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Reduced catalyst of mono fluorin, and preparation method and usage

A compound, a1-xmxb1-ynyo3 technology, applied in the field of electrochemistry and inorganic material synthesis, can solve the problems of complex and time-consuming preparation process, high energy consumption and other problems, and achieve the effect of obvious characteristic diffraction peaks, saving time and less impurity peaks

Inactive Publication Date: 2006-12-06
WUHAN HONGYUAN WEILI NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The liquid phase reaction method needs to go through the process of precipitation-filtering-washing-drying-high-temperature sintering-crushing, etc. The preparation process is complicated and time-consuming, and consumes a lot of energy.

Method used

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  • Reduced catalyst of mono fluorin, and preparation method and usage
  • Reduced catalyst of mono fluorin, and preparation method and usage
  • Reduced catalyst of mono fluorin, and preparation method and usage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] LaMnO 3 Synthesis, accurately weigh Mn 2 o 3 1.578g, La 2 o 3 2. Put 826g into the ball mill tank, put 12 stainless steel balls with a diameter of 8 mm and 8 stainless steel balls with a diameter of 10 mm, place the reaction tank on a swing vibration ball mill, and perform a swing vibration ball mill for 6 hours at room temperature, remove the stainless steel balls, and take out the catalyst Sealed for later use.

Embodiment 2

[0035] La 0.8 Sr 0.2 MnO 3 Synthesis, accurately weighed La 2 o 3 3.258g, Mn 2 o 3 1.578g, SrO 0.518g, MnO 2 0.435g. Rocking vibration ball milling for 2 hours, other steps as in Example 1.

Embodiment 3

[0037] La 0.8 Ca 0.2 MnO 3 Synthesis, accurately weighed La 2 o 3 3.258g, Mn 2 o 3 1.578g, CaO 0.28g, MnO 2 0.435g. Rocking vibration ball milling for 2 hours, other steps as in Example 1.

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PUM

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Abstract

An oxygen reducing catalyst is prepared from lanthanum oxide, praseodymium oxide, strontium oxide, calcium oxide, MnO2, Mn2O3, Fe2O3, Co3O4, nickel oxide and chromium oxide through swinging-vibrating type ball grinding while reaction for 0.5-12 hr. Its chemical formula is ABO3 or A1-xMxB1-yO3. It can be used to prepare air electrode with high oxygen reducing power in air and high stability in alkaline medium.

Description

technical field [0001] The invention discloses a novel oxygen reduction catalyst, its preparation method and application, which belongs to the technical field of electrochemistry and also belongs to the technical field of inorganic material synthesis. Background technique [0002] Zinc-air fuel cells have the advantages of high specific energy (theoretical specific energy reaches 1350Wh / kg), stable working voltage, wide working temperature range, cheap and easy-to-obtain raw materials, and are environmentally friendly, and the battery reaction products are easy to regenerate and utilize. In the present age of energy shortage, it is one of the important energy sources that people pay close attention to, and it is called "green energy for the 21st century". It is widely used in navigation lights, unmanned observation stations, radio relay stations, radio transceivers, electric vehicles, mobile communication equipment and other fields. The emergence of a large number of portab...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J23/70B01J23/10B01J23/02B01J23/34
Inventor 李升宪李萍胡晓宏
Owner WUHAN HONGYUAN WEILI NEW ENERGY TECH
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