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NiCl2-GICs composite anode material for thermal battery and its preparation method

A composite positive electrode material and thermal battery technology, applied to battery electrodes, circuits, electrical components, etc., can solve the problems of insufficient utilization, poor safety, high resistivity, etc., and achieve the effect of high atomic utilization

Active Publication Date: 2018-01-30
SHANGHAI INST OF SPACE POWER SOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the invention is to solve the existing NiCl 2 Due to the disadvantages of poor activity, high resistivity, insufficient utilization and poor safety, the material is difficult to be used as anode material for thermal batteries. Starting from the special properties of GICs materials, focusing on the synergistic mechanism of composite materials, the creative first A NiCl 2 -GICs composite cathode material and preparation method thereof

Method used

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  • NiCl2-GICs composite anode material for thermal battery and its preparation method

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Effect test

Embodiment 1

[0031] According to the target product NiCl 2 - The ratio of each component in the GICs composite cathode material is used to calculate the amount of each raw material. Weigh 153NiCl in the present embodiment 2 (the proportion of the substance is 10%), 84g pyrolytic graphite (the proportion of the substance is 70%), 120g LiF-LiCl-LiBr eutectic salt (the proportion of the substance is 20%). In an environment with a dew point lower than -40°C, the three raw materials were placed in a blast drying oven for 2 hours at a drying temperature of 120°C. 153g NiCl2 , put 84g of pyrolytic graphite and 60g of LiF-LiCl-LiBr eutectic salt into an agate mortar, grind them evenly, put them into a sealed stainless steel tank, bake them at 500°C for 12h, and cool them down to room temperature naturally. The precursor was obtained after ball milling. Mix the precursor and 60g LiF-LiCl-LiBr eutectic salt evenly and place it in an atmosphere protection furnace, rapidly raise the temperature to ...

Embodiment 2

[0033] According to the target product NiCl 2 - The ratio of each component in the GICs composite cathode material is used to calculate the amount of each raw material. Weigh 153NiCl in the present embodiment 2 (the amount of the substance is 10%), 84g natural flake graphite (the amount of the substance is 70%), 192g LiCl-LiBr-KBr eutectic salt (the amount of the substance is 20%). In an environment with a dew point lower than -40°C, the three raw materials were placed in a blast drying oven for 2 hours at a drying temperature of 120°C. 153g NiCl 2 , 84g of natural flake graphite and 96g of LiF-LiCl-LiBr eutectic salt were placed in an agate mortar, ground evenly and put into a sealed stainless steel tank, roasted at 400°C for 24h, cooled naturally to room temperature, and ball-milled the block product The precursor is obtained after pulverization. The precursor and 96g LiF-LiCl-LiBr eutectic salt were mixed evenly and then placed in the atmosphere protection furnace. Unde...

Embodiment 3

[0035] According to the target product NiCl 2 - The ratio of each component in the GICs composite cathode material is used to calculate the amount of each raw material. Weigh 230NiCl in the present embodiment 2 (The amount of substance is 15%), 66g graphitized carbon fiber (the amount of substance is 55%), 168g LiCl-KCl eutectic salt (the amount of substance is 30%). In an environment with a dew point lower than -40°C, the three raw materials were placed in a blast drying oven for 2 hours at a drying temperature of 120°C. 230g NiCl 2 , 66g of graphitized carbon fiber and 84g of LiCl-KCl eutectic salt were placed in an agate mortar, ground evenly, put into a sealed stainless steel tank, roasted at 400°C for 12h, cooled naturally to room temperature, and ball milled the blocky product Then get the precursor. The precursor and 84g LiF-LiCl-LiBr eutectic salt were mixed evenly and then placed in the atmosphere protection furnace. Under the protection of argon, the temperature ...

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Abstract

The invention discloses a NiCl2-GICs composite anode material for a thermal battery and its preparation method. The anode material comprises NiCl2, graphite and alkali halide co-fused salt. The mass percent of the NiCl2 is 10-15%, the mass percent of the graphite is 55-70%m, and the mass percent of the alkali halide co-fused salt is 20-30%. The NiCl2-GICs composite anode material prepared by the invention has the advantages of being high in ion migration rate, good in thermal stability, strong in electrochemical activity, and others. The preparation method applies the dissolving property of NiCl2 in a fusing salt under high temperature, and reduces temperature for inserting action by the fusing salt method; besides, a fusing salt electrolyte shell encircled by fusing salt is applied, so that the NiCl2-GICs composite anode material is prepared. The method is high in atom utilization rate, free from waste discharge, and potential to apply to projects in a thermal battery product.

Description

technical field [0001] The invention belongs to the field of material chemistry and relates to a battery material, in particular to a NiCl for thermal battery 2 -GICs composite cathode material and its preparation method. Background technique [0002] The thermal battery uses the heating material of the battery itself to heat and melt the non-conductive solid-state salt electrolyte (according to the different working hours of the thermal battery, mainly using LiF-LiCl-LiBr, LiCl-LiBr-KBr or LiCl-KCl system) to form ions. Type conductor and enter the working state of the primary reserve battery. Its main features are large output power (above kW level), short activation time (≤1 second), maintenance-free, and long storage time (15-20 years). [0003] With the rapid development of the national defense science and technology industry, users have put forward higher and higher requirements for the various performances of the missile weapon system, especially the maneuverability...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/58H01M4/583H01M6/36
Inventor 王士瑞郑侠罗重宵韩婷婷胡华荣叶丹宏胡冉周萍王超
Owner SHANGHAI INST OF SPACE POWER SOURCES
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