Waste activated carbon transformed to electrode of supercapacitor through combining with Co(OH)(2)

doi:10.1016/j.electacta.2020.137475

IR > 石油化工学院

	Waste activated carbon transformed to electrode of supercapacitor through combining with Co(OH)(2)
	Xu, Cheng; Chen, Yong; Ma, Yannan; Huang, Jiandi; Zhao, Jiang; Xu, Hui
	2021-01-20
发表期刊	ELECTROCHIMICA ACTA
ISSN	0013-4686
卷号	367 页码:-
摘要	Activated carbon (AC) is a multifunctional material. On the one hand, it is used as adsorbent to remove pollutants in wastewater, on the other hand, it is a preferred electrode for supercapacitors. Herein, we fabricate a hybrid electrode based on Co(OH)(2) and waste AC which is supposed to discard after removing methylene blue (MB) from water. Scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy demonstrate AC/MB/Co(OH)(2) nanocomposites are successfully synthesized via precipitation method. Furthermore, the specific surface area of AC/MB/Co(OH)(2) is dramatically improved compared to Co(OH)(2). Cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectrum (EIS) tests suggest that the specific capacity of AC/MB/Co(OH)(2) is 447 C g(-1) at a current density of 1 A g(-1) in 3M KOH, which is higher than that of Co(OH)(2) (329 C g(-1)) or AC/Co(OH)(2) (347 C g(-1)). The result indicates that MB adsorbed on AC can provide pseudo-capacity for the hybrid electrode. The assembled asymmetric supercapacitor has a power density of 400 W kg(-1) at an energy density of 18 Wh kg(-1) and can power a light emitting diodes (LED) easily. Thus, this strategy makes it possible to further use waste AC as the electrode of supercapacitor, which avoids secondary pollution that comes from the adsorbents. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	METHYLENE-BLUE DYE HIGH-PERFORMANCE COBALT HYDROXIDE GRAPHENE OXIDE ASYMMETRIC SUPERCAPACITORS FACILE SYNTHESIS DOPED GRAPHENE ORGANIC-DYES NI-FOAM ADSORPTION
DOI	10.1016/j.electacta.2020.137475
收录类别	EI ; SCOPUS ; SCIE
语种	英语
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
WOS记录号	WOS:000607621100004
出版者	Elsevier Ltd
EI入藏号	20204909586260
EI主题词	Electric discharges
EI分类号	701.1 Electricity: Basic Concepts and Phenomena - 801.4.1 Electrochemistry - 802.3 Chemical Operations - 804 Chemical Products Generally - 804.2 Inorganic Compounds
来源库	WOS
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/147333
专题	石油化工学院
通讯作者	Chen, Yong; Xu, Hui
作者单位	Lanzhou Univ Technol, Coll Petrochem Engn, Lanzhou 730050, Peoples R China
第一作者单位	石油化工学院
通讯作者单位	石油化工学院
第一作者的第一单位	石油化工学院
推荐引用方式 GB/T 7714	Xu, Cheng,Chen, Yong,Ma, Yannan,et al. Waste activated carbon transformed to electrode of supercapacitor through combining with Co(OH)(2)[J]. ELECTROCHIMICA ACTA,2021,367:-.
APA	Xu, Cheng,Chen, Yong,Ma, Yannan,Huang, Jiandi,Zhao, Jiang,&Xu, Hui.(2021).Waste activated carbon transformed to electrode of supercapacitor through combining with Co(OH)(2).ELECTROCHIMICA ACTA,367,-.
MLA	Xu, Cheng,et al."Waste activated carbon transformed to electrode of supercapacitor through combining with Co(OH)(2)".ELECTROCHIMICA ACTA 367(2021):-.