Direct carbon fuel cell using eutectic fusible hydroxide mixture as electrolyte

Abstract

The invention discloses a direct carbon fuel cell using a eutectic fusible hydroxide mixture as electrolyte. The direct carbon fuel cell comprises a reaction apparatus, an anode plate cabin, a cathode plate cabin, an anode, a cathode, an anode collector plate, a cathode collector plate, a micropore partition plate, a cathode pipeline, an air circulating apparatus, a gas-saving sheet, electrolyte and carbon fuel; the electrolyte adopts the eutectic fusible hydroxide mixture, so that the conductivity of the whole electrolyte can be improved, the activity of the electrolyte is improved, the full contact between electrode interfaces and reaction interfaces, and the stripping of the interface solid products are facilitated, and the ohmic resistance and the activation resistance are reduced; the cathode adopts a nickel lanthanum composite material and is processed into a multi-dimensional three-dimensional shape, so that the electrochemical reaction within unit space can be effectively improved; and a mixed gas of oxygen including no less than 35 % of vapor based on concentration, or a mixed gas of air including no less than 35 % of vapor based on concentration is adopted for the cathode air intake, so that the hydroxyl consumption in the electrolyte can be effectively avoided.

Description

technical field [0001] The invention relates to the field of direct carbon fuel cell preparation, in particular to a direct carbon fuel cell using eutectic molten hydroxide mixture as electrolyte. Background technique [0002] Energy is the backbone of the human economy and the necessary driving force for social activities. At present, the primary power required for social activities is mainly obtained through heat engines, and then converted into electrical energy. Since the heat engine is limited by the Carnot cycle, it is difficult to improve the efficiency, which causes problems such as energy waste and increased pollution emissions. Therefore, the development of efficient and clean electric energy acquisition methods is called the inevitable direction of energy development. [0003] Direct carbon fuel cell (DCFC) uses solid carbon as fuel, and converts chemical energy directly into electrical energy, which has the following advantages: directly and efficiently utilize...

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Problems solved by technology

[0009] The above-mentioned documents mentioned different electrolyte fuel cells, each with its own defects. The solid oxide fuel cell has high requirements on the temperature control system, and needs to be switched continuously at high and low temperatures to make the device react completely; molten carbonate electrolyte Fuel cells require a high reaction temperature, and Boudouard reaction is prone to occur at high temperature, that is, carbon and carbon dioxide undergo a chemical reaction at high temperature to produce carbon monoxide gas; molten hydroxide is highly corrosive

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