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Catalyst-supporting substrate, method of manufacturing the same, membrane electrode assembly, and fuel cell

A manufacturing method and catalyst technology, applied in the direction of solid electrolyte fuel cells, fuel cells, battery electrodes, etc., can solve problems such as insufficient durability, and achieve the effect of high durability and high-quality activity

Active Publication Date: 2015-03-11
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is insufficient in terms of durability, etc.

Method used

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  • Catalyst-supporting substrate, method of manufacturing the same, membrane electrode assembly, and fuel cell
  • Catalyst-supporting substrate, method of manufacturing the same, membrane electrode assembly, and fuel cell
  • Catalyst-supporting substrate, method of manufacturing the same, membrane electrode assembly, and fuel cell

Examples

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Embodiment

[0066] (Preparation of Catalyst Supporting Substrates in Examples 1-21)

[0067] According to the conditions described in Table 1 below, the catalyst-carrying substrates of Examples 1 to 21 were prepared. Specifically, it was manufactured as follows.

[0068] As a substrate, carbon paper (manufactured by Toray Corporation, trade name: Toray 060) was prepared. The substrate has a carbon layer with a thickness of 5-50 μm on its surface. To this substrate, in each example, the first material having the composition shown in Table 1 was sputtered. Furthermore, as described above, in each example, the second material having the composition shown in Table 1 was sputtered. The sputtering of the first material and the sputtering of the second material were repeated until the supported amount and the thickness of the catalyst layer shown in Table 1 were obtained in each Example. To be explained, 0.2mg / cm 2 The Pt loading corresponds to an average Pt thickness of about 100 nm. Thus...

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Abstract

According to one embodiment, a catalyst-supporting substrate comprises a substrate and a catalyst layer including a plurality of pores, the catalyst layer being supported on the substrate. The average diameter of the section of the pore when the catalyst is cut in the thickness direction of the thickness is 5 nm to 400 nm, and the long-side to short-side ratio of the pore on the section is 1:1 to 10:1 in average.

Description

[0001] related application [0002] This application is based on Japanese Patent Application No. 2011-209858 (filing date: September 26, 2011), and enjoys the priority of this application. This application incorporates the entire contents of this application by reference thereto. technical field [0003] Embodiments of the present invention relate to a catalyst-carrying substrate, a manufacturing method thereof, a membrane-electrode assembly, and a fuel cell. Background technique [0004] The amount of platinum used in the electrode catalyst of the current solid polymer fuel cell (PEFC) is about 1 g Pt / kW for fuel cell vehicle (FCV) applications, and 5 to 8 g Pt / kW for stationary applications. Considering the current market price of platinum, this means that the cost of the platinum group metal as the electrode catalyst of the FCV needs to be hundreds of thousands of yen per unit. The goal is to reduce the use of platinum to about 1 / 10 of the current level until the initia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/88H01M8/10
CPCH01M2008/1095H01M4/92H01M4/9041H01M4/9016Y02E60/50H01M4/8605H01M4/8867H01M4/8871
Inventor 深沢大志梅武赤坂芳浩吉永典裕
Owner KK TOSHIBA
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