JP2014013768A5

JP2014013768A5 -

Info

Publication number: JP2014013768A5
Application number: JP2013182867A
Authority: JP
Filing date: 2013-09-04
Publication date: 2014-04-17
Anticipated expiration: 2029-02-26

Description

（実施例７）
電解質膜支持体として開口部の形成されたメタルマスク（ＳＵＳ製厚さ３０μｍ）を使用した以外は、実施例１と同材料、同条件で膜触媒層接合体Ｍを作製した。 ( Example 7 )
Membrane / catalyst layer assembly M was produced under the same material and under the same conditions as in Example 1 except that a metal mask (30 μm thick made of SUS) having an opening was used as the electrolyte membrane support.

（評価）
実施例１〜７の膜触媒層接合体について、それぞれ触媒層の転写率を測定した。実施例１〜６の膜触媒層接合体については、自己粘着弾性体が電解質膜に固着していたため膜触媒層接合体は湾曲せず、その結果、転写率は１００％と良好であった。 (Evaluation)
About the membrane catalyst layer assembly of Examples 1 to 7 , the transfer rate of the catalyst layer was measured. Regarding the membrane catalyst layer assemblies of Examples 1 to 6, since the self-adhesive elastic body was fixed to the electrolyte membrane, the membrane catalyst layer assembly was not curved, and as a result, the transfer rate was as good as 100% .

また、実施例１〜７の膜触媒層接合体について、目視により電解質膜の触媒層周縁部におけるシワ発生の有無を確認した。実施例１〜６の膜触媒層接合体については、電解質膜の触媒層周縁部にシワは発生していなかった。 Further, the membrane catalyst layer assembly of Example 1-7, to confirm the presence or absence of wrinkle generation in the catalyst layer peripheral portion of the electrolyte membrane visually. About the membrane catalyst layer assembly of Examples 1-6, wrinkles were not generated in the catalyst layer peripheral portion of the electrolyte membrane .

Claims

A catalyst layer transfer sheet intermediate for producing a membrane catalyst layer assembly,
A base sheet;
Bonded to one surface of the base sheet, a frame shape and made so that not opening is formed in the central portion electrolyte membranes support,
A catalyst layer transfer sheet intermediate comprising:

2. The catalyst layer transfer sheet intermediate according to claim 1, wherein the electrolyte membrane support has a 1/4 cone consistency defined by JIS K 6249 of 20 to 150. 3.

2. The catalyst layer transfer sheet intermediate according to claim 1, wherein the electrolyte membrane support has a penetration of 30 to 250 as defined in JIS K2207.

The catalyst layer transfer sheet intermediate according to any one of claims 1 to 3,
A catalyst layer formed on the base sheet inside the opening so as to have the same thickness or less as the electrolyte membrane support; and
A catalyst layer transfer sheet.

Preparing an electrolyte membrane;
Preparing a catalyst layer transfer sheet according to claim 4;
Disposing the catalyst layer transfer sheet on both surfaces of the electrolyte membrane so that the catalyst layer faces the electrolyte membrane;
Transferring the catalyst layer to the electrolyte membrane by heating and pressurizing ;
A process for producing a membrane catalyst layer assembly intermediate comprising

Method of manufacturing a membrane-catalyst layer assembly intermediates containing steps of removing the base sheet of the prepared membrane catalyst layer assembly intermediates by the process of claim 5.

Method of manufacturing a membrane-catalyst layer assembly comprising steps for the release of the membrane support from the electrolyte membrane produced by the production method membrane catalyst layer assembly intermediate of claim 6.

The step of peeling the electrolyte membrane support comprises
A first step of peeling the electrolyte membrane support from one side of the electrolyte membrane;
After the first step, a second step of peeling the electrolyte membrane support from the other surface side of the electrolyte membrane at a temperature of the electrolyte membrane of 40 ° C. or lower;
The manufacturing method of Claim 7 containing these.

A membrane catalyst layer assembly produced by the production method according to claim 7 or 8 ,
A gas diffusion layer laminated on each of the catalyst layers;
A polymer electrolyte fuel cell comprising:

An electrolyte membrane;
A catalyst layer transfer sheet disposed on both surfaces of the electrolyte membrane;
With
The catalyst layer transfer sheet is
A base sheet;
An electrolyte membrane support having an opening formed in the center so as to be bonded to one surface of the base sheet and to have a frame shape;
A catalyst layer formed on the base sheet inside the opening so as to have the same thickness or less as the electrolyte membrane support; and
With
The membrane / catalyst layer assembly intermediate body, wherein the electrolyte membrane support is adhered to the electrolyte membrane, and the catalyst layer is transferred to the electrolyte membrane.

An electrolyte membrane;
An electrolyte membrane support that is bonded to both surfaces of the electrolyte membrane and has an opening formed in the center so as to form a frame,
A catalyst layer transferred onto the electrolyte membrane inside the opening so as to have the same or less thickness as the electrolyte membrane support; and
A membrane catalyst layer assembly intermediate comprising: