La and Sr Composite Oxides-modified Graphite Felt for Aqueous Organic Redox Flow Batteries  

作　　者：WANG Hui LI Dan CHEN Liuping HAN Hongjing 

机构地区：[1]Mine Salt Comprehensive Utilization Center of Jiangsu Province,Chinasalt Jintan Co.,Ltd.,Changzhou 213200,P.R.China [2]Jiangsu Jiayi Thermal Power Co.,Ltd.,Changzhou 213200,P.R.China [3]School of QiDi(TUS)Renewable Energy,Qinghai University,Xining 810016,P.R.China

出　　处：《Chemical Research in Chinese Universities》2020年第6期1255-1260,共6页高等学校化学研究（英文版）

基　　金：Supported by the Natural Science Foundation of Jiangsu Province,China(No.BK20160297).

摘　　要：In this study,aqueous organic redox flow batteries(AORFBs)with NaCl as supporting electrolyte were investigated.In AORFBs,the chlorine evolution reaction should be retarded,not the hydrogen evolution reaction.To enhance the catalytic activity of the graphite fel(GF)electrode,the metal oxides were proposed to decorate on the GF surface.Among the loading oxides,significant enhancement of the mass transfer and reaction activity was obtained by the presence of LaSrOx nanoparticles.X-Ray photoclectron spectroscopy and contact angle measurements revealed that the content of oxygen-containing groups and the hydrophilicity were remarkably inereased.After the electrode assem-bled in the battery,the LaSrO/GF electrode presented huge enhancement of the battery performance,obviously increasing in the battery capacity and efficiency.At a current of 50 Am/cm^(2),the energy efficiency(EE)of the battery increased from 54.76%to 61.37%by the LaSrO/GF electrode.Furthermore,the cyclability of the system tested that no obviously fading was observed after 100 cycles,signifying the excellent stability of the LaSrOx/GF electrode.

关 键 词：Redox flow battery Organic active molecule Graphite felt La and Sr composite oxide 

分 类 号：TM912[电气工程—电力电子与电力传动]