Exploring the effects of temperature-driven phase transition on supercapacitive performance of cobalt diselenide

doi:10.1016/j.jpowsour.2022.231683

IR > 理学院

	Exploring the effects of temperature-driven phase transition on supercapacitive performance of cobalt diselenide
	Li, Mingjie 1,2; Liu, Weizhe 1; Ju, Jiaming 1; Xie, Lixiang 1; Chen, Yuhong1 ; Jiang, Jinlong 2
	2022-09-01
发表期刊	JOURNAL OF POWER SOURCES
ISSN	0378-7753
卷号	541
摘要	Recently, doping-induced phase transition of cobalt diselenide have been explored extensively for applications in the electrocatalysis, lithium-ion batteries, and sodium-ion batteries, however, there are very few works on understanding of the relationship between phase transition and supercapacitor performance up to now. Herein, we report a temperature-driven phase transformation strategy to synthesize metastable orthorhombic o-CoSe2 and stable c-CoSe2 by the thermal induced in-situ reaction of cobalt precursor and selenium powder. The o-CoSe2 shows a higher specific capacity (244.2 mAh g(- 1) at 1.0 A g(-1)), while c-CoSe2 shows a better cycling stability (103.0% capacity retention after 2000 cycles at 10.0 A g(-1)). Combing density functional theory (DFT) calculations and experimental results, we explain the unique effects of phase structure on supercapacitive perfor-mance. Furthermore, a hybrid supercapacitor of o-CoSe2//AC delivers a high energy density of 79.1 Wh kg(-1) at a power density of 850.0 W kg(-1), which suggests the prospects of practical application as energy storage device. Our work provides useful guidance for the design of cobalt diselenide based materials for supercapacitors.
关键词	Cobalt diselenide Phase transition Supercapacitor Density function theory
DOI	10.1016/j.jpowsour.2022.231683
收录类别	SCIE ; EI
语种	英语
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000809641200002
出版者	ELSEVIER
EI入藏号	20222412208273
EI主题词	Cobalt compounds
EI分类号	531.1 Metallurgy641.1 Thermodynamics702.1.2 Secondary Batteries704.1 Electric Components801.4.1 Electrochemistry802.2 Chemical Reactions922.1 Probability Theory931.3 Atomic and Molecular Physics931.4 Quantum Theory ; Quantum Mechanics
来源库	WOS
引用统计	被引频次：3[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/158864
专题	理学院
通讯作者	Jiang, Jinlong
作者单位	1.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China; 2.Shandong Lab Yantai Adv Mat & Green Mfg, Yantai 264006, Peoples R China
第一作者单位	理学院
第一作者的第一单位	理学院
推荐引用方式 GB/T 7714	Li, Mingjie,Liu, Weizhe,Ju, Jiaming,et al. Exploring the effects of temperature-driven phase transition on supercapacitive performance of cobalt diselenide[J]. JOURNAL OF POWER SOURCES,2022,541.
APA	Li, Mingjie,Liu, Weizhe,Ju, Jiaming,Xie, Lixiang,Chen, Yuhong,&Jiang, Jinlong.(2022).Exploring the effects of temperature-driven phase transition on supercapacitive performance of cobalt diselenide.JOURNAL OF POWER SOURCES,541.
MLA	Li, Mingjie,et al."Exploring the effects of temperature-driven phase transition on supercapacitive performance of cobalt diselenide".JOURNAL OF POWER SOURCES 541(2022).