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Metal-CO2 battery

A carbon dioxide, battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of electrode passivation, high decomposition overpotential, and unsatisfactory cycle life.

Active Publication Date: 2017-11-17
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the battery is currently facing many challenges. One of the reasons is that the conductivity of alkali metal carbonate is extremely low, and its deposition will lead to passivation of the electrode, and the decomposition overpotential is high, resulting in high polarization and high capacity of the battery. Low, unsatisfactory cycle life
In addition, the alkali metal negative electrode is more active and will react with moisture in the air, resulting in a reduction in battery life.

Method used

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Examples

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Embodiment 1

[0059] After the commercial carbon cloth was hydrothermally reacted in 69wt% concentrated nitric acid at 90°C for 2 hours, it was first washed with deionized water, then ultrasonically cleaned with acetone, alcohol, and deionized water for 15 minutes, and then heated in air at 60°C. Dry for 8h; KMnO 4 Dissolve in deionized water and stir well to obtain K + A solution with a concentration of 0.0005 mol / L, soak the pretreated carbon cloth in the solution for 2 hours, and then conduct a hydrothermal reaction at 85°C for 2.5 hours, then wash with deionized water, and dry at 60°C in the air for 8 hours to obtain a carbon cloth Loaded manganese-containing precursor; the KMnO 4 and IrCl 3 Dissolve in deionized water and stir evenly to obtain K + and Ir 3+ The concentrations were 0.001 mol / L and 0.00025 mol / L mixed solution respectively, the above-mentioned dried carbon cloth loaded with manganese precursor was immersed in the mixed solution for 2 h, then hydrothermally reacted at...

Embodiment 2

[0076] After the commercial carbon cloth was hydrothermally reacted in 69wt% concentrated nitric acid at 90°C for 2 hours, it was first washed with deionized water, then ultrasonically cleaned with acetone, alcohol, and deionized water for 15 minutes, and then heated in air at 60°C. Dry for 8h; KMnO 4 Dissolve in deionized water and stir well to obtain K + A solution with a concentration of 0.0003mol / L, the above pretreated carbon cloth was immersed in the solution for 2 hours, and then hydrothermally reacted at 70°C for 1 hour, then washed with deionized water, and dried at 60°C in the air for 8 hours to obtain a carbon cloth load. The manganese-containing precursor; the KMnO 4 and IrCl 3 Dissolve in deionized water and stir evenly to obtain K + and Ir 3+ The concentrations were 0.0008mol / L and 0.0003mol / L mixed solution respectively, the above dried carbon cloth loaded with manganese precursor was immersed in the mixed solution for 2h, then hydrothermally reacted at 70℃ ...

Embodiment 3

[0080] After the commercial carbon cloth was hydrothermally reacted in 69wt% concentrated nitric acid at 90°C for 2 hours, it was first washed with deionized water, then ultrasonically cleaned with acetone, alcohol, and deionized water for 15 minutes, and then heated in air at 60°C. Dry for 8h; KMnO 4 Dissolve in deionized water and stir well to obtain K + A solution with a concentration of 0.001mol / L, soak the pretreated carbon cloth in the solution for 2 hours, and then react it with water at 90°C for 3 hours, then wash it with deionized water, and dry it in the air at 60°C for 8 hours to obtain a carbon cloth load. The manganese-containing precursor; the KMnO 4 and IrCl 3 Dissolve in deionized water and stir evenly to obtain K + and Ir 3+ The concentrations were 0.0015 mol / L and 0.0002 mol / L mixed solutions respectively. The above-mentioned dried carbon cloth loaded with manganese precursor was immersed in the mixed solution for 2 h, then hydrothermally reacted at 90 ° ...

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Abstract

The invention discloses a metal-CO2 battery. The metal-CO2 battery comprises a positive electrode, a negative electrode, an organic electrolyte and a separator, wherein the positive electrode is an IrO2 / MnO2 composite electrode with a hierarchical structure, comprises sheet-shaped MnO2 and also comprises nanometer IrO2 particles, the sheet-shaped MnO2 is directly grown on a substrate, strip-shaped MnO2 also covers a surface of the sheet-shaped MnO2, the nanometer IrO2 particles are uniformly loaded on the surfaces of the sheet-shaped MnO2 and the strip-shaped MnO2, and the negative electrode is selected from an alkali metal electrode subjected to surface protection processing. The invention discloses the metal-CO2 battery, the IrO2 / MnO2 composite electrode with the hierarchical structure is used as the positive electrode, the alkali metal electrode subjected to surface projection processing is used as the negative electrode, electric energy is generated by greenhouse gas CO2, and the metal-CO2 battery obtained by assembly shows low polarization, high capacity and long cycle lifetime.

Description

technical field [0001] The invention relates to the technical field of novel energy storage batteries, in particular to a metal-carbon dioxide battery. Background technique [0002] A metal-air battery is a new type of energy storage device that uses an alkali metal such as (Li, Na, K) as the negative electrode, a catalyst-loaded collector as the positive electrode, and uses air as the reactive component and an organic electrolyte as the reaction medium. The air referred to broadly includes oxygen, carbon dioxide, sulfur dioxide, nitrogen oxides and other greenhouse gases or gases that cause air pollution. [0003] Among the above-mentioned gases, carbon dioxide is a greenhouse gas, and its massive emission has caused great pressure on the environment. It is of great significance if carbon dioxide in the air can be directly used to generate electricity. Metal-carbon dioxide battery is just a device that can use carbon dioxide to generate electricity. For organic batteries,...

Claims

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Application Information

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IPC IPC(8): H01M12/08H01M4/86H01M4/90H01M4/38
CPCH01M4/381H01M4/8647H01M4/9016H01M4/9083H01M12/08Y02E60/10
Inventor 谢健毛阳俊唐聪曹高劭赵新兵
Owner ZHEJIANG UNIV
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