IEEE Awards Booklet - 2012 - 8

I E E E

M E D A L S

2012 IEEE
Medal For Environmental and Safety Technologies
Sponsored by Toyota Motor Corporation

John Bannister Goodenough, Rachid Yazami, and Akira Yoshino

For developing the lithium-ion battery, which enables significant fuel
conservation and reduced emissions as power storage for electric vehicles and
for smartgrids incorporating renewables

The breakthrough discoveries of John Bannister
Goodenough, Rachid Yazami, and Akira Yoshino were
critical to the development of rechargeable lithium-ion
battery technology that has impacted consumer electronics and advanced the performance of electric vehicles. Dr.
Goodenough demonstrated a rechargeable cell using
lithium cobalt oxide as the positive electrode in 1979
while working at Oxford University. This provided the
positive electrode material that would eventually make
the lithium-ion battery possible. Goodenough's work
showed, with lithium cobalt oxide, that more stable and
easy-to-handle negative-electrode materials could be
used if assembled in the discharged state. This ultimately
opened a new range of possibilities for rechargeable
battery systems. Dr. Yazami demonstrated that lithium
ions could be inserted electrochemically into graphite
using a solid electrolyte in 1980, working with the National
Polytechnic Institute of Grenoble and the National Center
for Scientific Research (CNRS). Until Dr. Yazami's innovation, organic electrolytes would decompose in graphite
during charging, which was a roadblock to using graphite
for the negative electrode. Dr. Yazami's work paved the
way for the graphite negative electrode found in the
modern high-capacity lithium-ion battery. Dr. Yoshino
filed the first basic patent for the lithium-ion battery in
1985. Working for Asahi Kasei Corporation in Japan, he

incorporated lithium cobalt for the positive electrode and
a carbonaceous material for the negative electrode. He
developed an aluminum foil current collector, and his
functional separator and positive temperature coefficient
device greatly improved safety compared to other
batteries. He also established the coil-wound structure
inherent to all lithium-ion batteries. In 1992, Asahi Kasei
released the first commercial lithium-ion battery.
A member of the U.S. National Academy of Engineering,
the French Academy of Sciences, and a Foreign Member
of the British Royal Society, Dr. Goodenough received the
Japan Prize in 2001. He is currently the Virginia H. Cockrell
Centennial Professor of Engineering at the University of
Texas at Austin.
A past president of the International Battery Association,
Dr. Yazami is currently a research director at CNRS and a
professor of materials science and engineering with
Nanyang Technological University, Singapore.
An Asahi Kasei Fellow and president of the Lithium Ion
Battery Technology and Evaluation Center, Dr. Yoshino is
currently general manager of the Yoshino Laboratory at
Asahi Kasei Corporation, Shizuoka, Japan.

Scope: For outstanding accomplishments in the application of technology in the fields of interest to IEEE that improve
the environment and/or public safety
8



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