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Method of making an electrochemical cell with a catalytic electrode including manganese dioxide

A catalytic electrode and electrochemical technology, applied in the direction of manganese oxide/manganese hydroxide, battery electrodes, fuel cell half-cells and primary battery half-cells, etc.

Inactive Publication Date: 2014-08-13
EVEREADY BATTERY CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that there are impurities directly mixed with carbon in the sol and undesired reaction products, and the type of manganese oxide catalyst can vary depending on the reaction temperature

Method used

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  • Method of making an electrochemical cell with a catalytic electrode including manganese dioxide
  • Method of making an electrochemical cell with a catalytic electrode including manganese dioxide
  • Method of making an electrochemical cell with a catalytic electrode including manganese dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Provided with Mn 2 o 3 and Mn 3 o 4 Mixture of conventional manganese oxide (MnO x )catalyst.

Embodiment 2

[0075] Nano manganese oxide (QSI-NANO) disclosed in U.S. Patent Application Publication No 2008 / 0280190 Manganese manganese dioxide powder) was obtained from QuantumSphere Inc. (QSI) of Santa Ana, California, USA.

Embodiment 3

[0077] Permanganite manganese dioxide was prepared by refluxing manganese sulfate (Example 3A) with potassium permanganate in an aqueous acid solution in a manner similar to that disclosed in US Patent Application Publication No. 2007 / 0111095 Al. MnSO 4 ·H 2 O (13.52g) was dissolved in deionized water (80cc), KMnO 4 (8.8g) was dissolved in deionized water (300cc). MnSO with nitric acid 4 Adjust the pH of the solution to about 1.0; slowly add KMnO while maintaining the pH at about 1.0 4 solution; the resulting mixed solution was refluxed at about 100° C. for about 24 hours; the resulting precipitate was filtered, washed and dried at room temperature. In addition to using manganese acetate (Mn(C 2 h 3 o 2 ) 2 )·4H 2 O) In addition to replacing the above-mentioned manganese sulfate (embodiment 3B), the manganese ore type manganese dioxide was prepared in the same way.

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Abstract

The present invention relates to a method for the manufacture of an electrochemical cell having a catalytic electrode comprising a catalyst prepared by a redox reaction between a water-soluble oxidizing agent and a reducing agent using a solution precipitation method In one embodiment, at least one of the oxidizing agent and the reducing agent comprises manganese. The reaction is carried out at a temperature below 65°C, preferably with little or no heating. The oxidizing agent does not contain cations that are reduced in the reaction, and the reducing agent does not contain anions that are reduced in the reaction.

Description

technical field [0001] The invention relates to a method for producing an electrochemical cell, such as a fuel cell or a metal-air battery, having a catalytic electrode comprising an oxygen-reducing catalyst. Background technique [0002] Electrochemical cells can be used to provide electrical energy to operate electronic devices. When used to operate electronic devices, since these batteries use oxygen from outside the battery as the active material, the size of the oxygen-consuming electrodes (such as the positive or negative electrodes) is reduced, allowing a larger space within the battery to accommodate the counter electrode (such as the negative or Anode) and electrolyte space, so it is very favorable. Mixed metal-air batteries, sometimes referred to as air-assisted batteries, have a positive electrode, a negative electrode with active materials contained within the battery, and an auxiliary catalytic electrode that reduces oxygen from outside the battery as an active...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M12/06H01M4/88C01G45/02
CPCC01P2004/64C01G45/02B82Y30/00H01M4/8825H01M4/8875C01P2004/62C01P2002/54C01P2002/72C01P2006/12H01M4/9016C01P2004/17Y02E60/50H01M4/8803H01M12/06H01M4/90H01M4/88
Inventor 郭敬东
Owner EVEREADY BATTERY CO INC