Redox flow battery with low cost, high electromotive force and current density
The amount of electricity generated by renewable energy varies a lot on climate, etc. Therefore, it is preferable to use it in combination with storage battery in order to supply stable electric power. Redox flow battery (RFB), which charges and discharges by ion redox reaction, is highly valued for its safety due to its nonflammability, its high durability as the electrolyte & electrode hardly deteriorate, and its low running cost. Vanadium RFB is in practical use but in recent years, the resource price of vanadium active material has jumped, resulting in high initial cost. This invention uses only titanium as active material for both cathode / anode chambers, which significantly reduces the initial cost. There is existing RFB technology that combines titanium and manganese, but using different elements in the cathode / anode chambers risks contamination due to its principle, so a premature battery degradation could be expected. This invention has an advantage in this field and it is also expected to realize more efficient RFB because of its higher electromotive force and current density that can be extracted compared to conventional vanadium ion RFB.
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The revenue generated from technology transfer is reinvested into universities and researchers as new research funding, which is used to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will actively promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by concluding 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 - Showa Medical University
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