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http://hdl.handle.net/11133/1695
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Title: | Effect of Surface Fluorination and Conductive Additives on the Charge/Discharge Characteristics of Lithium Titanate for Lithium Ion Battery |
Authors: | NAKAJIMA, T UENO, A ACHIHA, T OHZAWA, Y ENDO, M |
Issue Date: | 24-Sep-2009 |
Publisher: | 愛知工業大学 |
Abstract: | Effect of surface fluorination and conductive additives on the charge/discharge behavior of lithium titanate (Li4/3Ti5/3O4) has been investigated using F2 gas and vapor grown carbon fiber (VGCF). Surface fluorination of Li4/3Ti5/3O4 was made using F2 gas (3x104 Pa) at 25-150℃ for 2 min. Charge capacities of Li4/3Ti5βO4 samples fluorinated at 70℃ and 100℃ were larger than those for original sample at high current densities of 300 and 600 mA/g. Optimum fluorination temperatures of Li4/3Ti5/3O4 were 70℃ and 100℃. Fibrous VGCF with a large surface area (17.7 m2/g) increased the utilization of available capacity of Li4/3Ti5/3O4 probably because it provided the better electrical contact than acetylene black (AB) between Li4/3Ti5/3O4 particles and nickel current collector. |
URI: | http://hdl.handle.net/11133/1695 |
Appears in Collections: | 11号
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