Indium-nickel alloy/carbon nanotube modified lithium carbon fluoride battery positive electrode plate, preparation method thereof and lithium carbon fluoride battery

A lithium carbon fluoride battery and carbon nanotube modification technology, which is applied to the electrodes of primary batteries, battery electrodes, non-aqueous electrolyte batteries, etc., can solve the problem of low battery reaction kinetics, affecting battery capacity performance, and poor rate performance. problem, to achieve the effects of reducing polarization, high voltage platform and platform stability, and improving rate performance

Pending Publication Date: 2022-01-25
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the rate performance of Li / CFx batteries is poor, and the introduction of excess fluorine atoms into CFx makes the reaction kinetics of the battery lower, which affects the capacity performance of the battery under high-current working conditions, and limits its development in the field of high-energy battery technology.

Method used

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  • Indium-nickel alloy/carbon nanotube modified lithium carbon fluoride battery positive electrode plate, preparation method thereof and lithium carbon fluoride battery
  • Indium-nickel alloy/carbon nanotube modified lithium carbon fluoride battery positive electrode plate, preparation method thereof and lithium carbon fluoride battery

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preparation example Construction

[0032] This embodiment provides a method for preparing an indium-nickel alloy / carbon nanotube modified lithium carbon fluoride battery positive plate, including the following steps:

[0033] Step 1, preparing the indium-nickel alloy / carbon nanotube composite material, the specific method is:

[0034] In step 1.1, the molar ratio of indium, nickel and carbon atoms is 1:(5-20):(20-50) and the indium source, the nickel source and the carbon source are uniformly mixed to obtain a mixture A;

[0035] Step 1.2, put the mixture A in a high-temperature tube furnace, raise the temperature from room temperature to 150-200°C at a rate of 15-30°C / min under an inert atmosphere, and keep it warm for 1-2h;

[0036] Step 1.3, after the heat preservation is completed, close the high-temperature tube furnace, and take out the mixture A after it drops to room temperature, and obtain the product A;

[0037] Step 1.4, put the product A into a mortar and grind it thoroughly, put it into a high-tem...

Embodiment 1

[0047] A method for preparing an indium-nickel alloy / carbon nanotube modified lithium carbon fluoride battery positive plate, comprising the following steps:

[0048] Step 1, preparing the indium-nickel alloy / carbon nanotube composite material, the specific method is:

[0049] Step 1.1, mix indium nitrate, nickel nitrate hexahydrate and melamine according to the molar ratio of indium, nickel and carbon atoms at 1:9:40, then add them to a high-speed centrifugal dispersion tank and disperse for 10 minutes at a speed of 1500r / min, take out to obtain mixture A;

[0050] Step 1.2, put the mixture A in a high-temperature tube furnace, and rapidly raise the temperature to 200°C at a rate of 30°C / min under an inert atmosphere, and keep it for 1 hour;

[0051] Step 1.3, after the heat preservation is completed, close the high-temperature tube furnace, and take out the mixture A after it drops to room temperature, and obtain the product A;

[0052] Step 1.4, put the product A in a mor...

Embodiment 2

[0058] A method for preparing an indium-nickel alloy / carbon nanotube modified lithium carbon fluoride battery positive plate, comprising the following steps:

[0059] Step 1, preparing the indium-nickel alloy / carbon nanotube composite material, the specific method is:

[0060] Step 1.1, mix indium sulfate, nickel sulfate and urea according to the molar ratio of indium, nickel and carbon atoms at 1:5:20, then add them to a high-speed centrifugal dispersion tank and disperse for 5 minutes at a speed of 2000r / min, and take out to obtain mixture A ;

[0061] Step 1.2, put the mixture A in a high-temperature tube furnace, and rapidly raise the temperature to 150°C at a rate of 15°C / min under a nitrogen atmosphere, and keep it for 2 hours;

[0062] Step 1.3, after the heat preservation is completed, close the high-temperature tube furnace, and take out the mixture A after it drops to room temperature, and obtain the product A;

[0063] Step 1.4, put the product A in a mortar and g...

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Abstract

The invention discloses an indium-nickel alloy/carbon nanotube modified lithium carbon fluoride battery positive electrode plate, and a preparation method thereof. The preparation method comprises the following steps of: step 1, preparing an indium-nickel alloy/carbon nanotube composite material; step 2, weighing 70-90% by mass of carbon fluoride, 5-20% by mass of the indium-nickel alloy/carbon nanotube composite material and 5-10% by mass of a binder, grinding and uniformly mixing the materials, then adding a solvent, and performing uniform stirring to obtain positive electrode slurry with fluidity; and step 3, uniformly coating an aluminum foil or a carbon-coated aluminum foil with the positive electrode slurry by using a film coating device, and carrying out vacuum drying to remove the solvent to obtain the indium-nickel alloy/carbon nanotube modified lithium carbon fluoride battery positive electrode plate. The invention also provides a lithium carbon fluoride battery which comprises an electrolyte, a diaphragm, a negative plate and the indium-nickel alloy/carbon nanotube modified lithium carbon fluoride battery positive electrode plate. According to the prepared positive plate, the conductivity of the positive electrode can be improved, the plateau voltage in the discharging process of the battery is improved, and the specific energy and storage performance of the battery are improved.

Description

technical field [0001] The invention relates to a lithium fluoride battery, in particular to an indium-nickel alloy / carbon nanotube modified lithium fluoride battery positive plate, a preparation method thereof, and a lithium fluoride battery. Background technique [0002] With the development of social economy, people have higher and higher requirements on the performance of batteries, especially the performance of lithium batteries. Due to its excellent performance, lithium primary batteries are widely used in various civil and military fields such as sensors, cameras, cardiac generators, and aircraft. Carbon fluoride is one of the cathode materials with the highest capacity for primary lithium batteries. As a result, Li / CFx primary cells are significantly superior to other competing primary Li-ion cells, with their ultra-long shelf life, wide operating temperature range, and flat discharge voltage. However, the rate performance of Li / CFx batteries is poor, and the intro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/06H01M4/08H01M4/62H01M6/14
CPCH01M4/08H01M4/06H01M6/14H01M4/624
Inventor 李嘉胤钱程郑裕欣黄剑锋曹丽云胡云飞张金津王怡婷
Owner SHAANXI UNIV OF SCI & TECH
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