Generating and energy storage integrated device based on direct carbon fuel cells (DCFCs) with liquid metal positive electrode

Abstract

The invention belongs to the field of fuel cells, and particularly relates to a generating and energy storage integrated device based on direct carbon fuel cells (DCFCs) with a liquid metal positive electrode. The generating and energy storage integrated device comprises a metal molten pool, the liquid metal positive electrode, the tubular solid oxide direct carbon fuel cells (SO-DCFCs) and a fluidization air distributing feeding system, wherein the tubular SO-DCFCs can be blind pipes and through pipes and can be inserted into the metal molten pool vertically or horizontally; the feeding system carries a fuel and a positive electrode material into the metal molten pool by virtue of carrier gas, and substances in the molten pool are stirred. The generating and energy storage integrated device provided by the invention has the advantages that chemical energy in the fuel and surplus electric energy in an power grid are changed into chemical energy in the liquid metal positive electrode to be stored, and the integration of a generating device and an energy storage device is realized; the integrated device is simple and compact, the reactivity of the carbon fuel and the metal positive electrode is high, the property of the cell is good, the friction of the cell caused by liquid state positive electrode fluidization is small, the service life of the cell is long, the seal is easy, the collection is convenient, and a large-scale electric pile is convenient to form.

Description

Technical field [0001] The invention belongs to the field of fuel cells, and in particular relates to an integrated device for power generation and energy storage based on a liquid metal anode direct carbon fuel cell. Background technique [0002] A fuel cell is a power generation device that directly converts the chemical energy in the fuel into electrical energy. Solid oxide direct carbon fuel cell (Solid Oxide Direct Carbon Fuel Cell, SO-DCFC) is a type of fuel cell. It uses structured solid oxide ceramics as the electrolyte to directly transfer the chemical energy of solid carbon fuel through electrochemical reactions. , Continuously converted into electric energy, with high efficiency, CO 2 The outstanding advantages of easy separation, wide fuel sources, stable electrolyte structure, and low fuel processing requirements will help relieve the shortage of oil and gas resources in my country and reduce CO 2 Dealing with energy consumption and ensuring national energy security ...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems existing in current carbon fuel cells such as inability to continuously feed materials, low reaction rate of carbon fuel, poor electrochemical reaction conditions, and low battery performance, and proposes an integrated power generation and energy storage device based on a liquid metal anode direct carbon fuel cell , mainly including: metal molten pool shell 7, tubular solid oxide fuel cell unit 6, liquid metal anode 9, and fluidized air distribution feed material composed of feed blower 1, material lock hopper 2, and feed pipe 3 system;

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