Modified supramolecular carboxylated chitosan as hydrogel electrolyte for quasi-solid-state supercapacitors

doi:10.1016/j.jpowsour.2019.227174

	Modified supramolecular carboxylated chitosan as hydrogel electrolyte for quasi-solid-state supercapacitors
	Yang, Hezhen 2; Ji, Xiwei 2; Tan, Yongtao 1,2; Liu, Ying 1,2; Ran, Fen 1,2
刊名	JOURNAL OF POWER SOURCES
	2019-11-30
卷号	441
关键词	Carboxylated chitosan Hydrogel electrolyte Graft copolymerization Quasi-solid-state supercapacitors
ISSN号	0378-7753
DOI	10.1016/j.jpowsour.2019.227174
英文摘要	Hydrogel-based electrolytes are becoming generally more preferred for electrolyte materials for quasi-solidstate/flexible supercapacitors due to their shape-controlled, high ionic conductivity, no liquid leakage, certain mechanical strength, and flexibility. Here, we develop a modified supramolecular carboxylated chitosan hydrogel electrolyte (CYCTS-g-PAM-Li2SO4) synthesized through a free radical graft copolymerization of acrylamide monomers and chemical crosslinking. Compared with PAM-based hydrogel electrolyte (PAM-Li2SO4), the modified hydrogel electrolyte of CYCTS-g-PAM-Li2SO4 exhibits better performance including higher ionic conductivity (1.74 x 10(-2) S cm(-1)), better electrolyte absorbability (280%) as well as improved mechanical properties (2.25 MPa). A symmetric quasi-solid-state EDLC (electronic double layer capacitor) by sandwiching activated carbon film electrodes with CYCTS-g-PAM-Li2SO4 as the electrolyte and carbon cloths as the current collectors. Notably, the device shows a wide potential window of 0-1.4 V and delivers a high energy density of 8.7 Wh kg(-1) at a power density of 350.3 W kg(-1). Interestingly, two devices connected in series can light an LED lamp. To our knowledge, this is the first time that reported the modified carboxylated chitosan hydrogel electrolyte for quasi-solid-state supercapacitors, which has application potentials for the modified carboxylated chitosan as hydrogel electrolyte for quasi-solid-state, flexible, and portable energy storage devices.
资助项目	National Natural Science Foundation of China[51203071][51363014][51463012][51763014] ; China Postdoctoral Science Foundation[2014M552509][2015T81064] ; Natural Science Funds of the Gansu Province[1506RJZA098]
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000494885800031
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/64265]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Ran, Fen
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Yang, Hezhen,Ji, Xiwei,Tan, Yongtao,et al. Modified supramolecular carboxylated chitosan as hydrogel electrolyte for quasi-solid-state supercapacitors[J]. JOURNAL OF POWER SOURCES,2019,441.
APA	Yang, Hezhen,Ji, Xiwei,Tan, Yongtao,Liu, Ying,&Ran, Fen.(2019).Modified supramolecular carboxylated chitosan as hydrogel electrolyte for quasi-solid-state supercapacitors.JOURNAL OF POWER SOURCES,441.
MLA	Yang, Hezhen,et al."Modified supramolecular carboxylated chitosan as hydrogel electrolyte for quasi-solid-state supercapacitors".JOURNAL OF POWER SOURCES 441(2019).