foam, is prepared by carbonizing recycled polyurethane sponge which is also a process of recycling waste. The performance of the prepared catalyst in an alkaline solution is investigated in a three-electrode *** the introduction of Co element to the catalyst, a reduced initial urea oxidation potential and a high performance are obtained. Furthermore, a direct urea-hydrogen peroxide fuel cell is assembled using the NiCo2S4 nanowires modified carbon sponge anode. Results indicate that the prepared catalyst provides a chance to solve the current problems that hinder the development of urea electrooxidation(high initial urea oxidation potential, low performance, and high electrode costs).