Unlock instant, AI-driven research and patent intelligence for your innovation.

Battery

A battery and electrolyte technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as deterioration of battery electrochemical performance, limiting battery, etc., to improve self-discharge problems, inhibit precipitation, improve electrochemical performance and safety. performance effect

Active Publication Date: 2019-01-01
POSITEC POWER TOOLS (SUZHOU) CO LTD +1
View PDF17 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, at present, the self-discharge problem of this type of battery is relatively serious, which will lead to rapid deterioration of the electrochemical performance of the battery and limit the practical application of this type of battery. Therefore, it is urgent to find a new ion exchange battery that can improve the self-discharge problem of the battery.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0077] In a preferred embodiment, the separator is a separator that separates the electrolyte into positive electrolyte and negative electrolyte. That is, the first metal ion is confined in the positive electrolyte, and the second metal ion is confined in the negative electrolyte, so that the diaphragm can prevent the mutual contamination of the positive and negative electrolytes, and the electrolyte that is more suitable for the positive or negative can be selected, but it does not affect Ionic charge transfer. For example, using an anion exchange membrane or a hydrogen ion exchange membrane as a diaphragm, the first metal ion in the positive electrolyte cannot pass through the diaphragm, so it cannot enter the negative electrolyte and can only be limited to the positive electrolyte; the second metal ion in the negative electrolyte Metal ions cannot pass through the diaphragm, so they cannot enter the positive electrolyte, and can only be confined in the negative electrolyte....

Embodiment 1

[0081] Mix lithium manganate LMO, conductive agent graphite, binder SBR and CMC in water according to the mass ratio of 90:5:2.5:2.5, add lithium manganate LMO, conductive agent graphite, binder SBR and CMC total mass 5% Bi 2 o 3 , mixed to form a uniform positive electrode slurry. The positive electrode slurry was coated on both sides of the positive electrode current collector (50 μm stainless steel wire mesh) coated with a conductive film to form an active material layer, which was then pressed into sheets and cut into a size of 8×10 cm to make a positive electrode. The thickness of the positive electrode sheet is 0.4mm, and the surface density of the positive electrode active material is 750g / m 2 .

[0082] A zinc foil with a thickness of 50 μm was used as the negative electrode. The diaphragm is an AGM glass fiber diaphragm. The separator and negative electrode are comparable in size to the positive electrode.

[0083] Weigh a certain mass of zinc sulfate and lithiu...

Embodiment 2

[0086] The difference from Example 1 is that lithium manganate LMO, conductive agent graphite, binder SBR and CMC are mixed in water according to the mass ratio of 90:5:2.5:2.5, and lithium manganate LMO, conductive agent graphite, Binder SBR and CMC total mass 5% TiO 2 , mixed to form a uniform positive electrode slurry.

[0087] The obtained battery is denoted as S2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

A battery includes a positive electrode, a negative electrode, and an electrolyte, and the positive electrode includes a positive electrode active material capable of reversible deintercalation and intercalation of s first metal ion and a positive electrode conductive agent; the electrolyte solution comprises a solvent capable of dissolving and ionizing the electrolyte; the electrolyte comprises afirst metal ion and a second metal ion, wherein the second metal ion can be reduced and deposited into a second metal in the negative electrode during charging and discharging, and the second metal can be reversibly oxidized and dissolved into the second metal ion; and the battery also includes an additive added to the positive electrode, the additive is an inorganic oxide, and the oxygen evolution overpotential of the inorganic oxide is not lower than 2V. The battery provided by the invention can improve the problem of corrosion existing in the conductive agent in the positive electrode of the battery, thereby further improving the self-discharge problem of the battery and improving the electrochemical performance of the battery.

Description

[0001] This application is a divisional application of the Chinese invention patent application named battery and application number 201310711703.0 filed by the applicant on December 20, 2013. technical field [0002] The invention belongs to the field of batteries, in particular to a battery based on internal ion exchange. Background technique [0003] Lead-acid batteries, which have been around for more than a hundred years, have mature battery technology and occupy an absolute market share in energy storage fields such as car starter batteries, electric bicycles, and UPS. Although the lead-acid battery has a low cycle life and a relatively low energy density, it has the advantages of very low price and high cost performance. Therefore, in recent years, nickel-metal hydride batteries, lithium-ion batteries, sodium-sulfur batteries, etc., cannot replace lead-acid batteries in the field of energy storage. [0004] A battery based on internal ion exchange has emerged. The w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M10/0525
CPCH01M4/628H01M2004/028Y02E60/10
Inventor 刘洋陈璞
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD