NIMTE OpenIR  > 2018专题
Scalable in Situ Synthesis of Li4Ti5O12/Carbon Nanohybrid with Supersmall Li4Ti5O12 Nanoparticles Homogeneously Embedded in Carbon Matrix
Zheng, Luyao; Wang, Xiaoyan; Xia, Yonggao; Xia, Senlin; Metwalli, Ezzeldin; Qiu, Bao; Ji, Qing; Yin, Shanshan; Xie, Shuang; Fang, Kai; Liang, Suzhe; Wang, Meimei; Zuo, Xiuxia; Xiao, Ying; Liu, Zhaoping; Zhu, Jin; Mueller-Buschbaum, Peter; Cheng, Ya-Jun
2018
Source PublicationACS APPLIED MATERIALS & INTERFACES
Volume10Issue:3Pages:2591-2602
AbstractLi4Ti5O12 (LTO) is regarded as a promising lithium-ion battery anode due to its stable cyclic performance and reliable operation safety. The moderate rate performance originated from the poor intrinsic electron and lithium-ion conductivities of the LTO has significantly limited its wide applications. A facile scalable synthesis of hierarchical Li4Ti5O12/C nanohybrids with supersmall LTO nanoparticles (ca. 17 nm in diameter) homogeneously embedded in the continuous submicrometer-sized carbon matrix is developed. Difunctional methacrylate monomers are used as solvent and carbon source to generate TiO2/C nanohybrid, which is in situ converted to LTO/C via a solid-state reaction procedure. The structure, morphology, crystallinity, composition, tap density, and electrochemical performance of the LTO/C nanohybrid are systematically investigated. Comparing to the control sample of the commercial LTO composited with carbon, the reversible specific capacity after 1000 cycles at 175 mA g(-1) and rate performance at high current densities (875, 1750, and 3500 mA g(-1)) of the Li4Ti5O12/C nanohybrid have been significantly improved. The enhanced electrochemical performance is due to the unique structure feature, where the supersmall LTO nanoparticles are homogeneously embedded in the continuous carbon matrix. Good tap density is also achieved with the LTO/C nanohybrid due to its hierarchical micro-/nanohybrid structure, which is even higher than that of the commercial LTO powder.
KeywordLithium-ion Batteries Enhanced Rate Performance Anode Material Electrochemical Performance Tio2 Nanoparticles Spinel Li4ti5o12 Storage Size Nanocomposites Intercalation
Subject AreaChemistry ; Electrochemistry ; Energy & Fuels
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/16862
Collection2018专题
Recommended Citation
GB/T 7714
Zheng, Luyao,Wang, Xiaoyan,Xia, Yonggao,et al. Scalable in Situ Synthesis of Li4Ti5O12/Carbon Nanohybrid with Supersmall Li4Ti5O12 Nanoparticles Homogeneously Embedded in Carbon Matrix[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(3):2591-2602.
APA Zheng, Luyao.,Wang, Xiaoyan.,Xia, Yonggao.,Xia, Senlin.,Metwalli, Ezzeldin.,...&Cheng, Ya-Jun.(2018).Scalable in Situ Synthesis of Li4Ti5O12/Carbon Nanohybrid with Supersmall Li4Ti5O12 Nanoparticles Homogeneously Embedded in Carbon Matrix.ACS APPLIED MATERIALS & INTERFACES,10(3),2591-2602.
MLA Zheng, Luyao,et al."Scalable in Situ Synthesis of Li4Ti5O12/Carbon Nanohybrid with Supersmall Li4Ti5O12 Nanoparticles Homogeneously Embedded in Carbon Matrix".ACS APPLIED MATERIALS & INTERFACES 10.3(2018):2591-2602.
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