A cathode material of potassium ferrate battery

A technology of potassium ferrate and cathode material, applied in battery electrodes, alkaline storage batteries, circuits, etc., can solve the problem of less than 40% discharge efficiency, and achieve the effect of improving utilization efficiency

Inactive Publication Date: 2008-07-09
DAQING GASOLINEEUM INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, potassium ferrate is used as the active material of the cathode material, and 3500 mesh graphite is used as the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 0.280g potassium ferrate, 0.082g graphite (3500 mesh), 0.02g mordenite Na[AlSi 40 o 96 ]·24H 2 O, 0.018g MnO 2 Mix evenly, and add 0.018g of 14mol / L KOH solution, and press into tablets to obtain the cathode material of high-speed iron battery; take 0.3g of zinc paste and directly use it as the anode material of high-speed iron battery; separate the two materials with a polypropylene separator, and assemble Prepared Zn-K 2 FeO 4 -MnO 2 Battery. The open circuit voltage of the battery is 1.77V, the average discharge voltage is 1.3-1.5V, and the discharge efficiency of the active material of the cathode material of the battery is 83.75%.

Embodiment 2

[0020] 0.292g potassium ferrate, 0.070g graphite (3500 mesh), 0.012g mordenite Na 8 [AlSi 5 o 12 ]·3H 2 O, 0.028g MnO 2 Mix evenly, add 0.018g of 12mol / L KOH solution, and press into tablets to obtain the cathode material of high-speed iron battery; take 0.3g of zinc paste and directly use it as the anode material of high-speed iron battery; separate the two materials with a polypropylene diaphragm, and assemble Prepared Zn-K 2 FeO 4 -MnO 2 Battery. The open circuit voltage of the battery is 1.75V, the average discharge voltage is 1.3-1.5V, and the discharge efficiency of the cathode material active material of the battery is 79.72%.

Embodiment 3

[0022] 0.300g potassium ferrate, 0.062g graphite (3500 mesh), 0.016g ZSM-5 molecular sieve, 0.024gMnO 2 Mix evenly, and add 0.018g of 10mol / L KOH solution, and press into tablets to obtain the cathode material of high-speed iron battery; take 0.3g of zinc paste and directly use it as the anode material of high-speed iron battery; separate the two materials with a polypropylene separator, and assemble Prepared Zn-K 2 FeO 4 -MnO 2 Battery. The open circuit voltage of the battery is 1.72V, the average discharge voltage is 1.3-1.5V, and the discharge efficiency of the active material of the cathode material of the battery is 75.56%.

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PUM

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Abstract

The invention provides a material used for a cathode for a super-iron battery. The material includes 65 to 80wt percent of potassium ferrate, 10 to 25wt percent of conductive material, 1 to 10 wt percent of additive and 4 to 8wt percent of electrolyte according to weight percentage, wherein, the additive consists of 40 to 60 percent of silicon aluminate and 60 to 40 percent of manganese dioxide according to weight percentage, the conductive material is one of graphite and acetylene black with 3000 to 4000 meshes, the electrolyte is the KOH water solution with 10 to 14mol/L, and the discharging efficiency of the super-iron battery which is produced by using the cathode material is obviously improved.

Description

Technical field: [0001] The invention relates to a ferrate battery, in particular to the material used for the cathode of the potassium ferrate battery. Background technique: [0002] In 1999, Professor Licht announced the Super-iron Battery (Super-iron Battery). In the Super-iron battery, the cathode material is a non-toxic iron-based compound, and iron exists in the form of a +6 valence compound. The theoretical specific capacity is 406mAh / g, than MnO 2 At least 32% higher, because the final reduction product of ferrate is iron hydroxide with certain flocculation and decontamination ability, there is no secondary pollution problem of existing waste batteries, and iron resources in nature are extremely abundant, cheap and easy to get, so Ultra-iron batteries have become a research hotspot in the development of green batteries. [0003] Since the discovery of ferrate, its stability and conductivity have always been problems that need to be solved urgently when it enters th...

Claims

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Application Information

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IPC IPC(8): H01M4/58H01M4/48H01M4/36H01M4/62H01M10/26
CPCY02E60/124Y02E60/10
Inventor 王宝辉吴红军温玉臣陈颖孔祥平
Owner DAQING GASOLINEEUM INST
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