advances | tech breakthroughs
continued from page 18
meaning the nickel and lithium were drawn to
each other, interfering with the flow of lithium
ions and slowing down the charging rate.
To maximize the charge rate, the researchers designed and synthesized a material with
an ordered crystalline structure, allowing
lithium ions to flow freely between the metal
layers. The resulting battery can charge or discharge in about 10 minutes, about 10 times
faster than unmodified lithium nickel manganese oxide. That brings it much closer to the
timeframe needed for hybrid car batteries,
Ceder said.
The lead author on the research paper is
Kisuk Kang, a graduate student in Ceder's lab.
Ying Shirley Meng, a postdoctoral associate in
materials science and engineering at MI T, and
Julien Breger and Clare P. Grey of the State
University of New York at Stony Brook are
also authors on the paper.
The research was funded by the National
Science Foundation and the U.S. Department
of Energy. ST
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