锂离子电池负极材料钛酸锂的研究进展

锂离子电池负极材料钛酸锂的研究进展

谭毅, 薛冰

Research Progress on Lithium Titanate as Anode Material in Lithium-ion Battery

Yi TAN, Bing XUE

表1 代表性阴阳离子掺杂Li₄Ti₅O₁₂的Li, Ti, O各位点对性能的影响

Table 1 Summary of representative LTO doped with various cations/anions in the Li, Ti and O sites

Ion	Radius /nm	Doping content molar ratio	Size/nm	Initial discharge capacity/(mAh^.g^-1)	Cycle performance/ (mAh^.g^-1)	Method	Ref.
Cation doping in the Li sites(radius 0.076 nm)
Mg²⁺	0.0720	0.20	100-200	190.0(1C)^a	179.0(1C, 100)^b; 150.0(5C, 100)	Solid state reaction	[30]
Ca²⁺	0.1000	0.10	1000-2000	169.7(0.5C)	162.4(1C, 100); 148.8(5C, 100)	Solid state reaction	[31]
Sc³⁺	0.0745	0.05	200	174.0(1C); 94.0(40C)	94.0(40C, 50)	Sol-Gel	[32]
Cu²⁺	0.0730	0.05	200-600	158.0(0.1C)	143.8(0.1C, 150)	Sol-Gel	[33]
La³⁺	0.1032	0.06	24.5	169.0(0.1C)	153.4(1C, 10); 146.9(5C, 10)	Liquid method	[34]
Cation doping in the Ti sites (radiusTi³⁺0.067 nm, Ti⁴⁺0.0605 nm)
Al³⁺	0.0535	0.15	50-200	216.0(1C); 163.0(10C)	180.0(5C, 50); 160.0(10C, 50)	Cellulose-assisted glycine-nitratecombustion	[35]
Zr⁴⁺	0.0720	0.03	200	165.0(5C); 152.0(10C)	142.0(5C, 200); 127.0(10C, 200)	Liquid method	[36]
Ce⁴⁺	0.0870	0.10	<1000	190.0(0.2C); 40.0(2C)	140.0(2C, 100)	Solid state reaction	[37]
Ta⁵⁺	0.0640	0.05	500-1000	193.0(0.2C)	132.0(5C, 100)	Solid state reaction	[38]
Anions doping in the O site (radius 0.14 nm)
Cl^-	0.181	0.2	3-8 μm	148.7(0.5C)	133.8(0.5C, 50)	Solid state reaction	[39]
Cl^-	0.181	0.2	3-8 μm	120.7(2C)	133.8(0.5C, 50)	Solid state reaction	[39]
Br^-	0.196	0.3	1-2 μm	174.0(0.2C)	138.0(10C, 100); 104.0(210C,100)	Solid state reaction	[40]