Lithium battery and electrode for same, and preparation method of solid electrolyte film

A solid electrolyte membrane and lithium-ion battery technology, applied in the field of materials, can solve the problems of high requirements for thin-film electrode equipment, organic solvent pollution, complex process, etc., and achieve the effects of simple equipment and process, pollution reduction, and simple equipment

Active Publication Date: 2013-08-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of high equipment requirements, complex process, high energy consumption, and organic solvent pollution of the thin-film electrode prepared by the existing

Method used

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  • Lithium battery and electrode for same, and preparation method of solid electrolyte film
  • Lithium battery and electrode for same, and preparation method of solid electrolyte film
  • Lithium battery and electrode for same, and preparation method of solid electrolyte film

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Embodiment 1: In this embodiment, the positive electrode of the lithium ion battery is LiCoO 2 The preparation method of the electrode is carried out according to the following steps:

[0031] According to the mass ratio of 8.7:0.5:0.8, the active material LiCoO 2 , Conductive agent acetylene black and binder PVDF powder are weighed, the ball milling speed is 200~450r / min, and the ball mill is mixed evenly for 1 hour, and then the mixed material is transferred to the laser printing cartridge. The aluminum foil is fixed on the substrate with tape, and the uniform electrode to be prepared can be obtained by printing.

Example Embodiment

[0032] Specific embodiment 2: The preparation method of the positive electrode of the lithium ion battery in this embodiment is carried out according to the following steps:

[0033] According to the mass ratio of 8:1:1, the active material LiNi 1 / 3 Co 1 / 3 Mn 1 / 3 O 2, Conductive agent acetylene black and binder PVDF powder are weighed, the ball milling speed is 200~450r / min, and the ball mill is mixed evenly for 1 hour, and then the mixed material is transferred to the laser printing cartridge. The copper foil is fixed on the substrate with tape, and the uniform electrode to be prepared can be obtained by printing.

Example Embodiment

[0034] Specific embodiment three: the preparation method of the lithium ion battery negative graphite electrode in this embodiment is carried out according to the following steps:

[0035] According to the mass ratio of 8:1:0.5:0.5, the active material graphite, conductive agent acetylene black and binder (CMC, SBR) powder are weighed, and the ball milling speed is 200~450r / min. of substances transferred to the laser print cartridge. The copper foil was fixed on the substrate with tape, and the printing was repeated twice to obtain the uniform electrode to be prepared.

[0036] figure 1 The electrodes are laser-printed in this embodiment. The substrate is white paper, the base is the current collector copper foil, and the black is the active material electrode. from figure 1 It can be seen that electrodes can be printed according to the method and the size of the printed electrodes can be controlled by a computer.

[0037] figure 2 The SEM photograph of the electrode p...

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Abstract

The invention relates to a lithium battery and an electrode for the same, and a preparation method of a solid electrolyte film, and belongs to the technical field of materials, and solves the problems of the film electrode prepared by the traditional method that the requirement on equipment is high, the process is complicated, the energy consumption is high and the pollution of organic solvent exists. A computer laser printing technology is used for preparing the electrode, the solid electrolyte film, the lithium battery and a full-solid lithium battery on a printing substrate or a current collector through electrode active substances and solid electrolyte materials. The method not only can conveniently and precisely control the shape, the size and the thickness of the electrode and the battery and can be environment-friendly and simple in equipment, but also can realize the mass production, can greatly reduce the production cost of the battery and can reduce the environmental pollution of the organic solvent.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a method for preparing electrodes for lithium batteries and lithium ion batteries and solid electrolyte membranes. Background technique [0002] With the development of MEMS and VLSI technology, higher and higher requirements are put forward for the miniaturization and integration of energy, and the rapid development of civil electronic devices such as sensors, smart cards, portable electronic devices and many other fields, It also puts forward higher requirements for the miniaturization, miniaturization and thin film of chemical power sources, and the development of micro chemical power sources has become a new hot spot. Compared with other chemical power sources, the high specific energy of lithium-ion batteries makes it play an important role in micro power sources, and the preparation of thin film electrodes is one of the keys to the manufacture of micro batteries. Methods f...

Claims

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Application Information

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IPC IPC(8): H01M4/139H01M10/058
CPCY02E60/10Y02P70/50
Inventor 马玉林高云智程新群杜春雨尹鸽平
Owner HARBIN INST OF TECH
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