Toshiba used the Cebit trade show to demonstrate for the first time an operating prototype fuel cell for notebook PCs, but the company, citing size, weight and regulatory concerns, said it will not commercialize the technology for about another three years. The company previously said that it intended to have its direct methanol fuel cell (DMFC) for notebook PCs ready for the market in 2004, but the schedule has slipped several times.
DMFCs are being developed to replace batteries for portable electronic devices and they typically work by mixing methanol with air and water to produce electrical power. Only methanol is required as fuel, and the by-products are heat and water. The prototype shown at Cebit produces about 20 watts of power and can power an A5-size Portege M300 notebook PC for about 10 hours on a single charge of nearly 100 percent concentration of methanol, according to the company.
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