Sol-Gel Synthesis of Nanocrystalline Mesoporous Li4Ti5O12 Thin-Films as Anodes for Li-Ion Microbatteries

The development of anodes based on Li4Ti5O12 (LTO) for lithium ion batteries has become very important in recent years on the basis that it allows a long service life (stability in charge-discharge cycling) and safety improvements. The processing of this material in the form of thin film allows for...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2020-07, Vol.10 (7), p.1369
Main Authors: Mosa, Jadra, Aparicio, Mario
Format: Article
Language:English
Subjects:
Advantages
Anodes
Block copolymers
Carbon
Chemical synthesis
Electric vehicles
Electrical conductivity
Electrical resistivity
Electrochemical analysis
Electrochemistry
Electrolytes
Ethanol
Heat treatment
Li-ion microbatteries
Li4Ti5O12
Lithium
Lithium-ion batteries
mesoporous
Methods
Microbatteries
Microscopy
Nanocrystalline materials
Nanostructured materials
Particle size
Polyethylene
Pore size
Pore size distribution
Porosity
Rechargeable batteries
Service life
Silicon wafers
Sol-Gel
Sol-gel processes
Structural analysis
Thin film
Thin films
Titanium
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Summary:The development of anodes based on Li4Ti5O12 (LTO) for lithium ion batteries has become very important in recent years on the basis that it allows a long service life (stability in charge-discharge cycling) and safety improvements. The processing of this material in the form of thin film allows for greater control of its characteristics and an improvement of its disadvantages, namely reduced electrical conductivity and low diffusion of lithium ions. In this work, we try to limit these disadvantages through the synthesis of a mesostructured carbon-doped Li4Ti5O12 thin-film with a pure spinel phase using a combination of a block-copolymer template and in situ synthesis of Li-Ti double alkoxide. Structural and electrochemical characterization has been carried out to determine the best conditions (temperature, time, atmosphere) for the thermal treatment of the material to reach a compromise between crystallinity and porosity distribution (pore size, pore volume, and interconnectivity).
ISSN:2079-4991
2079-4991
DOI:10.3390/nano10071369