Method for pre-burying of negative electrode of hybrid super capacitor

A supercapacitor and pre-intercalated lithium technology, which is applied in the field of electrochemical energy, can solve the problems of large attenuation of electrolyte concentration, and achieve the effects of saving formation time, safe technical means, and increasing capacity

Inactive Publication Date: 2015-01-28
惠州市鸣曦科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to overcome the deficiencies of the prior art, the present invention provides a method for pre-embedding lithium in the negative electrode of a hybrid supercapacitor, the purpose of which is to solve the problem that the electrolyte concentration of the existing hybrid supercapacitor has a large attenuation range

Method used

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  • Method for pre-burying of negative electrode of hybrid super capacitor
  • Method for pre-burying of negative electrode of hybrid super capacitor
  • Method for pre-burying of negative electrode of hybrid super capacitor

Examples

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Embodiment 1

[0027] Activated carbon is used as the positive electrode active material, lithium titanate is used as the negative electrode active material, and the TF4035 diaphragm developed by NKK Company is used as the diaphragm of the lithium-ion supercapacitor. The electrolyte uses 1.2M lithium perchlorate as the main solute, organic borate lithium as the auxiliary solute, ethylene carbonate, dimethyl carbonate, and methyl ethyl carbonate as the solvent, and the film-forming additive is vinylene carbonate , 1,3 propane sultone, control the surface density of the positive and negative electrodes, make the mass ratio of the positive and negative active materials 3.5:1, separate the positive and negative plates with a diaphragm and combine them into a battery cell in a laminated manner, and then charge The positive and negative poles of the core are welded with lugs and glued, and the battery core is shaped by hot and cold pressing; then put into an aluminum-plastic film shell, top-sealed,...

Embodiment 2

[0029]Activated carbon is used as the positive electrode active material, graphite is used as the negative electrode active material, single-layer PP, single-layer PE, and multi-layer PP and PE composite microporous film materials are used as the diaphragm of the lithium-ion supercapacitor. The electrolyte uses 1.25M lithium hexafluorophosphate as the solute, the solvent is ethylene carbonate, propylene carbonate, methyl ethyl carbonate, dimethyl carbonate, and the film-forming additives are vinylene carbonate and 1,3 propane sultone. Control the surface density of the positive and negative electrodes, set the mass ratio of the positive and negative active materials to 6.5:1, separate the positive and negative electrodes with a diaphragm and combine them into a battery cell in a laminated manner, and then weld the positive and negative electrodes of the battery to the tabs, paste Glue, the cell is reshaped by hot and cold pressing; then put it into an aluminum-plastic film casi...

Embodiment 3

[0031] Activated carbon is used as the positive electrode active material, and mesophase carbon microspheres (MCMB) are used as the negative electrode active material. Single-layer PP, single-layer PE, and multi-layer PP and PE composite microporous film materials are used as the diaphragm of the lithium-ion supercapacitor. The electrolyte uses 1.25M lithium hexafluorophosphate as the solute, the solvent is ethylene carbonate, diethyl carbonate, dimethyl carbonate, the film-forming additives are vinylene carbonate, 1,3 propane sultone, and the positive and negative electrodes are controlled One-sided density, the mass ratio of the positive and negative active materials is 6.5:1, the positive and negative plates are separated by a diaphragm and combined into a battery cell in a laminated manner, and then the positive and negative electrodes of the battery cell are welded with tabs and glued, and the battery cell passes through Hot and cold pressure shaping; then put it into an a...

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Abstract

The invention discloses a method for the pre-burying of the negative electrode of a hybrid super capacitor, and belongs to the technical field of electrochemical energy. The hybrid super capacitor takes a multi-pore carbon material as a positive active material, an embeddable carbon material or an embeddable metallic oxide as a negative active material and an organolithium saline solution as an electrolyte. In a first formation process, the secondary addition of high concentration electrolyte is added to the hybrid super capacitor in a quiescent time of charging, so as to make up for the absorption loss of the reduction of ionic concentration of the electrolyte, which cannot be inversely buried, and the irreversibility of a positive electrode in the first charging process, thereby enabling the reduction amplitude of concentration of the electrolyte to be small.

Description

technical field [0001] The invention relates to the technical field of electrochemical energy, in particular to a method for pre-embedding lithium in the negative electrode of a hybrid supercapacitor. Background technique [0002] With the rapid growth of population and the rapid development of social economy, resources and energy are becoming increasingly scarce, and environmental protection has been paid more and more attention. The development and conservation of energy has become an important issue in today's world. Energy is the basis for the existence and development of human society. Today's society based on fossil energy is increasingly confronted with energy shortages and environmental pollution crises. At the same time, with the advent of the high-tech era of information technology, the form of energy applications is changing, and the demand for renewable, pollution-free, small discrete, portable high-performance power supplies is growing rapidly. Common battery s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86
CPCY02E60/13H01G11/86
Inventor 代波丁帮助
Owner 惠州市鸣曦科技有限公司
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