High-density cathode material for all-solid batteries

Fujitsu Australia

Thursday, 02 March, 2017

Electronics companies FDK and Fujitsu Laboratories have developed lithium cobalt pyrophosphate (Li2CoP2O7), which has high energy density, for the cathode material of all-solid lithium-ion batteries.

In recent years, there is increasing interest in high energy density and safety performance for batteries. While there is active progress on improving lithium-ion and other existing batteries, all-solid-state batteries are attracting attention as next-generation batteries with high safety performance.

FDK is currently working on the development of all-solid-state batteries with such characteristics as high energy density, good safety performance and long battery life. As part of this work, FDK partnered with Fujitsu Laboratories in the creation of the cathode material Li2CoP2O7 for all-solid-state batteries.

The material has approximately 1.5 times the energy density of existing cathode materials for lithium-ion batteries. When applied to all-solid-state batteries, the companies say the material will be capable of operating with twice this energy density. It will thus enable the development of all-solid-state batteries with high voltage and capacity.

The companies are currently working to raise the performance of the material and are additionally aiming to launch a compact and safe all-solid-state battery that can be used in IoT applications, wearables and mobile devices.

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