Synthesis and Electrochemical Properties of High-Rate Spinel Li 4 Ti 5 O l2 /TiN Anode Material for Lithium-Ion Batteries
Synthesis and Electrochemical Properties of High-Rate Spinel Li 4 Ti 5 O l2 /TiN Anode Material for Lithium-Ion Batteries
复制标题
DOI：
10.3866/pku.whxb20101212
复制
发表时间：
2010
影响因子：
10.9
通讯作者：
Zhou Xiao-ling;Huang Ruian;WU Zhao-Cong;Y. Bin;Dai Yong-nian
中科院分区：
文献类型：
--
作者：
Zhou Xiao-ling;Huang Ruian;WU Zhao-Cong;Y. Bin;Dai Yong-nian
以乙酰丙酮（ACAC）为螯合配体，聚乙二醇（PEG）为分散剂，采用溶胶-凝胶法制备了尖晶石型Li 4 Ti 5 O 12/TiN复合材料。研究了TiN薄膜对锂离子电池正极材料Li 4 Ti 5 O 12电化学性能的影响。采用X射线光电子能谱（XPS）对Li 4 Ti 5 O 12/TiN复合材料进行了分析。X射线衍射（XRD）和扫描电子显微镜（SEM）分析表明，该阳极材料为亚微米级的尖晶石型Li 4 Ti 5 O 12。Li 4 Ti 5 O 12/TiN的首次放电比容量为173.0 mAh·g - 1
Spinel Li4Ti5Ol2/TiN was successfully prepared by sol-gel processing using acetylacetone (ACAC) as a chelating ligand and polyethylene glycol (PEG) as a dispersant. The effect of the TiN film on the electrochemical properties of spinel Li4Ti5Ol2 for lithium-ion batteries was studied. The Li4Ti5Ol2/TiN was analyzed by X-ray photoelectron spectroscopy (XPS). X-ray diffraction (XRD) patterns and scanning electron microscope (SEM) images showed that this anode material with the TiN film was pure spinel Li4Ti5Ol2 and was of sub-micron size. The initial specific discharge capacity of the Li4Ti5Ol2/TiN is 173.0 mAh·g - 1