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Article Released Mon-18th-June-2018 09:00 GMT
Contact: Mikiko Tanifuji Institution: National Institute for Materials Science
 Japan pivotal to advancing solid-state ionics [Asia Research News 2018 Moments in History]

The field of solid-state ionics originated in Europe, but Takehiko Takahashi of Nagoya University in Japan was the first to coin the term ‘solid ionics’ in 1967.

Image Name
The largest commercial application of solid-state ionics is lithium-ion batteries, which Sony commercialized around 1990. The lithium-ion batteries pictured were used in some of the early Kyocera cellular phones.
Copyright : Sony Energy Devices Corporation
‘Solid-state ionics’ first appeared in 1971 in another of his papers, and was likely a play on ‘solid-state electronics’, another rapidly growing field at the time. Over the decades, Japanese researchers have expanded the understanding of ionic conduction in solid compounds involving lithium, sodium-sulphur and perovskite structures. These findings have led to the development of a variety of sensors and batteries, many of which are designed or manufactured in Japan, according to a review in Science and Technology of Advanced Materials. For example, Sony first commercialized lithium-ion batteries in 1990. NGK Insulators, Ltd. commercialized sodium-sulphur batteries to store renewable energy in 2002. Japan also supplies two-thirds of the world’s zirconia-based oxygen sensors, which help control combustion conditions in cars.

Further information
Professor Osamu Yamamoto | E-mail:
Graduate School of Engineering
Mie University

Mikiko Tanifuji | E-mail:
Science and Technology of Advanced Materials
National Institute for Materials Science
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