期刊
IONICS
卷 17, 期 9, 页码 799-803出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11581-011-0581-z
关键词
Lithium ion battery; Negative electrode material; Li4Ti5O12; Physical property
资金
- National Natural Science Foundation of China [50902001]
- Scientific Research Foundation
- Education Department of Anhui Province, China [KJ2010A045]
- Foundation for Young Talents in College of Anhui Province, China [2010SQRL033ZD]
- Anhui University of Technology [2011011]
- Chinese Ministry of Education [210083]
- Ningbo Natural Science Foundation [2010A610145]
Powders of spinel Li4Ti5O12 (LTO) were successfully synthesized at reducing conditions by solid-state method. The structure and physical properties of Li4Ti5O12 were examined by X-ray diffraction (XRD), Raman spectroscopy, scanning electronic microscopy (SEM), and differential capacitance, respectively. XRD shows that both samples are single-phase spinel compounds. LTO synthesized in Ar/H-2(8% mol) has a larger lattice parameter than that in Ar. SEM indicates that all of the prepared powders have the uniform, nearly cubic structure morphology with narrow size distribution in the range of 200-300 nm. Raman spectra indicate that the Raman bands corresponding to the Ti-O vibration has a blue shift from 674 to 680 cm(-1) due to the few H-2 in the synthesized condition, indicating that there is very few oxygen vacancies in the Li4Ti5O12 synthesized under Ar/H-2 (8% mol). The dQ/dV vs. voltage plots reveals the redox potentials for the synthesized Li4Ti5O12-negative electrode materials.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据