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Indirect methanol fuel cell device based on heteropoly compound energy storage

A technology of methanol fuel cells and heteropoly compounds, applied in the direction of indirect fuel cells, etc., which can solve the problems of high system equipment requirements and increased system energy consumption

Inactive Publication Date: 2012-05-23
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the oxidation reaction of CO needs to be carried out under high pressure in this cycle process, which increases the energy consumption of the system and has higher requirements on the system equipment.

Method used

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  • Indirect methanol fuel cell device based on heteropoly compound energy storage
  • Indirect methanol fuel cell device based on heteropoly compound energy storage
  • Indirect methanol fuel cell device based on heteropoly compound energy storage

Examples

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Embodiment Construction

[0016] A certain concentration of methanol 2 solution, the solvent is water (in this example, the concentration of methanol is 0.1M, but it is not limited to this). After coming out of the fuel storage tank, it is transported to the intermediate reactor 6 after being measured by the liquid delivery pump 3 and the mass flow meter 4 , in the intermediate reactor 6, a stirring device 9 and a heat exchanger 11 are provided. In the initial start-up stage, the heat exchanger feeds hot water to provide a certain amount of heat, so that the temperature of the intermediate reactor 6 reaches the optimum working temperature. That is, between 60-90°C, after entering the operation stage, the heat exchanger 11 is fed with condensed water to replace the heat in the methanol oxidation reactor and maintain a constant temperature. After the methanol transported by the pump 3 reaches the intermediate reactor 6 , using the stirrer 9 to fully mix the methanol solution, the heteropoly compound and t...

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Abstract

The invention discloses an indirect methanol fuel cell device based on heteropoly compound energy storage, belonging to the field of new energy resources. In order to solve the problems of overhigh cost of an electrode catalyst of a direct methanol fuel cell, catalyst damage caused by intermediate products, mixed potential generated by methanol permeating in a cathode, reduced performance of the cell, environment pollution, and the like, the invention provides a fuel cell system in which a heteropoly compound stores methanol energy and discharge cycle is carried out on the fuel cell, an intermediate reactor is arranged in a direct methanol fuel cell system, the heteropoly compound is used for oxidizing the methanol under the action of a catalyst in the intermediate reactor, the methanol energy is stored in a reduction-state heteropoly compound in forms of protons and electrons, then the reduction-stage heteropoly compound is separated and then is conveyed to an anode of the fuel cell to be oxidized for recycling, and the recycled heteropoly compound is sent to the intermediate reactor to react with the methanol so as to be recycled. The invention is suitable for power generation of a stationary electric power plant, or other portable and distributed power supply systems.

Description

Technical field: [0001] The invention belongs to the field of new energy. It relates to a fuel cell device which uses heteropoly compounds to store methanol energy and performs a discharge cycle on a fuel cell stack, and is suitable for power generation in fixed power stations or other portable and distributed power systems. Background technique: [0002] Fuel cell power generation is the fourth type of power generation technology after hydropower, thermal power and nuclear power generation. Because it is a power generation device that directly converts the chemical energy of fuel into electrical energy by electrochemical reaction without combustion, theoretically speaking, as long as the fuel is continuously supplied, the fuel cell can continuously generate electricity. Fuel cells have the advantages of high power generation efficiency and low environmental pollution, and are very suitable for use as centralized or regionally distributed power plants, or as on-site power p...

Claims

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Application Information

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IPC IPC(8): H01M8/20
CPCY02E60/528Y02E60/50
Inventor 米万良贾冬梅
Owner UNIV OF SCI & TECH BEIJING
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