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Battery with membrane-coated electrodes

A coating and electrode technology, applied in the direction of electrode carrier/collector, battery electrode, secondary battery, etc., can solve the problems of limited charge and discharge life, complicated manufacturing process, poor ion conductivity and mechanical strength, etc., and achieve capacity and The effect of improving the working platform, increasing ion conductivity, and increasing safety and stability

Active Publication Date: 2016-03-16
河北飞豹新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ion conductivity and mechanical strength of current lithium polymer batteries are relatively poor, the manufacturing process is complex, the battery volume is large, and the battery capacity is not enough. Since the positive active material and negative active material are easy to fall off, the ion conductivity and The electrochemical stability is poor, the strength and stability of the separator will change with the use of the battery, it is easy to cause the lithium polymer battery to age after long-term use, and the life of charge and discharge is greatly limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, a polymer battery includes a positive electrode sheet 1 and a negative electrode sheet 2 arranged inside the battery casing 6, a separator 5 is arranged between the positive electrode sheet 1 and the negative electrode sheet 2; A positive electrode coating 7 and a positive electrode catalytic network 3 are provided. The positive electrode coating 7 covers the surface of the positive electrode sheet 1, and the positive electrode catalytic network 3 covers the surface of the separator 5; The net 4 and the negative electrode coating 8, the negative electrode catalytic net 4 is covered on the surface of the separator 5, the negative electrode coating 8 is covered on the surface of the negative electrode sheet 2, the positive electrode coating 7 is connected with the positive electrode catalytic net 3, the negative electrode coating 8 is connected to the negative electrode The catalytic nets 4 are connected.

[0033] The positive electrode sheet 1...

Embodiment 2

[0039] Such as figure 2 As shown, the nano-Rh-graphene composite electrode was prepared by the following steps,

[0040] Step 1: Weigh a portion of graphite powder, add an appropriate amount of concentrated sulfuric acid as a solvent in an ice bath, stir, and control the reaction temperature below 20°C, according to the mass ratio of graphite powder: sodium nitrate: potassium permanganate 1 :0.5:3 Slowly add sodium nitrate and potassium permanganate to the solution, stir for 10 minutes; raise the temperature to 35°C, stir for 3 hours, add deionized water to the solution according to the volume ratio of concentrated sulfuric acid: deionized water 1:0.2 , heat up to 98°C, stir for 30 minutes, then add deionized water according to the volume ratio of concentrated sulfuric acid: deionized water 1:0.5, stop the reaction, add 5% hydrogen peroxide to the solution according to the molar ratio of graphite powder: hydrogen peroxide 1:0.2, Heat centrifugation, wash with appropriate amo...

Embodiment 3

[0044] Such as image 3 As shown, the nano-Co 2 SnO 4 The polysulfonate naphthalene electrode is prepared by the following steps,

[0045] Step 1: Weigh a portion of SnCl 4 , take an appropriate amount of deionized water as a solvent, stir to dissolve, and add CoCl to the solution according to the tin chloride:cobalt chloride molar ratio of 1:2 2 According to tin chloride: sodium hydroxide molar ratio 1:10, add NaOH aqueous solution to the solution, stir at room temperature for 10 minutes, put the solution in the reaction kettle, feed nitrogen: oxygen 15:1, feed the mixed gas of nitrogen and oxygen , sealed, reacted at 240 ° C for 30 h, cooled naturally to room temperature, washed with deionized water and absolute ethanol, and lyophilized under a vacuum of 0.98 to obtain Co 2 SnO 4 powder;

[0046] Step 2: Weigh a portion of Co 2 SnO 4 Powder, according to the molar ratio of cobalt stannate:hydrochloric acid 1:15, add 2mol / L hydrochloric acid solution as a solvent, sti...

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Abstract

The invention discloses a battery with membrane-coated electrodes, belonging to the field of batteries. The battery with the membrane-coated electrodes disclosed by the invention comprises a positive plate and a negative plate arranged in a battery shell; an isolation film is arranged between the positive plate and the negative plate; a positive membrane and a piece of positive catalytic gauze are arranged between the positive plate and the isolation film in sequence; the positive catalytic gauze coats the surface of the isolation film; a piece of negative catalytic gauze and a negative membrane are arranged between the isolation film and the negative plate in sequence; the negative catalytic gauze coats the surface of the isolation film; the positive plate is a nano Rh-graphene composite electrode; the negative plate is a nano Co2SnO4 naphthalene polysulfonic acid electrode; the positive membrane is a perfluorosulfonic acid proton film; the negative membrane is silicon dioxide; the thickness of the positive membrane is 300 nm; and the thickness of the negative membrane is 300 nm. The battery with the membrane-coated electrodes disclosed by the invention has the characteristics of being small in volume, light in weight, safe and steady in use process, large in battery capacity, difficult in electrode loss and excellent in discharging performance.

Description

technical field [0001] The invention relates to a battery, in particular to a battery with an electrode coating. Background technique [0002] Since Pride successfully trial-manufactured the synthetic lead-acid battery in 1859, the chemical power source has entered a budding state. In the course of more than 100 years of development, new series of chemical power sources have emerged continuously, and the performance of chemical power sources has been continuously improved. Especially after World War II, chemical power sources developed more rapidly. Later, Cd-Ni batteries were produced, and MH-Ni batteries were produced in the 1980s. After nearly 20 years of exploration, lithium-ion batteries and lithium polymer batteries were finally developed in the early 1990s, and their development has come to an end. At the stage of commercialization, at present, lithium-ion batteries are valued for their high specific energy density and long service life, and are developing rapidly. ...

Claims

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Application Information

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IPC IPC(8): H01M4/583H01M4/62H01M4/60H01M4/13H01M2/16H01M4/64H01M10/0525H01M50/46
CPCH01M4/13H01M4/583H01M4/602H01M4/625H01M4/667H01M10/0525H01M50/46Y02E60/10
Inventor 宋宏婷
Owner 河北飞豹新能源科技有限公司
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