US 11,988,201 B2
Electrochemical compressor
Satoshi Sugai, Wako (JP)
Assigned to Honda Motor Co., Ltd., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 22, 2023, as Appl. No. 18/112,550.
Claims priority of application No. 2022-048111 (JP), filed on Mar. 24, 2022.
Prior Publication US 2023/0304486 A1, Sep. 28, 2023
Int. Cl. F04B 43/04 (2006.01); C25B 9/19 (2021.01); F04B 19/00 (2006.01); F04B 45/047 (2006.01); B01D 53/32 (2006.01); C25B 1/02 (2006.01); C25B 9/60 (2021.01)
CPC F04B 43/04 (2013.01) [F04B 45/047 (2013.01); B01D 53/32 (2013.01); B01D 53/326 (2013.01); C25B 1/02 (2013.01); C25B 9/19 (2021.01); C25B 9/60 (2021.01); F04B 19/006 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An electrochemical compressor comprising:
an electrolyte membrane;
a cathode electrode provided on one surface of the electrolyte membrane; and
an anode electrode provided on another surface of the electrolyte membrane, wherein the anode electrode includes an anode catalyst layer and an anode current collector, and
a voltage is applied between the cathode electrode and the anode electrode in a state in which a hydrogen gas containing water is supplied to the anode current collector, whereby a high-pressure hydrogen gas having pressure higher than the supplied hydrogen gas containing water is generated at the cathode electrode,
the electrochemical compressor further comprising a flow path member that allows the supplied hydrogen gas containing water to flow from a first end portion to a second end portion of an outer periphery of the anode current collector in a surface direction of the anode current collector,
wherein the anode current collector includes a first surface facing in a direction in which the anode catalyst layer is positioned, and a second surface facing in a direction opposite to the direction in which the anode catalyst layer is positioned,
the anode current collector includes
a plurality of first portions in each of which a first porous body, a second porous body, and a third porous body are sequentially stacked from the first surface toward the second surface, and
a plurality of second portions in each of which the first porous body, the third porous body, and the second porous body are sequentially stacked from the first surface toward the second surface,
a porosity of the second porous body is larger than a porosity of the first porous body,
a porosity of the third porous body is larger than the porosity of the second porous body, and
the plurality of first portions and the plurality of second portions are alternately arranged from the first end portion toward an inner side in the surface direction of the anode current collector.