Artikelrobot
Well-Known Member
Nippon Telegraph and Telephone Corporation have developed a prototype micro polymer-electrolyte fuel cell (PEFC)1 that uses hydrogen gas as a fuel and is small enough to directly fit in a mobile phone
http://www.southgatearc.org/news/feb2005/ntt_fuel_cell.htm
http://www.southgatearc.org/news/feb2005/ntt_fuel_cell.htm