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Three-dimensional electrode manufacturing method based on efficient ion diffusion

A three-dimensional electrode, high-efficiency technology, applied in the direction of battery electrodes, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of inability to adjust the three-dimensional structure accurately, poor electrode surface consistency, etc., and achieve the optimization and improvement of the redox reaction process Mass density, effect to ensure consistency

Pending Publication Date: 2022-08-09
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, this application provides a three-dimensional electrode manufacturing method based on efficient ion diffusion to solve the problems of poor electrode surface consistency and inability to accurately adjust the three-dimensional structure in the current technical means to improve battery performance

Method used

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  • Three-dimensional electrode manufacturing method based on efficient ion diffusion
  • Three-dimensional electrode manufacturing method based on efficient ion diffusion
  • Three-dimensional electrode manufacturing method based on efficient ion diffusion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] The example of this embodiment takes a one -way groove on the lithium iron phosphate positive electrode.

[0108] First, obtain M according to the lithium iron phosphate material. 1 For 1, K k 1 It is 0.15, k k 2 For 0.6, k 3 It is 0.85, and then determine the value of y to 40 μm according to the formula (1) and formula (3) to meet the value of the T as much as possible. Finally, the formula (1) is substituted into the formula (2). When the T value is as large as possible, the maximum value of SR is obtained by the second function curve. The maximum value of SR determines the corresponding X value of 180 μm.

[0109] It can be seen that the unidirectional grooves of this embodiment are 40 μm, the spacing spacing is 105 μm, and the groove depth is 180 μm.

[0110] After determining the tank width, grooves and depth of the slot of the unidirectional groove, began to prepare iron phosphate positive electrode tablets:

[0111] Before starting to manufacture iron phosphate posit...

Embodiment 2

[0119] The example of this embodiment takes a one -way groove on the lithium iron phosphate positive electrode.

[0120] First, obtain M according to the lithium iron phosphate material. 1 For 1, K k 1 It is 0.15, k k 2 For 0.6, k 3 It is 0.85, and then determine the value of y to 80 μm according to the formula (1) and formula (3) to meet the value of the T as much as possible. After determining the value of Y, the Z value is obtained by the formula 3; Finally, the formula (1) is substituted into the formula (2). When the T value is as large as possible, the maximum value of SR is obtained by the second function curve. The maximum value of SR determines the corresponding X value of 180 μm.

[0121] It can be seen that the unidirectional grooves of this embodiment are 80 μm, the spacing spacing is 210 μm, and the groove depth is 180 μm.

[0122] After determining the tank width, grooves and depth of the slot of the unidirectional groove, began to prepare iron phosphate positive ele...

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Abstract

The invention provides a three-dimensional electrode manufacturing method based on efficient ion diffusion, and belongs to the technical field of chemical batteries and electrode modification and manufacturing. Acquiring a compensation coefficient and a plurality of active material coefficients based on the material of the positive electrode plate; based on the compensation coefficient and the plurality of active material coefficients, determining an opening size parameter value and a unit spacing value which meet a first preset condition; determining a depth value meeting a second preset condition based on the unit spacing and the opening size parameter value; and based on the opening size parameter value, the unit spacing and the depth value, etching the surface of the positive electrode plate in a precise micro-nano mode to obtain the three-dimensional electrode with the three-dimensional structure. According to the method, the electrode oxidation-reduction reaction process is optimized by precisely planning the opening size parameter value, the unit spacing and the depth value of the three-dimensional structure; and meanwhile, the three-dimensional structure is etched in a precise micro-nano mode, so that the consistency of the surface of the electrode and the precise manufacturing of the three-dimensional structure are ensured.

Description

Technical field [0001] This application involves chemical batteries and electrode modification and manufacturing technology fields. Specifically, it involves a three -dimensional electrode manufacturing method based on an ion -based high -efficiency diffusion. Background technique [0002] Since the 20th century, the comprehensive development of the energy crisis, environmental pressure and science and technology has enabled the requirements of various industries to increase the energy density, magnification and cycle performance of batteries in various industries. Various types of chemical batteries such as lithium batteries, sodium batteries, and even supercapacitors. As a modern energy storage device and solution, it has been widely used in electronic equipment, electric vehicles and energy storage power stations.器件中完成自己的工作使命;但是由于高精尖行业对电池性能的需求,将高压实密度、高能量密度电池应用工作时,在离子嵌入与脱出的过程中材料体积极易膨胀,从而造成How to further improve the comprehensive performance of energy storage batteries has becom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/13H01M4/139H01M10/052
CPCH01M4/13H01M4/139H01M10/052H01M2004/021Y02P70/50Y02E60/10
Inventor 孙孝飞侯相国梅雪松韩岩彬周品睿王文君崔健磊
Owner XI AN JIAOTONG UNIV