Perfect Lithium files battery material patents

Perfect Lithium files battery material patents

Perfect Lithium files battery material patents Energy Storage Journal

In April Perfect Lithium announced patent filings for materials processing technology that can potentially cut the $/kWh costs of lithium-ion (Li-ion) battery materials by as much as 50%.

The patents describe methods, which are industrially scalable, to cut costs and to boost performance of nanoscale ceramic powders including Li-ion materials for mobile devices, electric vehicles and stationary storage.

The methods are used to make fine, ultra-fine, nanoscale and uniform ceramic powders, which have applications in a range of industries, including medical, semiconductor as well as energy storage. However the immediate focus for Vancouver-headquartered Perfect Lithium is Li-ion battery materials.

The efficiency gains are achieved by reducing raw material input requirements, by simplifying the methods of processing these raw materials, and by providing unique nanostructures that enhance performance characteristics such as energy storage, power and cycling.

Battery materials are prepared using a variety of different methods, often requiring time consuming, labour intensive and high-energy procedures, often with expensive solvents and reactants. Up-and-coming battery materials are often encumbered by economically impractical procedures that impede ease of scale-up for commercialisation.

Perfect Lithium’s methods do not require rigorous and intensive steps such as the repetitive grinding, milling and blending currently in common use. The process takes place at ambient or mild temperatures and standard pressures, eliminating needs for super or subcritical conditions. There are no expensive chemicals nor reactants and normal procedures such as filtering and washing are not required. In some cases, up to 75% of the steps have been eliminated.

The patent pending methodology will bring much needed efficiency gains to the preparation of today’s lithium-ion cathode materials and it will also provide a scalable and economically viable production route for next generation battery materials in electronics, transportation and grid storage applications. There are plans for a piloting phase in 2014.