Sheet silicate mineral and fuel cell including intercalation complex thereof as solid electrolyte membrane

A solid electrolyte membrane, silicate mineral technology, applied in fuel cells, fuel cell additives, fuel cell components, etc., can solve the problems of methanol permeation, degradation of polymer membranes, and inability to improve output power, and achieve easy Preparation, inexpensive effect

Inactive Publication Date: 2005-12-07
LG CHEM LTD +1
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Problems solved by technology

However, if the temperature is increased, the polymer membrane will tend to degrade, and the phenomenon of methanol crossover will become severe, so

Method used

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  • Sheet silicate mineral and fuel cell including intercalation complex thereof as solid electrolyte membrane
  • Sheet silicate mineral and fuel cell including intercalation complex thereof as solid electrolyte membrane
  • Sheet silicate mineral and fuel cell including intercalation complex thereof as solid electrolyte membrane

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Embodiment Construction

[0045] The best way to implement the invention

[0046] If the electrolyte can be produced, it is possible to build on the basis of existing technology such as figure 1 The electrochemical cell is shown, and the fuel cell system is formed by stacking the cells.

[0047] If the density and immersion liquid content are appropriately controlled when producing layered silicate membranes or interlayer compound membranes, fuel permeation can be avoided. Due to the molecular sieve effect of the layered silicate membrane, the two contradictory properties of high proton conductivity and low fuel permeability can be satisfied at the same time.

[0048] according to Figure 7 According to the experimental results, ethanol is the preferred fuel for direct fuel cells using layered silicate membranes. In addition, if the density and immersion liquid content are strictly controlled when producing layered silicate membranes, it is possible to produce layered silicate membranes with solid electro...

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Abstract

The present invention aims to provide a solid proton exchange membrane and a membrane-electrode assembly (MEA) for use in fabricating an inexpensive and efficient proton exchange fuel cell (PEFC) which enables direct use of an organic fuel without a reformer and use of hydrogen gas. In particular, the invention provides an electrochemical cell including a solid electrolyte membrane made of one or plural kinds of layered silicate minerals or the intercalation compounds. The layered silicate minerals can be easily fabricated into a solid electrolyte membrane which shows a 'molecular sieve effect' on the target fuel if the density and impregnated liquid contents are properly controlled. A composite membrane in which a catalyst is directly supported is also fabricated easily. Since the layered silicate mineral is an inorganic material, the fuel cell can be operated at high temperature. Thus, the catalyst can be selected from a wide range of candidate materials. The layered silicate minerals are abundant in nature and inexpensive. The use of the layered silicate mineral allows to fabricate an inexpensive direct methanol fuel cell (DMFC) and a realistic direct ethanol fuel cell (DEFC). Furthermore, an energy-efficient PEFC using hydrogen gas can also be produced therefrom.

Description

Technical field [0001] The invention relates to a solid cation exchange membrane and a membrane electrode assembly, which are used to produce a solid electrolyte fuel cell that can directly supply organic fuel without a conversion device. Background technique [0002] Patent Document 1: Japanese Patent Publication No. Hei 10-507572 [0003] Patent Document 2: Japanese Patent Publication No. 2000-516014 [0004] Non-Patent Document 1: "Fuel Cell Technology", edited by the Subcommittee for Technical Investigation of Next Generation Systems of Fuel Cell Power Generation (Japan Electrical Society), Ohm-sha, August 30, 2002, p.55-98 (Japanese). [0005] Non-Patent Document 2: "New Development of Electrode Catalyst Chemistry", edited by Yoshio Takas, AkikoAramata and Yoshio Hori, published by Hokkaido University Book Press, February 25, 2001, p.207-230, Chapter 9, "Electrocatalyst The New Development of Science" by Masayuki Morita (Japanese). [0006] Non-Patent Document 3: Journal of ...

Claims

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Application Information

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IPC IPC(8): H01M8/1016H01M8/1027H01M8/1037H01M8/1048
CPCY02E60/50
Inventor 竹内康明铃木觉河村雄行佐野充
Owner LG CHEM LTD
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