Nanostructured N-doped carbon materials derived from expandable biomass with superior electrocatalytic performance towards V^(2+)/V^(3+) redox reaction for vanadium redox flow battery

作     者：Yingqiao Jiang Mengchen Du Gang Cheng Peng Gao Tingting Dong Jing Zhou Xiaojian Feng Zhangxing He Yuehua Li Lei Dai Wei Meng Ling Wang Yingqiao Jiang;Mengchen Du;Gang Cheng;Peng Gao;Tingting Dong;Jing Zhou;Xiaojian Feng;Zhangxing He;Yuehua Li;Lei Dai;Wei Meng;Ling Wang

作者机构：School of Chemical EngineeringNorth China University of Science and TechnologyTangshan 063009China Hebei Province Key Laboratory of Photocatalytic and Electrocatalytic Materials for EnvironmentNorth China University of Science and TechnologyTangshan 063009China 

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

年 卷 期：2021年第30卷第8期

页      面：706-714,I0014页

核心收录：

学科分类：0820[工学-石油与天然气工程] 0808[工学-电气工程] 081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 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(No.51772097) Hebei Natural Science Fund for Distinguished Young Scholar(No.E2019209433) Training Program of Innovation and Entrepreneurship for Undergraduates(No.X2018156,North China University of Science and Technology) 

主　　题：Vanadium redox flow battery Electrocatalyst Biomass Expandable characteristic Improved electrochemical kinetics 

摘      要：Vanadium redox flow battery(VRFB)is one of the most promising large-scale energy storage systems,which ranges from kilowatt to ***,poor electrochemical activity of electrode for two redox couples still restricts the extensive applications of *** with V^(2+)/V^(3+)redox reaction,V^(2+)/V^(3+)reaction plays a more significant role in voltage loss of VRFB owing to slow heterogeneous electron transfer ***,N-doped carbon materials derived from scaphium scaphigerum have been developed as negative electrocatalyst by hydrothermal carbonization and high-temperature nitridation *** undoped carbon material hardly has electrocatalytic ability for V^(2+)/V^(3+)*** on this,N-doped carbon materials with urea as nitrogen source exhibit excellent electrocatalytic *** the material nitrided at 850°C(SSC/N-850)exhibits the best performance among those from700 to 1000℃.SSC/N-850 can accelerate the electrode process including V^(2+)/V^(3+)reaction and mass transfer of active ions due to the large reaction place,more active sites,and good *** effect of catalyst on comprehensive performance of cell was ***/N-850 can improve the charge-discharge performance *** of SSC/N-850 can lessen the electrochemical polarization of cell,further resulting in increased discharge capacity and energy *** capacity and energy efficiency increase by 81.5%and 9.8%by using SSC/N-850 as negative catalyst at 150 m A cm^(-2),*** study reveals that the developed biomass-derived carbon materials are the low-cost and efficient negative electrocatalyst for VRFB system.