Tohoku Univ. Technology : Room temperature deposition of oxide solid ionic films : T22-111
Thin film deposition technology by plating oxide solid ion battery
We have developed a technology to deposit solid-state ionic films used in solid oxide secondary batteries at room temperature by electroplating. This technology makes it possible to integrate small solid-state ionic batteries, which has been difficult until now. Some oxide solid-state ionic batteries are fabricated by powder sintering or sputtering, but they require a high temperature process, so the separation by thermal stress is a problem. The present invention provides a technique for depositing a solid ionic film (Cathode electrode and solid electrolyte films) by electroplating without requiring a high temperature process. The films of the cathode active materials and solid electrolytes were successfully deposited and patterned by electroplating at room temperature. In addition, an ionic solid-state battery was fabricated using this technology, and its operation was confirmed (right figure).
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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