Insights into the porosity and electrochemical performance of nano Li2FeSiO4 and Li2FeSiO4/C composite cathode materials

doi:10.1080/10667857.2021.1926812

IR > 石油化工学院

	Insights into the porosity and electrochemical performance of nano Li2FeSiO4 and Li2FeSiO4/C composite cathode materials
	Zhang, Qingtang1 ; Ji, Shaokang 1; Yan, Chao 1; Wang, Xiaomei2
	2022-07-29
发表期刊	MATERIALS TECHNOLOGY
ISSN	1066-7857
卷号	37 期号:9 页码:1195-1204
摘要	Nano-Li2FeSiO4/C composites (LFS/C-325 and LFS/C-221) and nano-Li2FeSiO4 (LFS-325 and LFS-221) with controlled porosity were prepared from the nano-fumed silicas with similar particle size and different porosity. N2 adsorption/desorption analysis reveals that the porosity of nano-Li2FeSiO4/C composites and nano-Li2FeSiO4 can be tuned by the choosing nano - fumed silica and LFS/C-325 possess the highest specific surface area among the four samples. XRD indicates that both LFS/C-325 and LFS/C-221 are crystalline powders with monoclinic Li2FeSiO4 of P21. FTIR spectra show that Li-O and Si-O bonds are existed in the four samples. SEM images demonstrate that LFS/C-325 and LFS/C-221 have similar particle sizes in the range of 20 similar to 25 nm, which are distinctly smaller than those of LFS-325 and LFS-221. LFS/C-325 features the smallest particle size and largest specific area, which enables LFS/C-325 to exhibit the best electrochemical performance. The initial discharge capacity of LFS/C-325 is as high as 185.2 mAh g(-1) at 0.1 C.
关键词	Li2FeSiO4 cathode lithium ion battery nano composite electrochemical performance
DOI	10.1080/10667857.2021.1926812
收录类别	SCIE ; SCOPUS ; EI
语种	英语
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000650985400001
出版者	TAYLOR & FRANCIS LTD
EI入藏号	20212110392748
EI主题词	Lithium compounds
EI分类号	549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals701.1 Electricity: Basic Concepts and Phenomena761 Nanotechnology801 Chemistry931.2 Physical Properties of Gases, Liquids and Solids951 Materials Science
来源库	WOS
引用统计	被引频次：7[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/148208
专题	石油化工学院材料科学与工程学院
通讯作者	Zhang, Qingtang; Wang, Xiaomei
作者单位	1.Lanzhou Univ Technol, Sch Petrochem Engn, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学; 材料科学与工程学院
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Zhang, Qingtang,Ji, Shaokang,Yan, Chao,et al. Insights into the porosity and electrochemical performance of nano Li2FeSiO4 and Li2FeSiO4/C composite cathode materials[J]. MATERIALS TECHNOLOGY,2022,37(9):1195-1204.
APA	Zhang, Qingtang,Ji, Shaokang,Yan, Chao,&Wang, Xiaomei.(2022).Insights into the porosity and electrochemical performance of nano Li2FeSiO4 and Li2FeSiO4/C composite cathode materials.MATERIALS TECHNOLOGY,37(9),1195-1204.
MLA	Zhang, Qingtang,et al."Insights into the porosity and electrochemical performance of nano Li2FeSiO4 and Li2FeSiO4/C composite cathode materials".MATERIALS TECHNOLOGY 37.9(2022):1195-1204.