Fuel cell flow plate

Patent metadata

Field	Value
Publication number	US-2016329574-A1
Application number	US-201415108769-A
Country	US
Kind code	A1
Filing date	Dec 17, 2014
Priority date	Dec 31, 2013
Publication date	Nov 10, 2016
Grant date	—

Abstract

A fuel cell flow plate having a first layer ( 12 ) comprising an electrically conductive hydrophobic layer; and a second layer ( 13 ) comprising a graphene coating.

First claim

1 . A fuel cell flow plate having:
a first layer comprising an electrically conductive hydrophobic layer; and a second layer comprising a graphene coating.

2 . A fuel cell flow plate according to claim 1 , in which the first layer is anisotropically electrically conductive.

3 . A fuel cell flow plate according to claim 2 , in which the first layer is arranged to lie in a plane on the fuel cell flow plate and be electrically conductive in a direction through the plane and less conductive in a direction in the plane.

4 . A fuel cell flow plate according to claim 3 , in which the first layer is non-conductive in the plane.

5 . A fuel cell flow plate according to claim 1 , in which the first layer comprises a polymer having conductive particles dispersed therein.

6 . A fuel cell flow plate according to claim 1 , in which the first layer comprises an acrylic tape.

7 . A fuel cell flow plate according to claim 1 , in which the tape includes a pressure sensitive adhesive.

8 . A fuel cell flow plate according to claim 1 , in which the second layer comprises a graphene coating of less than ten graphene layers.

9 . A fuel cell flow plate according to claim 1 , in which the first layer is hydrophobic with a contact angle of greater than 90°.

10 . A fuel cell flow plate according to claim 1 , in which the fuel cell flow plate is of metal and the first layer is disposed thereon with the second layer coating the first layer.

11 . A fuel cell flow plate according to claim 1 , in which the fuel cell flow plate comprises an anode flow plate.

12 . A fuel cell including a flow plate as defined in claim 1 .

13 . A method of manufacturing a fuel cell flow plate comprising the steps of;
receiving a flow plate base; receiving a first layer comprising an electrically conductive hydrophobic layer; receiving a second layer comprising a graphene coating; forming a fuel cell flow plate by applying the first and second layers to the flow plate base.

14 . The method of claim 13 , in which the first layer comprises an adhesive tape and the method includes the step of applying the tape to a fuel cell flow plate base.

15 . The method of claim 14 , in which the method includes the step of applying the graphene coating to the tape prior to applying the tape to the flow plate base.

Assignees

• Intelligent Energy Ltd

Inventors

• Ostadi Hossein

Classifications

• H01M8/0213

  Gas-impermeable carbon-containing materials · CPC title

• H01M8/0221

  Organic resins; Organic polymers · CPC title

• H01M8/0206

  Metals or alloys · CPC title

• H01M8/0228 Primary

  in the form of layered or coated products · CPC title

• Y02E60/50

  Fuel cells · CPC title