The first prototype of the modern lithium-ion battery originated in 1985, when Akira Yoshino successfully utilized carbonaceous material as an anode. This development replaced unstable polyacetylene, creating a viable energy storage solution that eventually powered mobile electronics globally. The invention fundamentally altered the landscape of consumer technology, leading to widespread adoption in cellular phones and notebook computers.
Academic Formation
Born in Suita, Japan, in 1948, Yoshino completed his primary and secondary education at Osaka Prefectural Kitano High School, graduating in 1966. He subsequently attended Kyoto University, earning a Bachelor of Science in 1970 and a Master of Science in 1972, both focusing on engineering. Decades later, he obtained a Doctor of Engineering degree from Osaka University in 2005. His formative academic years included exposure to the work of Nobel laureate Kenichi Fukui.
Industrial Research at Asahi Kasei
Yoshino began his professional career at Asahi Kasei in 1972, joining the Exploratory Research Team to investigate new general-purpose materials. His focus shifted toward rechargeable battery technology as Japan's electronics industry sought compact power sources. By 1982, he was stationed at the Kawasaki Laboratory, and in 1992, he moved into product development management. His tenure at the corporation spanned decades, culminating in his appointment as an honorary fellow.
Engineering the Lithium-Ion Battery
In 1981, Yoshino commenced research into rechargeable systems using polyacetylene, an electroconductive polymer. By 1983, he had fabricated a prototype using lithium cobalt oxide as a cathode. To overcome stability and volume challenges, he switched to carbonaceous anode materials. He further refined the system by developing an aluminum foil current collector, a functional separator membrane, and a positive temperature coefficient device to ensure safety. This architecture allowed the commercialization of the technology by 1991.
Academic Transition and Global Recognition
Since 2017, Yoshino has served as a professor at Meijo University. His extensive career has been marked by significant accolades, including the 2019 Nobel Prize in Chemistry, shared with M. Stanley Whittingham and John B. Goodenough. Other notable awards include the Japan Prize in 2018, the Charles Stark Draper Prize in 2014, and the Global Energy Prize in 2013. He has also been designated a Person of Cultural Merit by the Japanese government.
Fast facts
- Born: 1948, Suita, Japan
- Education: Kyoto University, Osaka University
- Primary Employer: Asahi Kasei
- Key Invention: Lithium-ion battery
- Nobel Prize: Chemistry, 2019
- Academic Status: Professor, Meijo University
- Notable Award: Charles Stark Draper Prize (2014)
Questions readers ask
What was the role of carbonaceous material in his invention?
Yoshino discovered that using carbonaceous material with a specific crystalline structure as an anode provided the necessary stability and capacity for the first generation of commercial lithium-ion batteries.
Which organization first commercialized Yoshino's battery?
Sony commercialized the lithium-ion battery in 1991, followed by A&T Battery Corp., a joint venture between Asahi Kasei and Toshiba, in 1992.
Achievements
- Nobel Prize in Chemistry — 2019
- Held posts at Asahi Kasei, Kyushu University and Meijo University
- Educated at Kyoto University, Osaka Prefectural Kitano High School and University of Osaka
- Fields of research: chemistry
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