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Electrochemical lithium storage of Li4Ti5O12/NiO nanocomposites for high-performance lithium-ion battery anodes
Zhang, Congcong1; Shao, Dan2; Gao, Qiongzhi1; Lu, Yuheng1; Liu, Zuotao1; Yu, Xiaoyuan1; Fang, Yueping1; Chen, Dongyang3
2015-06-01
发表期刊JOURNAL OF SOLID STATE ELECTROCHEMISTRY
卷号19期号:6页码:1859-1866
摘要Li4Ti5O12/NiO (LTO/NiO) composites with various NiO contents were prepared successfully as anode materials for high-performance lithium-ion battery. The preparation procedure consisted of high-energy ball milling, high-temperature calcination, and solution coating in succession. Several techniques such as X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), galvanostatic charge-discharge, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) were applied to fully investigate the micromorphology, composition structure, and electrochemical performances of the LTO/NiO composites. It was found that all the LTO/NiO composites showed higher discharge capacity than the pure LTO anode within the representative 20 cycles. The LTO/5 wt.% NiO, which had the largest specific surface area of 2.1229 m(2) g(-1) among all the LTO/NiO composites, delivered a capacity of 203 mAh g(-1) in a voltage window of 0.5-3.0 V at 1 C rate and retained a capacity of 176 mAh g(-1) after 100 cycles. The CV and EIS analysis indicated that the charge/discharge processes of LTO/NiO composites included the Li+ diffusion into or out of LTO phase and the redox reaction of NiO phase. The results demonstrate that the surface modification of LTO with small amounts of NiO nanoparticles can decrease the overall charge transfer resistance by forming in situ the electron-conductive Ni, leading to the improved electrochemical behavior of the composites.
文章类型Article
关键词Li4ti5o12 Nio Anode Material Lithium-ion Battery Electrochemical Performance
WOS标题词Science & Technology ; Physical Sciences
DOI10.1007/s10008-015-2827-6
研究领域[WOS]Electrochemistry
关键词[WOS]SPINEL LI4TI5O12 ; ELECTRODE MATERIALS ; TITANIA NANOTUBES ; COMPOSITE ANODE ; HIGH-ENERGY ; NIO ; NANOCRYSTALLINE ; NANOPARTICLES ; STABILITY ; CAPACITY
收录类别SCI
语种英语
WOS类目Electrochemistry
WOS记录号WOS:000354622700030
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/9087
专题中国科学院广州能源研究所
作者单位1.South China Agr Univ, Coll Sci, Inst Biomat, Guangzhou 510642, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
3.Northwestern Univ, Dept Chem, Evanston, IL 60208 USA
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Zhang, Congcong,Shao, Dan,Gao, Qiongzhi,et al. Electrochemical lithium storage of Li4Ti5O12/NiO nanocomposites for high-performance lithium-ion battery anodes[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2015,19(6):1859-1866.
APA Zhang, Congcong.,Shao, Dan.,Gao, Qiongzhi.,Lu, Yuheng.,Liu, Zuotao.,...&Chen, Dongyang.(2015).Electrochemical lithium storage of Li4Ti5O12/NiO nanocomposites for high-performance lithium-ion battery anodes.JOURNAL OF SOLID STATE ELECTROCHEMISTRY,19(6),1859-1866.
MLA Zhang, Congcong,et al."Electrochemical lithium storage of Li4Ti5O12/NiO nanocomposites for high-performance lithium-ion battery anodes".JOURNAL OF SOLID STATE ELECTROCHEMISTRY 19.6(2015):1859-1866.
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