Earth-abundant CuFeS_(2) nanocrystals@graphite felt electrode for high performance aqueous polysulfide/iodide redox flow batteries
作者机构：School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityShanghai200240China Nanotechnology and Catalysis Research Centre(NANOCAT)Institute for Advanced Studies(IAS)University of Malaya3rd FloorBlock A50603 Kuala LumpurMalaysia Key Laboratory of Green and High-end Utilization of Salt Lake ResourcesChinese Academy of SciencesChina
出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)
年 卷 期：2024年第43卷第1期
页 面：16-23页
核心收录：
学科分类：0808[工学-电气工程] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学]
基 金：supported by National Natural Science Foundation of China(22171180) Science and Technology Commission of Shanghai Municipality(20520741400 and 20520710400) Science and Technology Major Project of Shanghai
主 题：CuFeS_(2) Hot injection Flow battery Nanomaterial DFT
摘 要：Due to their high energy density and low price,aqueous polysulfide/iodide redox flow batteries are appealing for scalable energy ***,the greatest barrier to their practical uses is the low electrochemical kinetics of the redox reactions of polysulfide ions on graphite electrodes,which often limit their energy efficiency and power *** this study,the CuFeS_(2)nanomaterial was successfully synthesized through the hot injection method,and CuFeS_(2)nanomaterials were uniformly coated onto the surfaces and sandwiched into graphite felt(GF);this process can significantly boost the electrocatalytic activities of S^(2-)/S^(2-)_(x)redox reactions by improving the charge transfer process,which has been proven by the electrochemical measurement and density functional theory(DFT)*** polysulfide-iodide flow battery,with GF-CuFeS_(2)serving as the negative electrode,can achieve a high energy efficiency of 79.6%at 20 mA/cm^(2),a power density of 50.7 mW/cm^(2),and a stable energy efficiency retention of 87.0%after 180 cycles.
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