`
`1. An electrochemical hydrogen pump comprising:
`an
`
`surface of the
`
`surface of the
`
`electrolyte membrane;
`electrolyte membrane; and
`
`electrolyte membrane;
`an anode on a first
`
`primary
`a cathode on a second
`
`primary
`on the anode, wherein
`an anode separator
`on the first primary surface of
`the anode includes an anode catalyst layer
`the electrolyte membrane and an anode gas diffusion layer
`on the anode catalyst
`layer, and
`the anode gas diffusion layer includes a porous carbon sheetthatis a
`molded
`
`powder
`
`body.
`
`2. An electrochemical
`
`hydrogen pump comprising:
`
`an
`
`electrolyte membrane;
`an anode on a first primary surface of the electrolyte membrane;
`a cathode on a second primary surface of the electrolyte membrane; and
`on the anode, wherein
`an anode separator
`on the first primary surface of
`the anode includes an anode catalyst layer
`the electrolyte membrane and an anode gas diffusion layer
`on the anode catalyst
`
`layer,
`
`the anode gasdiffusion
`
`includes a
`
`porous carbon sheet whose first
`
`surface
`
`layer,
`
`amorphous carbon,
`
`layer
`which is closer to the anode separator, contains
`
`and
`
`>
`
`1.0.
`
`wherein the porous carbon sheet is analyzed by Raman spectroscopy, D/G
`
`3. The electrochemical hydrogen pump according to Claim 1, wherein the
`porous carbon sheet has a
`Young's modulus in a direction of thickness higher than
`or
`to 2.5 GPa at least in a first surface
`which is closer to the anode
`
`layer,
`
`equal
`separator, thereof.
`
`4. The electrochemical hydrogen pump according to Claim 1, wherein the
`porous carbon sheet has a
`Young's modulus in a direction of thickness higher than
`35
`
`P1023473
`
`
`
`or
`
`equal to 7.8 GPa at least in a first surface layer, which is closer to the anode
`separator, thereof.
`
`5. The electrochemical
`
`to Claim 1, wherein the
`hydrogen pump according
`than or
`porous carbon sheet has a flexural
`least in a first surface
`
`strength higher
`equal
`which is closer to the anode separator, thereof.
`
`to 10 MPa at
`
`layer,
`
`6. The electrochemical hydrogen pump according to Claim 1, wherein the
`porous carbon sheet has a flexural strength higher than or
`to 20 MPa at
`equal
`least in a first surface layer, which is closer to the anode separator, thereof.
`
`7. The electrochemical
`
`porous carbon sheet has a
`
`to Claim 1, wherein the
`hydrogen pump according
`lower than or
`to 45% atleast in a first
`
`porosity
`equal
`which is closer to the anode separator, thereof.
`
`surface
`
`layer,
`
`8. The electrochemical hydrogen pump according to Claim 1, wherein the
`to 39% atleastin a first
`porous carbon sheet has a
`porosity lower than or
`equal
`surface layer, which is closer to the anode separator, thereof.
`
`9. The electrochemical hydrogen pump according to Claim 7, wherein the
`lower than or
`to 45% in a second
`porous carbon sheet has a
`
`porosity
`
`equal
`
`surface
`
`layer,
`
`which is closer to the anode
`
`catalyst layer,
`
`thereof.
`
`10. The electrochemical hydrogen pump according to Claim 8, wherein the
`to 39% in a second
`porous carbon sheet has a
`porosity lower than or
`equal
`surface layer, which is closer to the anode catalyst layer, thereof.
`
`11. The electrochemical hydrogen pump according to Claim 1, wherein the
`porous carbon sheet has higher rigidity in a first surface layer, which is closer to
`thereof than in a
`the anode
`under the first surface
`
`separator,
`
`layer lying
`
`layer.
`
`12. The electrochemical
`
`to Claim 11, wherein
`hydrogen pump according
`the porous carbon sheethas higher rigidity in a second surface layer, which is
`closer to the anode catalyst layer, thereof than in a
`layer lying under the second
`36
`
`P1023473
`
`
`
`surfacelayer.
`
`layer,
`
`13. The electrochemical hydrogen pump according to Claim 1, wherein the
`in a first surface
`porous carbon sheet has a lower
`which is closer to
`porosity
`the anode separator, thereof than in a
`
`layer lying
`
`under the first surface
`
`layer.
`
`14. The electrochemical hydrogen pump according to Claim 13, wherein
`the porous carbon sheet has a lower porosity in a second surface layer, which is
`closer to the anode catalyst layer, thereof than in a
`layer lying under the second
`surfacelayer.
`
`15. The electrochemical
`
`porous carbon sheet has a
`
`electrolyte
`
`membrane.
`
`to Claim 1, wherein the
`hydrogen pump according
`peak pore diameter smaller than a thickness of the
`
`16. The electrochemical hydrogen pump according to Claim 1, wherein the
`porous carbon sheet has an overall porosity higher than or
`to 20%.
`
`equal
`
`17. The electrochemical hydrogen pump according to Claim 1, wherein a
`second surface layer, which is closer to the anode catalyst layer, of the anode gas
`diffusion
`is
`
`layer
`
`water-repellent.
`
`18. The electrochemical
`
`to Claim 1, wherein a
`hydrogen pump according
`first surface layer, which is closer to the anode separator, of the anode gas
`diffusion layer is hydrophilic.
`
`3/7
`
`P1023473
`
`
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