Koji Miki

Title: Koji Miki: Innovator in Nickel-Hydrogen Storage Technology

Introduction

Koji Miki is a prominent inventor based in Sumoto, Japan. He has made significant contributions to the field of energy storage, particularly through his innovative work on nickel-hydrogen storage batteries. With a total of 2 patents to his name, Miki continues to push the boundaries of technology in this vital area.

Latest Patents

Miki's latest patents include a nickel-hydrogen storage battery and a method for producing the same. The nickel-hydrogen storage battery features improved charge and discharge cycle characteristics, even at high temperatures. It comprises a negative electrode made of a hydrogen-absorbing alloy capable of electrochemically storing and releasing hydrogen. The positive electrode consists of nickel hydroxide as the main active material, along with an alkaline electrolytic solution primarily made of an aqueous potassium hydroxide solution. Notably, the positive electrode also contains a cobalt compound, a yttrium compound, and at least 100 ppm of lithium based on the total weight of the nickel hydroxide, cobalt compound, and yttrium compound.

The method of manufacturing the hydrogen-absorbing alloy electrode involves dissolving the particle surface of the alloy using a surface-treatment solution. Following this, the hydrogen-absorbing alloy is washed with an alkaline solution at a temperature of 30°C to 40°C. This process ensures that the metal ions dissolved by the surface-treatment solution are completely washed away, preventing them from precipitating back onto the surface of the hydrogen-absorbing alloy as hydroxide.

Career Highlights

Koji Miki has established himself as a key figure in the energy storage sector. His work at Sanyo Electric Co., Ltd. has been instrumental in advancing nickel-hydrogen battery technology. Miki's innovative approaches have garnered attention and respect within the industry, showcasing his commitment to enhancing energy storage solutions.

Collaborations

Miki has collaborated with notable colleagues, including Tadashi Ise and Masao Takee. These partnerships have contributed to the development of cutting-edge technologies in the field of energy storage.

Conclusion

Koji Miki's contributions to nickel-hydrogen storage technology highlight his role as an influential inventor. His innovative patents and collaborative efforts continue to shape the future of energy storage solutions.