May 2004

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Mitsubishi Corp., Japan’s largest general trading company, says it has developed a new prototype high-pressure electrolyzer capable of generating hydrogen at maximum pressures of 35 MPa (5,000 psi) without a compressor. Output of the prototype High Pressure Hydrogen Energy Generator (HHEG) s 2.5 Nm3/hour. The company says it plans to develop an advanced model generating 30 Nm3/hour at 40 MPa (5,800 psi). Mitsubishi’s release says the device is a PEM-type electrolyzer who characteristically generate hydrogen under pressure. The company says consists of a cell stack in a high-pressure vessel which stores the compressed hydrogen. The company expects to introduce commercial versions next year, targeted at small-scale industrial applications, hydrogen fueling stations for fuel cell vehicles, backup power units and systems that link with renewable energy. Contacts: Mitsubishi, Kensuke (Ken) Tojima, Manager, Fuel Cell/Hydrogen Energy Business Development Unit, phone 081/3/3210-8414, e-mail kensuke.tojima@mitsubishicorp.com.; Yusuke Uchimura, Manager, Press Relations Office, phone 081/3/3210 21 72, yusuke.uchimura@mitsubishicorp.com.