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公开(公告)号：EP2153483B1
公开(公告)日：2011-11-16
申请号：EP08756350.8
申请日：2008-05-28
申请人： Cabot Corporation
发明人： LEI, Hanwei , ATANASSOVA, Paolina , WALL, Ryan, Cash , MIESEM, Ross, A. , SUN, Yipeng , RICE, Gordon, L.
CPC分类号： H01M4/8605 , H01M4/881 , H01M4/8882 , H01M4/8896 , H01M4/9016 , H01M4/9083 , H01M4/921 , H01M4/926 , H01M8/0234 , H01M8/1011 , H01M2008/1095 , Y02E60/523
摘要： A membrane electrode assembly comprises (a) a solid electrolyte polymer membrane; (b) an anode electrocatalyst layer disposed at one surface of the membrane and comprising a first electrocatalyst composition comprising carbon substrate particles and nanoparticles comprising an alloy of platinum and ruthenium disposed on the surface of the substrate particles; (c) a cathode electrocatalyst layer disposed at an opposite surface of the membrane, the cathode layer comprising a second electrocatalyst composition different from the first electrocatalyst composition and comprising carbon substrate particles and nanoparticles comprising platinum disposed on the surface of the substrate particles; and (d) gas diffusion layers disposed over each of the anode and cathode electrocatalyst layers. When operating in a direct methanol fuel cell with an active area of 25 cm2 and under conditions including a supply of IM methanol to the anode electrocatalyst layer at a rate of 3 ml per minute, a supply of air to the cathode electrocatalyst layer at a rate of 400 seem, the membrane electrode assembly provides an output voltage of 0.4 volt and a temperature of 7OoC, provides a power output in excess of 120 mW/cm2 and a normalized performance in excess of 34 mW/mgPt.
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公开(公告)号：EP2153483A2
公开(公告)日：2010-02-17
申请号：EP08756350.8
申请日：2008-05-28
申请人： Cabot Corporation
发明人： LEI, Hanwei , ATANASSOVA, Paolina , WALL, Ryan, Cash , MIESEM, Ross, A. , SUN, Yipeng , RICE, Gordon, L.
CPC分类号： H01M4/8605 , H01M4/881 , H01M4/8882 , H01M4/8896 , H01M4/9016 , H01M4/9083 , H01M4/921 , H01M4/926 , H01M8/0234 , H01M8/1011 , H01M2008/1095 , Y02E60/523
摘要： A membrane electrode assembly comprises (a) a solid electrolyte polymer membrane; (b) an anode electrocatalyst layer disposed at one surface of the membrane and comprising a first electrocatalyst composition comprising carbon substrate particles and nanoparticles comprising an alloy of platinum and ruthenium disposed on the surface of the substrate particles; (c) a cathode electrocatalyst layer disposed at an opposite surface of the membrane, the cathode layer comprising a second electrocatalyst composition different from the first electrocatalyst composition and comprising carbon substrate particles and nanoparticles comprising platinum disposed on the surface of the substrate particles; and (d) gas diffusion layers disposed over each of the anode and cathode electrocatalyst layers. When operating in a direct methanol fuel cell with an active area of 25 cm2 and under conditions including a supply of IM methanol to the anode electrocatalyst layer at a rate of 3 ml per minute, a supply of air to the cathode electrocatalyst layer at a rate of 400 seem, the membrane electrode assembly provides an output voltage of 0.4 volt and a temperature of 7OoC, provides a power output in excess of 120 mW/cm2 and a normalized performance in excess of 34 mW/mgPt.
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3.发明公开
公开(公告)号：EP2122726A1
公开(公告)日：2009-11-25
申请号：EP08743767.9
申请日：2008-03-11
申请人： Cabot Corporation
发明人： SUN, Yipeng , ATANASSOVA, Paolina , BREWSTER, James , PEREZ, Leonard, P. , LEI, Hanwei , BLIZANAC, Berislav
CPC分类号： H01M4/8605 , H01M4/8652 , H01M4/886 , H01M4/8882 , H01M4/921 , H01M4/926 , H01M8/1011 , Y02E60/523
摘要： In a method of producing a particulate electrocatalyst composition, a precursor medium comprising at least a first metal precursor, a liquid vehicle, and a substrate precursor to substrate particles is atomized into precursor droplets. The droplets are then heated to a reaction temperature of not greater than 700°C to form composite particles comprising said first metal at least partly in an oxide form dispersed on said substrate particles. The composite particles are then collected and are heated at a first treatment temperature no greater than 250°C in the presence of a reducing atmosphere to at least partly convert said oxide form to the metal.
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