Universal construction of novel asymmetric pseudocapacitors by poly-ILs functionalized graphene with electrochemical redox activity

doi:10.1016/j.est.2025.115665

IMR OpenIR

	Universal construction of novel asymmetric pseudocapacitors by poly-ILs functionalized graphene with electrochemical redox activity
	Jing, Minghua 1,2; Yu, Shiju 2; Liu, Zhuling 2; Zhang, Zijun 2; Zhang, Yue 4; Liu, Jianguo 3; Ma, Xiaoxue 2; Fang, Dawei 1
通讯作者	Liu, Jianguo(jgliu@imr.ac.cn) ; Ma, Xiaoxue(mxx_1985@163.com) ; Fang, Dawei(dwfang@lnu.edu.cn)
	2025-03-30
发表期刊	JOURNAL OF ENERGY STORAGE
ISSN	2352-152X
卷号	113 页码:13
摘要	Graphene-pseudocapacitor composites are widely used in capacitor electrode materials because of their high conductivity, large specific surface area and high specific capacitance. How to restrain the lamellar stacking and ensure the structural stability of pseudocapacitor materials is a key problem that needs to be solved. In this work, the imidazolyl polymer ionic liquids (PILs) have been combined with graphene by electrostatic attraction and it-it interaction, which effectively inhibits the stacking of graphene nanosheets. In addition, the anion exchange property of PILs is used to replace Br- with inorganic/organic anions with electrochemical redox activity (IEA/ OEA), which effectively solve the problem of phase transformation and structural stability of traditional metalbased pseudocapacitive materials. Electroactive anions with different redox potentials are selected to construct the positive and negative electrode materials of supercapacitors, which are respectively inorganic group (positive: [Fe(CN)6]4-/PILs-rGO and negative: [PWA]3-/PILs-rGO) and organic group (positive: [BQDS]2- /PILs-rGO and negative: [AQS]- /PILs-rGO). The composition, structure and surface properties of these composite materials are studied systematically. The feasibility and universality of this strategy to develop the battery-type pseudocapacitor without phase change is verified by constructing the asymmetric capacitors, and the charge-discharge performance has been investigated systematically. As a result, the asymmetric capacitors exhibit significantly higher specific capacitance values than the symmetric capacitor assembled with PILs-rGO as both positive and negative electrode materials, and exhibit lower self-discharge rate and good cycle stability. The universal method of constructing electroactive graphene electrode materials by recombination of PILs and rGO and simple anion exchange provides a new way to construct a novel supercapacitor system.
关键词	Polymeric ionic liquid Graphene Electrochemical redox activity Supercapacitors
资助者	National Natural Science Foundation of China ; Foundation of Liaoning Province Education Administration ; Liaoning University ; Liaoning Revitalization Talents Program ; Key Technologies R & D Program of Liaoning Provincial Education Department
DOI	10.1016/j.est.2025.115665
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52203040] ; National Natural Science Foundation of China[22403039] ; Foundation of Liaoning Province Education Administration[LJKMZ20220445] ; Foundation of Liaoning Province Education Administration[JYTMS20230760] ; Liaoning University[LJKLJ202411] ; Liaoning Revitalization Talents Program[XLYC2202040] ; Key Technologies R & D Program of Liaoning Provincial Education Department[LJKZZ20220018] ; [22173039]
WOS研究方向	Energy & Fuels
WOS类目	Energy & Fuels
WOS记录号	WOS:001423117900001
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/180033
专题	中国科学院金属研究所
通讯作者	Liu, Jianguo; Ma, Xiaoxue; Fang, Dawei
作者单位	1.Liaoning Univ, Inst Rare & Scattered Elements Chem, Shenyang 110036, Peoples R China 2.Liaoning Univ, Coll Chem, Shenyang 110036, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Liaodong Univ, Sch Fash & Text, Dandong 118003, Peoples R China
推荐引用方式 GB/T 7714	Jing, Minghua,Yu, Shiju,Liu, Zhuling,et al. Universal construction of novel asymmetric pseudocapacitors by poly-ILs functionalized graphene with electrochemical redox activity[J]. JOURNAL OF ENERGY STORAGE,2025,113:13.
APA	Jing, Minghua.,Yu, Shiju.,Liu, Zhuling.,Zhang, Zijun.,Zhang, Yue.,...&Fang, Dawei.(2025).Universal construction of novel asymmetric pseudocapacitors by poly-ILs functionalized graphene with electrochemical redox activity.JOURNAL OF ENERGY STORAGE,113,13.
MLA	Jing, Minghua,et al."Universal construction of novel asymmetric pseudocapacitors by poly-ILs functionalized graphene with electrochemical redox activity".JOURNAL OF ENERGY STORAGE 113(2025):13.