Ag / C catalytic agent used for zinc air battery and preparation method thereof

A zinc-air battery and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as less research, achieve simple preparation process, Good consistency and good catalyst stability

Inactive Publication Date: 2013-06-12
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, pure Ag / C catalysts are less studied in zinc-air batteries

Method used

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  • Ag / C catalytic agent used for zinc air battery and preparation method thereof
  • Ag / C catalytic agent used for zinc air battery and preparation method thereof
  • Ag / C catalytic agent used for zinc air battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh and weigh 72g of XC-72R activated carbon and ball mill it for 1h, then ultrasonically wash with ethanol for 1.5h, and then ultrasonically wash with distilled water for 1.5h. Weigh 1gPVP and 12.5gAgNO 3 Dissolve in 400ml deionized water and make AgNO 3 solution, and it was mechanically stirred for 1 h. Configure 0.02mol / LNaBH 4 solution, stir it thoroughly. 1.3L0.02mol / L NaBH 4 The solution was slowly added to the AgNO 3 The two are fully reacted in the solution. Weigh 72g of XC-72R activated carbon and put it into AgNO 3 Stir together in the solution. Suction filter the product in the aforementioned reaction, and dry it at 80° C. to prepare the Ag / C catalyst.

Embodiment 2

[0033] Weigh 30g of BP-2000 and ball mill it for 1h, then ultrasonically wash with ethanol for 1.5h, and then ultrasonically wash with distilled water for 1.5h. Weigh 1gPVP and 12.5g AgNO 3 Dissolve in 400ml deionized water and make AgNO 3 solution, and it was mechanically stirred for 4h. Configure 0.02mol / LNaBH 4 solution, stir it thoroughly. 1.3LNaBH 4 The solution was slowly added to the AgNO 3 The two are fully reacted in the solution. Weigh 30g BP-2000 and put it into AgNO 3 Stir together in the solution. Suction filter the product in the aforementioned reaction, and dry it at 80° C. to prepare the Ag / C catalyst.

Embodiment 3

[0035] The activated carbon produced by Japan AIR-WATER Co., Ltd. was milled with a ball mill for 1 h, weighed 1.439 g, and then ultrasonically washed with ethanol for 1.5 h, and then ultrasonically cleaned with distilled water for 1.5 h. Weigh 3.4gAgNO 3 and 34gPVP, dissolve it with 2L deionized water, stir for 30min, weigh 0.757gNaBH 4 Diluted with 2L deionized water, NaBH 4 Add AgNO slowly 3 in solution. The activated carbon carrier was added into the reaction system, kept stirring for 12 hours, and vacuum-dried at 40° C. to prepare the Ag / C catalyst through suction filtration and washing.

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Abstract

The invention relates to an Ag / C catalytic agent used for a zinc air battery and a preparation method thereof. The Ag / C catalytic agent used for the zinc air battery is made of silver salt and uses polyvinyl pyrrolidone (PVP) as a protective agent. The Ag / C catalytic agent used for the zinc air battery is prepared by deoxidation of the silver salt using NaBH4 as a reducing agent. The mass ratio of the protection agent to the silver salt is 0.1:1-15:1 in a process of preparing the catalytic agent. The mass ratio of the Ag to C in the catalytic agent is 98:2-40:60. When the method is adopted to prepare the Ag / C catalytic agent, process is simple, mass production is available, materials which can pollute the environment are not used in the preparing process, and the environment is protected. The Ag / C catalytic agent prepared with the method is used in the zinc air battery, and performance is excellent.

Description

technical field [0001] The invention relates to the field of catalysts for metal-air batteries, in particular to an Ag / C catalyst for zinc-air batteries. Background technique [0002] In today's era, the energy crisis and the depletion of renewable resources on the earth, the search for green, environmentally friendly and sustainable energy has become the theme of the development of human society. [0003] Metal-air battery is a kind of green and clean energy. Zinc-air batteries are a type of metal-air batteries. Zinc-air batteries have many advantages such as large specific capacity, high energy density, good power transmission quality, stable discharge curve, long dry storage time, low price, safe use, no risk of explosion, and environmental friendliness. Zinc-air batteries use an air electrode as the cathode, a zinc electrode as the anode, and mostly an alkaline KOH solution as the electrolyte solution. As the cathode of the zinc-air battery, the oxygen electrode has l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90B01J23/50
CPCY02E60/50
Inventor 孙公权齐鹭汀王二东姜鲁华
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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