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A reactive polymer electrolyte and its aqueous lithium-ion battery membrane electrode assembly

A technology of reactive polymers and membrane electrode assemblies, applied in the direction of active material electrodes, battery electrodes, electrical components, etc., can solve environmental pollution and other problems, and achieve the effects of improving battery performance, increasing discharge capacity, and high ion conductivity

Active Publication Date: 2016-06-08
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electrolytes of these energy storage devices often contain strong acids, strong alkalis, flammable and explosive solvents, or toxic and harmful metal ions. Therefore, from another perspective, the use of this type of new clean energy means that corresponding supporting energy storage equipment is required. It will become a transfer of the problem of environmental pollution

Method used

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  • A reactive polymer electrolyte and its aqueous lithium-ion battery membrane electrode assembly
  • A reactive polymer electrolyte and its aqueous lithium-ion battery membrane electrode assembly
  • A reactive polymer electrolyte and its aqueous lithium-ion battery membrane electrode assembly

Examples

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Effect test

Embodiment 1

[0026] The positive electrode uses commercial-grade spinel-type lithium manganese oxide. The mass ratio of the slurry is mixed according to lithium manganate: acetylene black: polytetrafluoroethylene = 82:10:8, and the film is pressed on a stainless steel mesh. The pressed film is placed on the Dry in a vacuum oven at a constant temperature of 80°C for more than 24h. Negative electrode material active material lithium titanium phosphate (LiTi(PO 4 ) 3 ) preparation: to a certain amount of nano-TiO 2 Add a certain amount of polyvinyl alcohol solution dropwise to the powder, and then add Li 2 CO 3 and NH 4 h 2 PO 4 ), the mixture was stirred dry at 90 °C with magnetic stirring to form a white solid. The white solid was placed in a porcelain boat and transferred to a tube furnace under N 2 Calcined at 900°C for 12h under atmosphere protection. The preparation method of the negative electrode is the same as that of the positive electrode. Mix 0.85g tungstosilicic acid, 0...

Embodiment 2

[0028] The positive electrode uses commercial-grade spinel-type lithium manganese oxide. The mass ratio of the slurry is mixed according to lithium manganate: acetylene black: polytetrafluoroethylene = 82:10:8. The film is pressed on a stainless steel mesh, and the pressed film is placed on the Dry in a vacuum oven at a constant temperature of 80°C for more than 24h. Negative electrode material active material lithium titanium phosphate (LiTi(PO 4 ) 3 ) preparation: to a certain amount of nano-TiO 2 Add a certain amount of polyvinyl alcohol solution dropwise to the powder, and then add Li 2 CO 3 and NH 4 h 2 PO 4 ), the mixture was stirred dry at 90 °C with magnetic stirring to form a white solid. The white solid was placed in a porcelain boat and transferred to a tube furnace under N 2 Calcined at 900°C for 12h under atmosphere protection. The preparation method of the negative electrode is the same as that of the positive electrode. Take 0.80g tungstosilicic acid, ...

Embodiment 3

[0030] The positive electrode uses commercial-grade spinel-type lithium manganese oxide. The mass ratio of the slurry is mixed according to lithium manganate: acetylene black: polytetrafluoroethylene = 82:10:8. The film is pressed on a stainless steel mesh, and the pressed film is placed on the Dry in a vacuum oven at a constant temperature of 80°C for more than 24h. Negative electrode material active material lithium titanium phosphate (LiTi(PO 4 ) 3 ) preparation: to a certain amount of nano-TiO 2 Add a certain amount of polyvinyl alcohol solution dropwise to the powder, and then add Li 2 CO 3 and NH 4 h 2 PO 4 ), the mixture was stirred dry at 90 °C with magnetic stirring to form a white solid. The white solid was placed in a porcelain boat and transferred to a tube furnace under N 2 Calcined at 900°C for 12h under atmosphere protection. The preparation method of the negative electrode is the same as that of the positive electrode. Take 0.70g of tungstosilicic aci...

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Abstract

The invention discloses an electrode with a reactive polymer electrolyte membrane, which can significantly improve the specific energy of a water-based lithium-ion battery after electrochemical treatment, but is not limited to the application of the water-based lithium-ion battery. For example, the types and content ranges of typical reactive polymer electrolyte components are as follows: heteropoly acid salt 5%-90%, lithium salt 5%-30%, water-based polymer 5%-90%, water 10%-300% . The uniformly prepared polymer electrolyte is adjusted to neutrality with concentrated lithium hydroxide, then evenly coated on the surface of the aqueous lithium electrode, placed in a certain temperature and humidity environment to form a membrane electrode, and the positive and negative electrodes are docked to form a battery. Finally, it is processed by overcharge voltage. Compared with lead-acid batteries, nickel-metal hydride batteries and organic lithium-ion battery secondary batteries, the preparation process is simple to operate, the selected raw materials are basically green and pollution-free, and comparable battery specific energy characteristics can be obtained.

Description

technical field [0001] The invention relates to a lithium ion battery, more specifically, to a reactive polymer electrolyte and a membrane electrode assembly of a water-based lithium ion battery. Background technique [0002] Energy storage and output play a pivotal role in the development and utilization of new energy and energy-saving technologies. With the approaching of energy depletion and the deteriorating environmental pollution, the research on the application of clean energy such as wind energy, geothermal energy, solar energy and biomass has been paid more and more attention. However, these so-called new energy sources often have problems such as seasonality, power output instability, and obvious regional differences, which make them still far away from real practical promotion. A good solution is to dump these energies first and then output them, so that the problem of energy development and utilization can be fundamentally solved. Energy dumping methods are gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/38H01M4/02
CPCH01M4/131H01M4/136H01M4/582H01M4/5825H01M4/62H01M10/0525Y02E60/10Y02P70/50
Inventor 阮文红黄逸夫章明秋容敏智
Owner SUN YAT SEN UNIV