Japan’s battery components’ maker FDK Corporation and ICT (information and communication technology) firm Fujitsu Laboratories Ltd have jointly developed lithium cobalt pyrophosphate (Li2CoP2O7) for the cathode of all-solid lithium-ion batteries.
The cooperative development has 1.5 times more energy density than the existing cathode materials for lithium-ion batteries, said Fujitsu.
Computational physics tests showed that applying the material to all-solid-state batteries is capable of operating with twice the energy density of existing cathode materials used in lithium-ion batteries.
The companies’ figures noted Li2CoP2O7 could work at over 5V charge/discharge, which is above the limits of conventional lithium batteries.
The new chemistry has 860Wh/kg capacity, compared to the 530Wh/kg of LiFePO4 and 570Wh/kg of LiCoO2
The achievement resulted from the merger of FDK’s Computer Aided Engineering (CAE) technology and Fujitsu’s materials formation technologies.
Without the leakage of liquid electrolytes, the all-solid batteries are considered as the safer option to be employed under high temperature environment. The inflammable oxide-based material allows lithium batteries used in wearable and portable devices.