固-液球磨法制备纳米TiC锂电池负极骨架材料及其电化学性能

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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.

Key words： toluene solid-liquid ball milling nano TiC negative pole of lithium battery framework materials electrochemical property

Received: 27 June 2019 Published: 19 June 2020

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	REN Yuduo
	YAN Gang
	ZHANG Shiting
	LUO Kun

Cite this article:

REN Yuduo,YAN Gang,ZHANG Shiting, et al. Preparation and electrochemical properties of nano TiC battery anode framework materials by solid-liquid ball grinding[J]. Materials Science and Engineering of Powder Metallurgy, 2019, 24(6): 523-528.

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http://pmbjb.csu.edu.cn/EN/ OR http://pmbjb.csu.edu.cn/EN/Y2019/V24/I6/523

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