First in the world! Creation
of lithium ion rechargeable battery using lithium manganate
as a cathode material
There are two types of lithium ion rechargeable
batteries available on the market: one uses a cathode material
of lithium cobaltite and the other uses that of lithium manganate.
NEC TOKIN currently manufactures the lithium manganate type.
Although a battery using lithium cobaltite has a high discharge
energy density, this type of battery has some problems. For
example, the material cost is high because cobalt, a rare metal,
is used and a protection circuit is required to prevent overcharging.
NEC TOKIN Corporation has solved these problems. The group is
the first company in the world to succeed in putting stable
spinel type lithium manganate technology to practical use. This
success has lead to existence lithium manganate lithium ion
rechargeable batteries using spinel type lithium manganate as
the cathode material.
