Abstract：TiC powder was obtained by high energy ball milling of pure titanium powders and toluene. After calcination at 750 ℃ for 1h and secondary ball milling, the negative electrode of lithium-ion battery was prepared. The phase composition and microstructure of the TiC powder were analyzed and observed, the tests of the charge-discharge cycle performance of the anode material were performed. The results show that TiH2 and WC impurities are presented in the product after ball milling, and the TiH2 impurity is removed by vacuum calcination and secondary ball milling, higher purity TiC powder is obtained. The TiC grain size is refined and the final product grain size is 12.5 nm. The specific capacity of the TiC anode prepared by ball milling is stable during long-term discharge. When the current density is 1 A/g, the specific discharge capacity still can be maintained at 110 (mA∙h)/g when the cycle is 3 000 times. The TiC anode material has excellent long cycle performance and can be used as the framework material of Si anode material.
[1] GUO Z P, ZHAO Z W, LIU H K, et al.Lithium insertion in Si-TiC nanocomposite materials produced by high-energy mechanical milling[J]. J Power Sources, 2005, 146(1/2): 190-194. [2] CHENG K, YANG K, YE K, et al.Highly porous Fe3O4-Fe nanowires grown on C/TiC nanofiber arrays as the high performance anode of lithium-ion batteries[J]. Journal of Power Sources, 2014, 258: 260-265. [3] ZHANG T, GAO J, ZHANG H P, et al.Preparation and electrochemical properties of core-shell Si/SiO nanocomposite as anode material for lithium ion batteries[J]. Electrochem Commun, 2007, 9(5): 886-890. [4] BESENHARD J O, YANG J, WINTER M.Will advanced lithium-alloy anodes have a chance in lithium-ion batteries?[J]. J Power Sources, 1997, 68(1): 87-90. [5] WILLIAMS W S.Transition metal carbides, nitrides, and borides for electronic applications[J]. JOM, 1997, 49(3): 38-42. [6] PATEL P, KIM I S, KUMTA P N.Nanocomposites of silicon/ titanium carbide synthesized using high-energy mechanical milling for use as anodes in lithium-ion batteries[J]. Materials Science and Engineering: B, 2005, 116(3): 347-352. [7] ZENG Z Y, YU J P, YANG Y Z, et al.Nanostructured Si/TiC composite anode for Li-ion batteries[J]. Electrochimica Acta, 2008, 53(6): 2724-2728. [8] WAGEMAKER M, BORGHOLS W J H, MULDER F M. Large impact of particle size on insertion reactions. a case for anatase LixTiO2[J]. Journal of the American Chemical Society, 2007, 129(14): 4323-4327. [9] POIZOT P, LARUELLE S, GRUGEON S, et al.Nano-sized transition-metal oxides as negative-electrode materials for lithium-ion batteries[J]. Nature, 2000, 407(6803): 496. [10] LI J, LI F, HU K, et al.TiB2/TiC nanocomposite powder fabricated via high energy ball milling[J]. Journal of the European Ceramic Society, 2001, 21(16): 2829-2833. [11] WANG L, WIXOM M R, THOMPSON T.Structural and mechanical properties of TiB2 and TiC prepared by self- propagating high-temperature synthesis/dynamic compaction[J]. Journal of materials science, 1994, 29(2): 534-543. [12] ZHANG H, XU H.Nanocrystalline silicon carbide thin film electrodes for lithium-ion batteries[J]. Solid State Ionics, 2014, 263: 23-26.
2019, Vol. 24 
