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

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 sys...

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Bibliographic Details
Published in:Materials letters 2014-09, Vol.130, p.71-74
Main Authors: Jia, Puqi, Shao, Zhongbao, Liu, Kuiren
Format: Article
Language:English
Subjects:
Ball milling
Crystal structure
Discharge
Dispersants
Dispersions
Electrical properties
Electrochemical analysis
Glucose
Glucose monohydrate
Li4Ti5O12
Mechanical agitation
Solid phases
Thermal analysis
Ultrasonic dispersion
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Summary: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 187.003mAh/g at 0.1C-rate, and retained at 183.509mAh/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. [Display omitted] •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.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2014.05.072