Synthesis of cathode/anode active materials for large-scale Li 2nd battery in supercritical fluids

Title
Synthesis of cathode/anode active materials for large-scale Li 2nd battery in supercritical fluids
Authors
김재훈
Issue Date
2012-11
Publisher
International Workshop on Process Intensification
Abstract
Supercritical fluids can offer environmentally benign and facile synthetic conditions for the production of nanomaterials owing to their unique physical properties, including low viscosity, fast diffusion, zero surface tension, and tuneable physical properties. These factors make it a promising medium for overcoming the barriers associated with other techniques, which include the generation of toxic reaction waste, difficulty in producing nanosize materials, and transport limitations. In addition, the rapid reaction rate (less than 1 min) allows us to develop a scalable process for the production of nanoparticles using a flow-type, tubular reactor system. This talk will be organized into two parts. The first part will cover lithium iron phosphate (LiFePO4) and lithium titanium oxide (Li4Ti5O12) synthesis using supercritical hydrothermal or solvothermal synthesis. Particle size and morphology of can be easily controlled by changing experimental parameters. The second part will discuss current studies of reduced graphene oxide preparation using supercritical alcohol. Supercritical alcohols may act as a cheap, non-toxic reducing agent for effectively deoxygenating graphene oxide to graphene-like sheets. Charge and discharge properties of the synthesized materials will be discussed.
URI
http://pubs.kist.re.kr/handle/201004/44183
Appears in Collections:
KIST Publication > Conference Paper
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