Collector member, power generator, and method of manufacturing collector member for power generator

Patent metadata

Field	Value
Publication number	US-9972849-B2
Application number	US-201414515245-A
Country	US
Kind code	B2
Filing date	Oct 15, 2014
Priority date	Sep 24, 2009
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

According to an aspect of the present invention, there is provided a collector member 10 comprising a sheet-shaped base material 11 having a carbon-containing fiber 11 a and catalyst particles 12 adhered to an outer periphery of the fiber 11 a, containing a noble metal or an alloy thereof, and having an average particle diameter of 0.1 to 2 μm.

First claim

The invention claimed is:

1. A method of manufacturing a collector member, comprising:
growing a carbon fiber on a substrate formed of carbon to form an intermediate layer;
forming a first catalyst layer on the intermediate layer;
arranging a proton-conducting membrane on the first catalyst layer;
pressure-bonding the first catalyst layer and the proton-conducting membrane under heating;
peeling the substrate to transfer the intermediate layer and the first catalyst layer on a proton-conducting membrane side;
forming a second catalyst layer on the intermediate layer after the transfer of the intermediate layer and the first catalyst layer on the proton-conducting membrane side; and
arranging a first sheet-shaped base material on the second catalyst layer and pressure-bonding the second catalyst layer and the first sheet-shaped base material under heating.

2. The method of manufacturing a collector member according to claim 1 , further comprising forming a third catalyst layer on one surface of the proton-conducting membrane, the one surface being opposite to the surface thereof on which the first catalyst layer is formed.

3. The method of manufacturing a collector member according to claim 2 , further comprising arranging a second sheet-shaped base material on the third catalyst layer and pressure-bonding the third catalyst layer and the second sheet-shaped base material under heating.

4. The method of manufacturing a collector member according to claim 2 , further comprising incorporating a proton conductor into the second catalyst layer after the formation of the second catalyst layer.

5. The method of manufacturing a collector member according to claim 1 , further comprising incorporating a proton conductor into the intermediate layer and the first catalyst layer after the transfer of the intermediate layer and first catalyst layer and before the formation of the second catalyst layer.

6. The method of manufacturing a collector member according to claim 1 , wherein the intermediate layer has a thickness of 100 nm or more and 10 μm or less.

7. The method of manufacturing a collector member according to claim 1 , wherein the carbon fiber is a carbon nanofiber or a carbon nanotube.

Assignees

• Toshiba Kk

Inventors

• Yamazaki Mutsuki
• Nakano Yoshihiko
• Mei Wu

Classifications

• H01M4/926

  on carbon or graphite · CPC title

• H01M8/0234

  Carbonaceous material · CPC title

• H01M4/8605 Primary

  Porous electrodes · CPC title

• H01M4/8875 Primary

  Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support · CPC title

• Y02P70/56

  Cross-Sectional Technologies · mapped topic