Conductivity and adsorbability synergistically improved electrode for high-performance viologen based aqueous organic flow batteries

doi:10.1016/j.cej.2023.147799

IMR OpenIR

	Conductivity and adsorbability synergistically improved electrode for high-performance viologen based aqueous organic flow batteries
	Wang, Diandian 1; Xu, Zeyu 2; Zhao, Haiyang 3; Li, Xiaojia 3; Qin, Xindong 1; Song, Zongren 1; Fang, Dawei 1; Jing, Minghua 1
通讯作者	Fang, Dawei(dwfang@lnu.edu.cn) ; Jing, Minghua(mhjing@lnu.edu.cn)
	2024
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
卷号	479 页码:11
摘要	In this paper, a series of heteroatom doping graphite felt electrodes are prepared by simple precursor impreg-nation and heat treatment, their application properties as electrode materials for viologen based aqueous organic redox flow batteries (AORFBs) are studied systematically. Elaborate physical, electrochemical characterization and density functional theory (DFT) calculation results indicate that the P-doped GF (P-GF) electrode with higher adsorption energy for viologen molecules, better conductivity and larger electrochemical reactive surface area exhibits better electrochemical performance towards viologen. The charge and discharge performance of the AORFBs with BTMAP-vi as anolyte and Nme-TEMPO as catholyte are investigated to verify the practical appli-cation performance of the P-GF electrode material. The AORFB with P-GF as electrodes shows lower polarization overpotential and higher discharge capacity at different current densities than that using pristine GF as elec-trodes. Specifically, the VE and EE of the BTMAP-vi/Nme-TEMPO AORFBs with P-GF as electrodes are 84.76 % and 82.85 % at the current density of 60 mA cm- 2, 5.34 % and 6.18 % higher than that of the battery with GF as electrodes respectively. After 200 charge and discharge cycles, the capacity retention rate of the P-GF battery increases by more than 20 %, suggesting the better cycle stability. Besides, the peak power density of the P-GF battery achieves 120 mW cm-2, which is much higher than that of the GF battery (85 mW cm-2). The results of this work demonstrate that enhancing the conductivity and adsorption energy of the electrodes should be more effective to improve the performance of viologen based AORFBs, because the electrochemical reactivity of its active electrolytes has been excellent enough.
关键词	Viologen AORFBs Graphite felt electrode Heteroatom doping Conductivity
资助者	Department of Science and Technology of Liaoning Province (CN) ; Project of Education Department of Liaoning Province ; National Natural Science Foundation of China
DOI	10.1016/j.cej.2023.147799
收录类别	SCI
语种	英语
资助项目	Department of Science and Technology of Liaoning Province (CN)[2022-BS-115] ; Project of Education Department of Liaoning Province[LJKMZ20220445] ; Project of Education Department of Liaoning Province[LJKZZ20220018] ; National Natural Science Foundation of China[22173039]
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:001135305300001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/183378
专题	中国科学院金属研究所
通讯作者	Fang, Dawei; Jing, Minghua
作者单位	1.Liaoning Univ, Inst Rare & Scattered Elements, Coll Chem, Shenyang 110036, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.China Med Univ, Shenyang 110122, Peoples R China
推荐引用方式 GB/T 7714	Wang, Diandian,Xu, Zeyu,Zhao, Haiyang,et al. Conductivity and adsorbability synergistically improved electrode for high-performance viologen based aqueous organic flow batteries[J]. CHEMICAL ENGINEERING JOURNAL,2024,479:11.
APA	Wang, Diandian.,Xu, Zeyu.,Zhao, Haiyang.,Li, Xiaojia.,Qin, Xindong.,...&Jing, Minghua.(2024).Conductivity and adsorbability synergistically improved electrode for high-performance viologen based aqueous organic flow batteries.CHEMICAL ENGINEERING JOURNAL,479,11.
MLA	Wang, Diandian,et al."Conductivity and adsorbability synergistically improved electrode for high-performance viologen based aqueous organic flow batteries".CHEMICAL ENGINEERING JOURNAL 479(2024):11.