Koichi Mizushima (scientist)
Japanese researcher
Koichi Mizushima (水島公一, Mizushima Kōichi; born January 30, 1941) is a Japanese researcher known for discovering lithium cobalt oxide (LiCoO2) and related materials for the lithium-ion battery (Li-ion battery). He was affiliated with the University of Tokyo before he went on to work for Toshiba.
Early career
Koichi Mizushima was trained as a physicist at the University of Tokyo and received a PhD in Physics from the University of Tokyo. He worked for 13 years in the Physics Department at the University of Tokyo. In 1977, he was invited by Professor John Goodenough in the Inorganic Chemistry Department at Oxford University to join them as a research scientist. During his stay (1977-1979) at Oxford, Dr. Mizushima, along with John B. Goodenough, discovered LiCoO2 and related compounds now used for the cathode of the Li-ion battery. He went on to work for Toshiba.
“Koichi Mizushima (scientist)” enters the record as japanese researcher. Crown Archives preserves that source wording while asking what Koichi, Mizushima and scientist can confirm, complicate or overturn.
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Chronology provides the most reliable spine for this subject; interpretation should follow only after identities and dates are secure. The source revision retrieved here is dated Aug 29, 2026. The linked authority identifier is Q11548478. VIAF identifies the subject as 256155899. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1941, 1977 and 1979.
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This entry incorporates text from “Koichi Mizushima (scientist)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.