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Thermal battery nickel dichloride positive electrode film material and preparation method thereof

A technology of nickel dichloride and thermal battery, which is applied to the electrodes of primary batteries, electrode manufacturing, battery electrodes, etc., which can solve the problems of poor preparation and molding of nickel chloride powder electrodes, and achieve light weight, reduced thickness, and small volume Effect

Inactive Publication Date: 2021-01-15
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is mainly aimed at solving the problem of poor preparation and molding of nickel chloride powder electrodes at present, meets the needs of miniaturization of thermal batteries and the development of thin electrodes, and provides a method for the preparation and application of nickel dichloride thin film positive electrode materials for high potential thermal batteries. A feasible technical solution, a method for preparing a nickel dichloride positive electrode film for a high-potential thermal battery is proposed. The prepared film positive electrode has good mechanical stability and excellent discharge performance

Method used

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  • Thermal battery nickel dichloride positive electrode film material and preparation method thereof
  • Thermal battery nickel dichloride positive electrode film material and preparation method thereof
  • Thermal battery nickel dichloride positive electrode film material and preparation method thereof

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Effect test

Embodiment 1

[0025] Weigh 14g nickel dichloride powder, 2g conductive agent activated carbon, 2gLiCl-LiBr-NaCl-KCl low temperature eutectic salt electrolyte, 1.9g binder MgO, 0.1g binder gas phase SiO 2 After mixing evenly, add 15ml of absolute ethanol, stir for 30 minutes, adjust the viscosity of the mixture to make it a paste and have a certain viscosity, and then use a 100-mesh screen printing machine to make the paste mixture evenly distributed and adsorbed to the surface of the porous conductive material. The substrate with the active material was placed in a vacuum drying oven and dried in vacuum at 180° C. for 4 hours to obtain a large-area thermal battery thin film positive electrode. Under the protection of a dry gas with a relative humidity of 1%, the positive electrode sheet was flat-pressed with an electrode tablet press at 20 MPa, and then punched with an electrode punching machine to obtain a number of thin film positive electrodes with a thickness of 0.4 mm and a diameter of ...

Embodiment 2

[0029] Weigh 14g nickel dichloride powder, 2g conductive agent activated carbon, 2gLiCl-LiBr-NaCl-KCl low temperature eutectic salt electrolyte, 1.8g binder MgO, 0.2g binder gas phase SiO 2 After mixing evenly, add 15ml of absolute ethanol, stir for 30 minutes, adjust the viscosity of the mixture to make it a paste and have a certain viscosity, and then use a 100-mesh screen printing machine to make the paste mixture evenly distributed and adsorbed to the surface of the porous conductive material. The substrate with the active material was placed in a vacuum drying oven and dried in vacuum at 180° C. for 4 hours to obtain a large-area thermal battery thin film positive electrode. Under the protection of a dry gas with a relative humidity of 1%, the positive electrode sheet was flat-pressed with an electrode tablet press at 20 MPa, and then punched with an electrode punching machine to obtain a number of thin film positive electrodes with a thickness of 0.4 mm and a diameter of ...

Embodiment 3

[0033] Weigh 14g of nickel dichloride powder, 2g of conductive agent activated carbon, 2g of LiCl-LiBr-NaCl-KCl low-temperature eutectic salt electrolyte, 2g of binder MgO, mix well, add 15ml of absolute ethanol, stir for 30min, and adjust the viscosity of the mixture. Make it into a paste and have a certain viscosity, then use a 100-mesh screen printing machine to make the paste mixture evenly distributed and adsorbed on the surface of the porous conductive material, put the substrate covered with the active material into a vacuum drying oven and dry it under vacuum at 180°C After 4h, a large-area thermal battery thin film positive electrode was obtained. Under the protection of a dry gas with a relative humidity of 1%, the positive electrode sheet was flat-pressed with an electrode tablet press at 20 MPa, and then punched with an electrode punching machine to obtain a number of thin film positive electrodes with a thickness of 0.4 mm and a diameter of 19 mm.

[0034] Under t...

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Abstract

The invention provides a thermal battery nickel dichloride positive electrode film material and a preparation method thereof, which belong to the technical field of thermal battery film electrodes. The preparation method comprises the following steps: uniformly mixing nickel dichloride, an electrolyte, a conductive agent and a binder according to a certain mass ratio, adding a certain amount of absolute ethyl alcohol, and adjusting the viscosity of the mixture to obtain paste with certain viscosity; and uniformly adsorbing the paste mixture to the surface of a matrix by silk-screen printing, and putting the matrix covered with the active substance into a vacuum drying oven for vacuum drying to obtain the thermal battery film positive electrode. The thermal battery film positive electrode provided by the invention overcomes a plurality of defects caused by an existing powder tabletting preparation process of a thermal battery electrode, easily realizes preparation of a large-area or irregular-shaped electrode slice, simplifies the electrode preparation process, improves productivity, reduces cost, improves stability and discharge performance of a battery, has relatively high industrial application value, and has good application prospects.

Description

technical field [0001] The invention belongs to the technical field of thin-film electrodes of thermal batteries, and in particular relates to a nickel dichloride cathode thin film of a high-potential thermal battery and a preparation method thereof. Background technique [0002] The thermal battery is a storage type primary battery with molten salt electrolyte. The electrolyte of the thermal battery is a non-conductive anhydrous solid inorganic salt when stored at room temperature. The hot molten salt is transformed into an ionic conductor with high conductivity. The battery will Activated for a short time and begins to discharge. Generally, the operating temperature of lithium batteries is only -20°C to 60°C. However, as a high-temperature energy source, thermal batteries can work at temperatures of 350°C to 550°C. [0003] Thermal batteries have excellent thermal stability and electrochemical performance. In addition, they have the advantages of rapid activation, long st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/08H01M4/04H01M4/06H01M4/58H01M6/36
CPCH01M4/0404H01M4/06H01M4/08H01M4/582H01M6/36
Inventor 杨少华任玥盈许浩
Owner SHENYANG LIGONG UNIV
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