Pretreatments-assisted high temperature ball milling route to Li4Ti5O12 and its electrochemical performance

• Spinel Li4Ti5O12 particles were synthesized by high temperature ball milling with the assistance of ultrasonic dispersion and mechanical agitation.
• Spinel Li4Ti5O12 particles were synthesized by high temperature ball milling by using glucose monohydrate as a solid phase dispersant.
• The influence of different pretreatments on the electrochemical properties of Li4Ti5O12 materials was investigated.
• The effect of different additive amounts of glucose monohydrate on the electrochemical properties of Li4Ti5O12 materials was investigated.

Spinel Li4Ti5O12 was synthesized via a high temperature ball milling route with the assistance of ultrasonic dispersion, mechanical agitation, and glucose monohydrate solid phase dispersant, respectively. The crystal structures and the electrochemical properties of the as-prepared Li4Ti5O12 were systematically investigated. The results showed the as-prepared samples were highly-crystalline and exhibited high capacities and good cycle stabilities. The initial discharge capacity of sample C5 mixed with 5% glucose monohydrate reached 187.003 mA h/g at 0.1 C-rate, and retained at 183.509 mA h/g after 20 cycles. This facile solid phase dispersant-assisted high temperature ball milling method could be an excellent way to synthesize Li4Ti5O12 for practical applications.

From the figure, we could know that Li4Ti5O12 particles were synthesized by high temperature ball milling with the assistance of ultrasonic dispersion, mechanical agitation, and glucose monohydrate as a solid phase dispersant. All the samples showed good initial specific capacities and cycle stabilities.Figure optionsDownload as PowerPoint slide