Location History:
- Chiba, JP (2002 - 2017)
- Tokyo, JP (2014 - 2017)
Company Filing History:
Years Active: 2002-2017
Title: Akihiko Shirakawa: Innovator in Lithium Battery Technology
Introduction
Akihiko Shirakawa is a prominent inventor based in Chiba, Japan, known for his significant contributions to the field of lithium battery technology. With a total of 17 patents to his name, he has made remarkable advancements that enhance the performance and efficiency of lithium secondary batteries.
Latest Patents
One of his latest patents is a method of producing a cathode active material for lithium secondary batteries. This invention provides a way to configure a lithium secondary battery that improves discharge capacity while suppressing the elution of lithium ions from lithium metal phosphate during the washing process. The method involves synthesizing a lithium metal phosphate represented by the composition formula LiMPO, where the element M includes one or more transition metals such as Fe, Mn, Co, and Ni. After synthesis, the lithium metal phosphate is washed with a lithium ion-containing washing liquid.
Another notable patent is a method for producing lithium metal phosphate. This method initiates a conversion reaction of a lithium ion source, a divalent transition metal ion source, and a phosphate ion source in the presence of a polar solvent at temperatures of 150°C or higher. The reaction is facilitated by bringing two solutions containing these ions into contact or by adjusting the pH of a solution containing the ions to 4 or higher.
Career Highlights
Throughout his career, Akihiko Shirakawa has worked with notable companies, including Showa Denko K.K. and Showa Denko Kabushiki Kaisha. His work in these organizations has contributed to the development of innovative technologies in the battery industry.
Collaborations
He has collaborated with esteemed colleagues such as Takao Noda and Joseph Gaze, further enhancing the impact of his research and inventions in the field.
Conclusion
Akihiko Shirakawa's contributions to lithium battery technology through his patents and collaborations have positioned him as a key figure in the advancement of energy storage solutions. His innovative methods continue to influence the development of more efficient and effective lithium secondary batteries.