Bi2O3 particles embedded in carbon matrix as high-performance anode materials for potassium ion batteries

doi:10.1016/j.jpowsour.2022.232140

	Bi2O3 particles embedded in carbon matrix as high-performance anode materials for potassium ion batteries
	Tong, Huigang 1,2; Chen, Shi 1,2; Tu, Jinwei 1,2; Zeng, Xuehao 1,2; Wang, Changlai 1,2; Wang, Pengcheng 1,2; Chen, Qianwang 1,2,3
刊名	JOURNAL OF POWER SOURCES
	2022-11-30
卷号	549
关键词	Potassium-ion batteries Carbon matrix Potassium storage mechanism Volume expansion
ISSN号	0378-7753
DOI	10.1016/j.jpowsour.2022.232140
通讯作者	Chen, Qianwang(cqw@ustc.edu.cn)
英文摘要	Potassium-ion batteries (PIBs) are expected to replace lithium-ion batteries (LIBs) as the next generation of electrochemical energy storage products. However, due to the large radius of potassium ion, the anode material undergoes drastic volume expansion during the battery cycle, resulting in performance degradation. Bi2O3 is a kind of material with high theoretical specific capacity, but there is seldom research in potassium-ion batteries. Herein, we design a Bi2O3 nanomaterial embedded in a carbon matrix. The introduction of carbon matrix can not only improve the electronic conductivity of the material, but also alleviate the volume expansion of bismuth oxide. After 100 cycles of 50 mA g-1, its specific charging capacity is 314 mA h g-1, which shows good cycle stability. By ex situ X-ray diffraction, cyclic voltammetry and charge-discharge curves, it is confirmed that the mechanism of potassium ion storage on Bi2O3@C electrode is the combination of transformation reaction mechanism and alloying reaction mechanism.
资助项目	National Natural Science Founda- tion ; National Key R & D Program of China ; Fundamental Research Funds for the Central Universities ; [22072140] ; [51772283] ; [2021YFA1600202] ; [WK2060000032]
WOS关键词	HIGH-CAPACITY ; ELECTRODES ; GRAPHENE
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000863156400001
资助机构	National Natural Science Founda- tion ; National Key R & D Program of China ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129327]
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, Qianwang
作者单位	1.Univ Sci & Technol China, Dept Mat Sci & Engn, Hefei 230026, Peoples R China 2.Univ Sci & Technol China, Hefei Natl Res Ctr Phys Sci Microscale, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, High Magnet Field Lab, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Tong, Huigang,Chen, Shi,Tu, Jinwei,et al. Bi2O3 particles embedded in carbon matrix as high-performance anode materials for potassium ion batteries[J]. JOURNAL OF POWER SOURCES,2022,549.
APA	Tong, Huigang.,Chen, Shi.,Tu, Jinwei.,Zeng, Xuehao.,Wang, Changlai.,...&Chen, Qianwang.(2022).Bi2O3 particles embedded in carbon matrix as high-performance anode materials for potassium ion batteries.JOURNAL OF POWER SOURCES,549.
MLA	Tong, Huigang,et al."Bi2O3 particles embedded in carbon matrix as high-performance anode materials for potassium ion batteries".JOURNAL OF POWER SOURCES 549(2022).