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Preparation method and application of electrolyte-treated laboratory metal potassium sheet

A laboratory-use, metal potassium technology, applied in the direction of circuits, electrical components, battery electrodes, etc., can solve the size, thickness is difficult to unify, limit the scientific research and market application of potassium ion batteries, metal potassium soft sticky, etc. problems, to achieve the effects of reducing the difficulty of preparation, efficient and convenient preparation methods, and shortening the time spent on preparation

Active Publication Date: 2021-11-02
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the current potassium-ion battery is still in a basic research stage, and its development is still restricted by multiple factors.
Among them, due to the extremely active chemical properties of potassium, and the soft and sticky nature of potassium metal, it is difficult to process, so the existing preparation technology of metal potassium flakes is difficult to meet the needs of the industrialization of potassium ion batteries in the future.
At present, most of the test personnel are ready-to-use, and it is difficult to make films, and the quality is not high, which is time-consuming and laborious.
The specifications, sizes, and thicknesses of the prepared potassium metal sheets are also difficult to unify, which greatly limits the scientific research and market application of potassium ion batteries

Method used

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  • Preparation method and application of electrolyte-treated laboratory metal potassium sheet

Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] The electrolyte of this embodiment uses 1M KPF 6 in DME=100%.

[0035] A kind of preparation method of the laboratory metal potassium sheet of electrolyte treatment, comprises the following steps:

[0036] Step 1, in a glove box filled with an inert atmosphere (argon) (H 2 O, O 2 <<1ppm), take out the metal potassium block, and wipe off the residual kerosene on the surface of the metal potassium block with a dust-free paper;

[0037] Step 2, on the acrylic plate, use a stainless steel knife to remove the oxide layer on the surface of the wiped potassium metal block;

[0038] Step 3, use a 200μL pipette to pipette a certain amount of 1M KPF 6 in DME=100% dropwise on the surface of the pretreated potassium metal block;

[0039] Step 4, under the coating of polyethylene film, the metal potassium block is manually rolled to a metal sheet with a certain thickness by means of a metal aluminum rod;

[0040] Step 5, cutting the rolled metal sheet into metal discs with a...

Embodiment 2

[0045] The electrolyte in this embodiment uses 1M KFSI in DME=100%.

[0046] A kind of preparation method of the laboratory metal potassium sheet of electrolyte treatment, comprises the following steps:

[0047] Step 1, in a glove box filled with an inert atmosphere (argon) (H 2 O, O2 <<1ppm), take out the metal potassium block, and wipe off the residual kerosene on the surface of the metal potassium block with a dust-free paper;

[0048] Step 2, on the acrylic plate, use a stainless steel knife to remove the oxide layer on the surface of the wiped potassium metal block;

[0049] Step 3, use a 200 μL pipette to pipette a certain amount of 1M KFSI in DME=100% dropwise on the surface of the pretreated potassium metal block;

[0050] Step 4, under the coating of polyethylene film, the metal potassium block is manually rolled to a metal sheet with a certain thickness by means of a metal aluminum rod;

[0051] Step 5, cutting the rolled metal sheet into metal discs with a diamet...

Embodiment 3

[0056] The electrolyte in this example uses 1M KFSI in EC: DEC=1:1 (V / V).

[0057] A kind of preparation method of the laboratory metal potassium sheet of electrolyte treatment, comprises the following steps:

[0058] Step 1, in a glove box filled with an inert atmosphere (argon) (H 2 O, O 2 <<1ppm), take out the metal potassium block, and wipe off the residual kerosene on the surface of the metal potassium block with a dust-free paper;

[0059] Step 2, on the acrylic plate, use a stainless steel knife to remove the oxide layer on the surface of the wiped potassium metal block;

[0060] Step 3, use a 200 μL pipette to pipette a certain amount of 1M KFSI in EC: DEC=1:1 (V / V) and drop it on the surface of the pretreated potassium metal block;

[0061] Step 4, under the coating of polyethylene film, the metal potassium block is manually rolled to a metal sheet with a certain thickness by means of a metal aluminum rod;

[0062] Step 5, cutting the rolled metal sheet into metal...

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Abstract

The invention discloses a preparation method and application of an electrolyte-treated laboratory metal potassium sheet, and belongs to the technical field of potassium ion batteries. After a metal potassium block is pretreated, a certain amount of electrolyte is taken to wet the surface of the metal potassium block, the metal potassium block is manually rolled to a certain thickness under the coating of a polyethylene film, then the rolled metal potassium block is cut into a specific shape and size by using a punching device, finally the electrolyte for is dropwise added for the second time, and packaging and storing are carried out. When the battery is assembled, only the film coating the surface of the battery needs to be removed. The metal potassium sheet can be simply and quickly prepared, the prepared potassium sheet can be stored for a long time, the problem that the existing metal potassium sheet needs to be used after being prepared on site and cannot be stored for a long time can be solved, the time consumed by preparation of a potassium ion battery can be greatly shortened, the preparation difficulty is reduced, and scientific research and marketization application of potassium electricity can be effectively promoted.

Description

technical field [0001] The invention relates to the technical field of potassium ion batteries, in particular to a preparation method and application of electrolyte-treated potassium metal sheets for laboratories. Background technique [0002] Since Japan's Sony Corporation successfully developed lithium-ion batteries in 1990, after decades of rapid development, lithium-ion batteries have already entered a period of steady development. In recent years, with the gradual rise of portable electronic products, energy storage devices and electric / hybrid vehicles, energy storage and conversion devices with higher energy density, long cycle life and environmental compatibility have begun to be mentioned. However, lithium-ion batteries are restricted by factors such as insufficient reserves of lithium resources and uneven global distribution, and cannot meet the increasing energy needs of people in the future. [0003] Potassium-ion batteries are considered to be the most potential...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/1395H01M10/054
CPCH01M4/1395H01M10/054Y02E60/10
Inventor 侯莉熊双胜姜洋邓硕垒张正光高发明
Owner YANSHAN UNIV
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