Japan ORIST: Practical use of high-power, all-solid-state batteries: 1/10 thickness
-ORIST develops a solid electrolyte sheet with a thickness of 1/10-
Osaka Research Institute of Industrial Science and Technology (ORIST):
We have developed a self-supporting solid electrolyte sheet for LIB.
The thickness is 30 micrometers (micro is one millionth) or less.
With a thin film with strength, wearing a prospect of mass production technology.
Solid electrolyte sheet for LIB:
Compared to conventional solid electrolytes, it is less than one-tenth the thickness and has low electrical resistance.
Stacked with electrodes, it is equipped for large-capacity, high-output all-solid-state batteries.
Challenges for all-solid-state batteries:
Electrode development for EV and IoT devices is in progress.
Conventionally, the thickness of the electrolyte between the positive and negative electrodes is the biggest issue for increasing the capacity.
This time, we succeeded in filling the resin film with fine through holes with electrolyte powder.
Achieves thinning of electrolyte while maintaining strength
In addition to suppressing electrical resistance, it was also confirmed that it has advanced charge / discharge characteristics.
Solid electrolyte sheet:
A photosensitive material is used for the base resin film,
Create a pattern by making fine holes with lithography technology,
Filled with sulfide-based solid electrolyte powder,
Manufactured by heating and pressurizing.
This time, the laboratory succeeded in producing a sheet of 8 cm square.
Depending on the manufacturing equipment, the area can be increased.
Practical use of all-solid-state batteries:
Murata Manufacturing:
Mass production of oxide-based all-solid-state batteries will begin in the second half of 2020.
Toyota Motor:
They are embarking on the development of fluoride ion batteries with Kyoto University.
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