Battery sheet capable of long-term storage
Metal-air batteries composed of a metal electrode (negative electrode), an electrolyte, and an air electrode(positive electrode) have the advantage of being lighter than other batteries and have been used practically as power sources for hearing aids. On the other hand, the degradation of the metal electrode caused by contact with the electrolyte and the low voltage compared with other batteries have been pointed out as problems.The present invention relates to a new form of metal-air battery which solves the above problems. The present battery is a "foldable metal-air battery" in which a plurality of metal electrodes, electrolytes, and air electrodes are arranged on a sheet, and a plurality of laminates of metal electrodes/electrolytes/air lectrodes are formed by folding the sheet. Since the sheet is folded to function as a battery, the electrolyte and metal electrodes do not come into contact with each other when not in use, and deterioration can be prevented. The figure on the right shows the measured voltage when the number of cells in the laminate is increased. By stacking multiple cells as in origami, the problem of low voltage of metal-air batteries can also be solved. Since this battery solves the conventional problem and has a new foldable type, it is expected to be put into practical use in the following applications.
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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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