Preparation method of inorganic solid electrolyte membrane

An inorganic solid, electrolyte membrane technology, applied in circuits, electrical components, secondary batteries, etc., can solve problems such as dendrite growth, short circuit, battery explosion, etc., to achieve a large number of charge and discharge times, large battery capacity, and stable charge and discharge performance. Effect

Active Publication Date: 2013-12-18
湖南汨罗循环经济产业园区科技创新服务中心
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

This patent makes an inorganic electrolyte film by heating the base element, and the base element is metal lithium or lithium alloy, and then deposits the inorganic compound on the surface of the base by vapor deposition method, although, the inorganic solid with certain conductivity can be obtained by this method Electrolyte membrane, however, under the condition that a large capacity and high efficiency inorganic electrolyte membrane is required, due to the lithium anode in the charging and discharging process, there is a danger of dendrite growth on the metal lithium on the anode, and the dendrite growth will form the same A short circuit occurs on the positive pole, causing the battery to explode

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Embodiment 1

[0022] The polysiloxane resin micropowder powder with a particle size of 6um in the formula, the nano-scale lithium phosphate powder with a particle size of 8nm and diatomaceous earth are thoroughly mixed with a high-speed mixer, and then hot-pressed into a 100μm thick sheet and placed side by side. Put it into a high-temperature furnace equipped with an air extraction port at a temperature of 1200°C, and treat it for 150 minutes under the condition of a negative pressure of 0.096Mpa. The metal pipe connected to the end of the air extraction port is directly connected to a cooling device equipped with water. The top outlet is connected to the air inlet of the vacuum pump, and the air outlet is directly emptied; then the treated polysiloxane resin and lithium phosphate flakes are transported to the normal temperature air chamber without water vapor through the conveyor belt and cooled to normal temperature; The treated matrix sheet has a porosity of 78% and a pore diameter of 5u...

Embodiment 2

[0025] The polysiloxane resin powder with a particle size of 12um in the formula, the nano-sized lithium phosphate powder and diatomaceous earth with a particle size of 12nm in the formula are thoroughly mixed with a high-speed mixer, and then hot-pressed into a 600μm thick sheet, and placed Put it into a high-temperature furnace equipped with an air extraction port at a temperature of 1380 ° C, and treat it for 188 minutes under the condition of a negative pressure of 0.098Mpa. The metal pipe connected to the end of the air extraction port is directly connected to a cooling device equipped with water. The top outlet is connected to the air inlet of the vacuum pump, and the air outlet is directly emptied; then the treated polysiloxane resin and lithium phosphate flakes are transported to the normal temperature air chamber without water vapor through the conveyor belt and cooled to normal temperature; The treated matrix sheet has a porosity of 60% and a pore diameter of 3um; the...

Embodiment 3

[0028] The polysiloxane resin powder with a particle size of 7um in the formula, the nano-sized lithium phosphate powder and diatomaceous earth with a particle size of 9nm in the formula are thoroughly mixed with a high-speed mixer, and then hot-pressed into a 200μm thick sheet, and placed side by side Put it into a high-temperature furnace equipped with an air extraction port at a temperature of 1310°C, and treat it for 163 minutes under the condition of a negative pressure of 0.097Mpa. The metal pipe connected to the end of the air extraction port is directly connected to a cooling device equipped with water. The top outlet is connected to the air inlet of the vacuum pump, and the air outlet is directly emptied; then the treated polysiloxane resin and lithium phosphate flakes are transported to the normal temperature air chamber without water vapor through the conveyor belt and cooled to normal temperature; The treated matrix sheet has a porosity of 68% and a pore diameter of...

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Abstract

The invention discloses a preparation method of an inorganic solid electrolyte membrane, which is used for preparing an inorganic solid electrolyte matrix in an electrode of a lithium battery. A material formulation of the matrix is as follows: a mass ratio of organopolysiloxane resin to lithium phosphate to kieselguhr is (25-30):(3-5):(72-65); the organic solid electrolyte membrane is prepared by inorganic electrolyte slice-slice superposing and polyphenylene sulfide membrane packaging. An inorganic lithium compound obtained by the method disclosed by the invention is uniform in distribution in a matrix membrane, so that charging and discharging performances of a full-solid lithium battery prepared by using the electrolyte are stable, and therefore, the charging and discharging times and the service life as well as the electric capacity are respectively improved by 80%-90% in comparison with the existing lithium battery, and the content of inorganic lithium in the solid electrolyte membrane is 18%-32%. A solid lithium battery prepared by using the electrolyte membrane has the characteristics of long service life, a plurality of charging and discharging times, and large battery capacity.

Description

technical field [0001] The present invention relates to a manufacturing method of an inorganic solid electrolyte membrane, more specifically, the present invention relates to a manufacturing method of an inorganic solid electrolyte membrane in an electrode of a lithium battery. Background technique [0002] Batteries have long been used as power sources for electrical appliances such as flashlights and telephones. With the advancement of technology and the discovery of new materials, people have developed nickel-metal hydride batteries and lithium batteries. With the advent of portable electrical appliances such as mobile phones and notebook computers, The demand for high performance and small and lightweight batteries is becoming more and more intense. In order to meet this demand, lithium-ion batteries have gradually attracted people's attention due to their high energy density and rapid charging. Compared with nickel-cadmium batteries Compared with other batteries, based ...

Claims

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Application Information

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IPC IPC(8): H01M10/0562
CPCY02E60/10
Inventor 宋大余宋小春杜生民张亚丽
Owner 湖南汨罗循环经济产业园区科技创新服务中心
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