Lithium di-ionic total battery using mixed carbon material as positive and negative electrodes

A hybrid carbon, positive and negative technology, used in battery electrodes, secondary batteries, non-aqueous electrolyte batteries, etc., can solve problems such as commercialization of high-cost dual-ion batteries, and achieve structural stability, environmental friendliness, and positive and negative electrodes. Material stabilization effect

Inactive Publication Date: 2018-10-09
XIFENG 2D FUJIAN MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high cost still existing in lithium-ion batteries and commercialization of dual-ion batteries, the present invention provides a preparation method of lithium dual-ion full batteries in which mixed carbon materials are used for positive and negative electrodes.

Method used

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  • Lithium di-ionic total battery using mixed carbon material as positive and negative electrodes
  • Lithium di-ionic total battery using mixed carbon material as positive and negative electrodes
  • Lithium di-ionic total battery using mixed carbon material as positive and negative electrodes

Examples

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Embodiment 1

[0041] S01, prepare mixed carbon material:

[0042]Mix graphene and nano-graphene at a weight ratio of 6:4, then grind for 12 hours in a water-resistant environment, then raise the temperature to 100°C at a rate of 3°C under a protective gas atmosphere, and then treat at a constant temperature for 15 hours to obtain a mixed carbon materials;

[0043] S02, preparing mixed carbon positive and negative electrodes;

[0044] Mix the mixed carbon material obtained by S01: acetylene black: carboxymethyl cellulose in a mass ratio of 8:1:1; then dissolve the mixture in ethanol: H 2 The mass ratio of O was 1:2 in the mixed solution and continued to stir for 20h; then the mixture was mixed according to the average weight of the carbon material about 4mg / cm 2 Coated on the aluminum foil of the positive electrode substrate, the average weight of the mixed carbon material is about 2mg / cm 2 Coated on the negative electrode substrate copper foil, and dried them in a vacuum oven at 70°C for...

Embodiment 2

[0052] S01, prepare mixed carbon material:

[0053] Graphene and molybdenum disulfide were mixed at a weight ratio of 8:2, then ground for 12 hours in a water-resistant environment, and then heated to 100°C at a rate of 3°C under a protective gas atmosphere, and then treated at a constant temperature for 15 hours to obtain a mixed carbon material 1;

[0054] Mix nano-graphite and NiCoO4 at a mass ratio of 9:1, then grind for 15 hours in a water-absolute environment, then raise the temperature to 100°C at a rate of 3°C under a protective gas atmosphere, and then treat at a constant temperature for 18 hours to obtain a mixed carbon material 2;

[0055] S02, preparing mixed carbon positive and negative electrodes;

[0056] Mix the mixed carbon material 1 obtained in S01: acetylene black: carboxymethyl cellulose in a mass ratio of 8:1:1; then dissolve the mixture in ethanol: H 2 The mass ratio of O was 1:2 in the mixed solution and continued to stir for 20h; then the mixture wa...

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Abstract

The invention discloses a preparation method of a lithium di-ionic total battery using a mixed carbon material as positive and negative electrodes. The method comprises the following steps: firstly preparing the mixed carbon material; then using the mixed carbon material to prepare the mixed carbon positive and negative electrodes, and then preparing a lithium salt electrolyte; and finally assembling the mixed carbon positive and negative electrodes and the lithium salt electrolyte to form the total battery. The carbon material used for the positive and negative electrodes is easy to get and is cheap and environmentally friendly, the mixed carbon material is mixed from various carbon materials, the structure is stable, the mixed carbon material is not consumed or lost in the charge-discharge process, the long-term cycling stability is high, and the rate capability is excellent.

Description

technical field [0001] The invention relates to the field, in particular to a lithium double-ion full battery using mixed carbon materials as positive and negative electrodes. Background technique [0002] Lithium-ion batteries (LIBs) are ubiquitously used in portable electronics and network storage due to their relatively high discharge voltage, energy density, and good power performance. With the progress and demands of modern science and technology, the development of new rechargeable battery systems with high energy density and low cost has received more and more attention. Lithium-ion batteries currently on the market generally use lithium cobalt oxide, lithium manganese oxide, lithium iron phosphate, and ternary materials as positive electrode materials. These materials are expensive, making lithium-ion batteries costly. Furthermore, due to reasons such as the organic electrolyte system, the internal resistance of the battery is relatively large, and it cannot be disc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/058H01M4/36H01M4/587H01M10/0525
CPCH01M4/364H01M4/587H01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 林楷睿
Owner XIFENG 2D FUJIAN MATERIAL TECH CO LTD
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