Title:
炭素ナノチューブ含有燃料電池電極
Document Type and Number:
Japanese Patent JP4908846
Kind Code:
B2
Abstract:
Electrodes for polymer electrolyte membrane and direct methanol fuel cells comprise carbon nanotubes and catalytically active metal. In one embodiment, anode electrodes are prepared by depositing catalytic metal on carbon nanotubes, and forming the carbon nanotubes into a membrane. Anode electrodes comprising carbon nanotubes provide higher fuel cell performance with a much lower platinum loading than conventional carbon-based electrode material having a much higher platinum loading. In another embodiment, a catalyst ink comprising carbon nanotubes and a catalytic metal-loaded carbon powder was used to form an electrode membrane. The catalyst ink comprising carbon nanotubes and catalyst-loaded carbon powder can optionally comprise an ionically conductive polymer, such as a perfluorosulfonic acid/PTFE copolymer. In another embodiment, a fuel cell electrode comprising carbon nanotubes and catalytically active metal is a free-standing electrode. In another embodiment of a membrane electrode assembly, carbon nanotubes are sandwiched between a catalyst-loaded electrode and a polymer electrolyte membrane.
Inventors:
MacEllas, Kenneth, Oh.
Smith, Kenneth, A.
Barr, Jeffrey, Elle.
Weinerdi, Thomas, Jay.
Carol, David, A.
Colbert, Daniel, Tee.
Miller, Michael, A.
Oviat, Henry, W.
Klein, Eric, Di.
Smith, Kenneth, A.
Barr, Jeffrey, Elle.
Weinerdi, Thomas, Jay.
Carol, David, A.
Colbert, Daniel, Tee.
Miller, Michael, A.
Oviat, Henry, W.
Klein, Eric, Di.
Application Number:
JP2005516933A
Publication Date:
April 04, 2012
Filing Date:
October 31, 2003
Export Citation:
Assignee:
Samsung Electronics Co.,Ltd.
International Classes:
H01M4/96; B01J21/18; B01J23/16; B01J23/38; B01J23/42; B01J23/74; B01J32/00; B01J35/06; B01J37/02; B01J37/16; B01J37/18; B05D5/12; H01M4/86; H01M4/88; H01M4/90; H01M4/92; H01M8/10; C01B31/02
Domestic Patent References:
| JP2000511864A | ||||
| JP2002102694A | ||||
| JP2002083604A | ||||
| JP2002515847A |
Foreign References:
| WO2002075831A1 |
Attorney, Agent or Firm:
Hatta International Patent Corporation