July 6, 2005
NTT DoCoMo extends lifetime of methanol fuel cells for mobile phones
NTT DoCoMo and Fujitsu Laboratories have developed a prototype methanol fuel cell for 3G FOMA handsets that enables eight hours of continuous talk time, three times the capacity of the existing prototype, while weighing the same, 190g. The new device is expected to greatly extend usage time once it goes into commercial production.
DoCoMo unveiled a prototype micro fuel cell using methanol as an inexpensive source of fuel last September to meet user demands for more convenient handsets with greater power capacity and reduced environmental impact.
DoCoMo is also trying to increase the capacity of its lithium-ion batteries, the most commonly used battery in handsets today.
Further work on the prototype, a cradle-shaped device, is expected to be completed by the end of March 2006.
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