Mesoporous Li2FeSiO4/C nanocomposites with enhanced performance synthesized from fumed nano silica
Zhang, Qingtang; Yan, Chao; Guo, Junhong; Wang, Xiaomei
2018-09
发表期刊IONICS
ISSN0947-7047
卷号24期号:9页码:2555-2563
摘要Mesoporous Li2FeSiO4/C nanocomposites (LFS-FNS and LFS-NS) were prepared from fumed nano silica (FNS) and nano silica (NS) through facile solid-state reactions, respectively. XRD analysis indicates that the crystalline structures of LFS-FNS and LFS-NS are indexed to monoclinic Li2FeSiO4 of P2(1). SEM results prove that the particle size of LFS-FNS and FNS (25 similar to 40 nm) is smaller than that of LFS-NS and NS, revealing the particle size of Li2FeSiO4/C nanocomposites can be tuned by choosing different silica. TEM further indicates Li2FeSiO4 nanoparticles are uniformly dispersed in the amorphous carbon networking of LFS-FNS. Pore structure analysis indicates the external surface areas of LFS-FNS as well as LFS-NS are 51.4 and 36.1 m(2) g(-1), indicating the pore properties of mesoporous Li2FeSiO4/C nanocomposites can be controlled by using different silica as silicon resource. The reduced particle size and high external surface area shorten the lithium-ion diffusion path and make LFS-FNS possess better electrochemical performance over LFS-NS. The discharge capacity of LFS-FNS is as high as 172 mA h g(-1) at 0.1 C.
关键词Fumed nano silica Li2FeSiO4 Mesoporous materials Nanostructured materials
DOI10.1007/s11581-017-2399-9
收录类别SCI
语种英语
资助项目Gansu Provincial Science Fund[1606RJZA180] ; National Nature Science Foundation of China[21466020]
WOS研究方向Chemistry ; Electrochemistry ; Physics
WOS类目Chemistry, Physical ; Electrochemistry ; Physics, Condensed Matter
WOS记录号WOS:000441555200005
出版者SPRINGER HEIDELBERG
引用统计
被引频次:9[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/32472
专题石油化工学院
材料科学与工程学院
省部共建有色金属先进加工与再利用国家重点实验室
通讯作者Wang, Xiaomei
作者单位Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Sch Petrochem Engn, Lanzhou 730050, Gansu, Peoples R China
第一作者单位省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式
GB/T 7714
Zhang, Qingtang,Yan, Chao,Guo, Junhong,et al. Mesoporous Li2FeSiO4/C nanocomposites with enhanced performance synthesized from fumed nano silica[J]. IONICS,2018,24(9):2555-2563.
APA Zhang, Qingtang,Yan, Chao,Guo, Junhong,&Wang, Xiaomei.(2018).Mesoporous Li2FeSiO4/C nanocomposites with enhanced performance synthesized from fumed nano silica.IONICS,24(9),2555-2563.
MLA Zhang, Qingtang,et al."Mesoporous Li2FeSiO4/C nanocomposites with enhanced performance synthesized from fumed nano silica".IONICS 24.9(2018):2555-2563.
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