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

doi:10.1080/10667857.2021.1926812

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Insights into the porosity and electrochemical performance of nano Li2FeSiO4 and Li2FeSiO4/C composite cathode materials
	Zhang, Qingtang 1; Ji, Shaokang 1; Yan, Chao 1; Wang, Xiaomei 2
刊名	MATERIALS TECHNOLOGY
	2021
卷号	37 期号:9 页码:1195-1204
关键词	Li2FeSiO4 cathode lithium ion battery nano composite electrochemical performance
ISSN号	1066-7857
DOI	10.1080/10667857.2021.1926812
英文摘要	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.
WOS研究方向	Materials Science
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000650985400001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148208]
专题	石油化工学院材料科学与工程学院
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
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,2021,37(9):1195-1204.
APA	Zhang, Qingtang,Ji, Shaokang,Yan, Chao,&Wang, Xiaomei.(2021).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(2021):1195-1204.