Electrochemical reaction power generation system

Abstract

The invention belongs to the technical field of fuel cells, particularly relates to an electrochemical reaction power generation system, and solves the problems that an existing electrochemical reaction power generation system adopting gaseous fuel needs high pressure, and a fuel storage tank is large in size, not easy to obtain and poor in safety. An independent constant-temperature environment fuel concentration detection branch is used, the concentration detection stability and accuracy are high and is not influenced by external environment temperature, has the capability of directly inputting fuel with the concentration of 100% into the system for power generation reaction, has an automatic operation strategy of online reduction of an oxidation state of an electrochemical catalyst into a metal state, greatly improves the catalytic activity of the electrochemical catalyst, and greatly prolongs the service life of the electrochemical catalyst. According to the power generation device, the fuel concentration in the internal fuel circulation system is automatically adjusted by detecting the environment temperature and humidity, so that the system can be stably operated under different temperature conditions, and the self-starting capacity of an extremely-low-temperature system without external environment control facility support is achieved.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to an electrochemical reaction power generation system. Background technique [0002] Electrochemical reaction power generation is to directly convert the chemical energy of fuel into electrical energy, which has the characteristics of high energy conversion efficiency and environmental friendliness. There are two types of fuel for electrochemical reactions: gaseous and liquid. Gaseous fuels such as hydrogen have high energy density, but they have a large storage volume and require special-shaped high-pressure containers for storage. They are used on equipment or instruments with limited installation space. There are difficulties, and the ratio of the mass of the gaseous fuel stored in the high-pressure vessel to the mass of the vessel itself is very low, generally lower than 9%. Liquid fuels such as low-carbon alcohols, including methanol, ethanol, etc., also have t...

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Problems solved by technology

[0003] Aiming at the problems in the prior art, the present invention provides an electrochemical power generation device, which solves the problems that the existing electrochemical reaction power generation system using gaseous fuel needs high pressure, the fuel storage tank has a large volume, is not easy to obtain, and has poor safety. The system structure and operation method realize the low-temperature storage, start-up and operation of the system body, and periodically reduce the oxidized catalyst, which greatly improves the life and performance stability of the system