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Crystal material, preparation method and application thereof, battery positive electrode active material, battery positive electrode material, battery and electric equipment

A technology of crystalline materials and battery positive electrodes, which is applied in the direction of battery electrodes, secondary batteries, carboxylate preparations, etc., can solve the problems of unsatisfactory electrochemical performance of potassium ion batteries and limited types of positive electrode active materials, so as to reduce the preparation cost, Raw materials are cheap and the effect of increasing battery capacity

Pending Publication Date: 2020-06-30
SHENZHEN INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to provide a crystalline material to improve the technical problems that the existing potassium-ion battery positive electrode active materials are limited and the electrochemical performance of the potassium-ion battery made by it is not ideal.

Method used

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  • Crystal material, preparation method and application thereof, battery positive electrode active material, battery positive electrode material, battery and electric equipment
  • Crystal material, preparation method and application thereof, battery positive electrode active material, battery positive electrode material, battery and electric equipment
  • Crystal material, preparation method and application thereof, battery positive electrode active material, battery positive electrode material, battery and electric equipment

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preparation example Construction

[0051] According to a second aspect of the present invention, the present invention provides a method for preparing a crystalline material, comprising the steps of:

[0052] Solvothermal reaction of potassium source, lithium source, transition metal source and oxalic acid source to obtain KLi 3 Tm(C 2 o 4 ) 3 , Tm is a transition metal;

[0053] Wherein, the transition metal source is selected from cobalt source, nickel source, manganese source, copper source, zinc source, titanium source, vanadium source

[0054] The preparation method of the crystal material provided by the present invention adopts low-cost potassium source, lithium source, transition metal source and oxalic acid source to prepare through solvothermal reaction, the process is simple, the operation is convenient, and the cost of the positive active material of the battery can be effectively reduced. application prospects.

[0055] In a preferred embodiment of the present invention, the temperature of the...

Embodiment 1

[0150] This embodiment provides a KLi 3 Co(C 2 o 4 ) 3 Crystal material, its preparation method comprises the steps:

[0151] 0.23793g CoCl 2 ·6H 2 O, 0.14778g Li 2 CO 3 , 0.13821g K 2 CO 3 , 0.50428g H 2 C 2 o 4 2H 2 O, 10g H 2 O was put into a 25mL polytetrafluoroethylene inner village hydrothermal reaction kettle, stirred and mixed evenly, the reaction kettle was tightened, put into an oven at 190°C, reacted for 4 hours and cooled to room temperature, the solid product in the reaction kettle was taken out, cleaned, Suction filtration, obtain KLi after drying 3 Co(C 2 o 4 ) 3 crystal particles.

Embodiment 2

[0153] This embodiment provides a KLi 3 Co(C 2 o 4 ) 3 Crystalline material, the difference between its preparation method and embodiment 1 is that K 2 CO 3 It is 0.22642g.

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Abstract

The invention provides a crystal material, a preparation method and application thereof, a battery positive electrode active material, a battery positive electrode material, a battery and electric equipment, and relates to the technical field of battery positive electrode active materials, wherein the molecular formula of the crystal material is KLi3Tm(C2O4)3, Tm is a transition metal, and the transition metal is at least one selected from Co, Ni, Mn, Cu, Zn, Ti, V and Cr. According to the invention, the technical problems that the types of the positive electrode active materials of the existing potassium ion battery are limited and the electrochemical performance of the potassium ion battery prepared from the v is not ideal is not ideal are solved; and the crystal material provided by theinvention has potassium ions and lithium ions at the same time, can be applied to a potassium ion battery as a positive electrode active material, and can also be applied to a lithium ion battery asa positive electrode active material, so that the variety of battery positive electrode active materials is effectively expanded, and the battery capacity is improved.

Description

technical field [0001] The invention relates to the technical field of battery positive electrode active materials, in particular to a crystal material, a preparation method and application thereof, a battery positive electrode active material, a battery positive electrode material, a battery and electrical equipment. Background technique [0002] A secondary battery, also known as a rechargeable battery, is a battery that can be recharged and discharged multiple times. At present, the main secondary battery technologies include lead-acid batteries, nickel-chromium batteries, nickel-metal hydride batteries and lithium-ion batteries, among which lithium-ion batteries are the most widely used. Lithium-ion batteries have the advantages of high energy density, high energy efficiency, long cycle life, no memory effect, fast charge and discharge, etc., so they have great potential in the fields of consumer electronics and electric vehicles, power grid peak regulation, energy stora...

Claims

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Application Information

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IPC IPC(8): C07C51/41C07C55/07H01M4/60H01M10/0525H01M10/054
CPCC07C55/07H01M4/60H01M10/0525H01M10/054C07B2200/13Y02E60/10
Inventor 唐永炳何海燕姚文娇
Owner SHENZHEN INST OF ADVANCED TECH