Battery and electrolytic solution thereof

An electrolyte and battery technology, applied in secondary batteries, secondary battery manufacturing, secondary battery parts, etc., can solve the problems of potential safety hazards, battery bulging, battery performance deterioration, etc. Attenuation, avoiding battery bulging, suppressing gas effects

Inactive Publication Date: 2015-06-03
POSITEC POWER TOOLS (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, at present, after the battery is used for a period of time, a large amount of gas will be generated inside the battery, which will easily cause the battery to bulge, resulting in a safety hazard in the use of the battery; at the same time, due to the generation of gas, the performance of the battery will deteriorate rapidly

Method used

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  • Battery and electrolytic solution thereof
  • Battery and electrolytic solution thereof

Examples

Experimental program
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Embodiment approach

[0074] In a preferred embodiment, the battery containing the positive electrode collector can also be charged and discharged to achieve the purpose of passivating the positive electrode collector. The voltage is charged to 2.1-2.4V when charging, and the voltage is released to 1.35-2.4V when discharging. 1.45V, charge and discharge times not less than 1.

[0075] In a specific embodiment, when preparing the positive electrode, in addition to the positive electrode active material, depending on the actual situation, it may be necessary to add a positive electrode conductive agent and a positive electrode binder to improve the performance of the positive electrode.

[0076] The positive electrode conductive agent is selected from one or more of conductive polymers, activated carbon, graphene, carbon black, graphite, carbon fibers, metal fibers, metal powders, and metal flakes.

[0077] The positive electrode binder can be selected from polyethylene oxide, polypropylene oxide, po...

Embodiment 1

[0097] Weigh a certain quality of zinc sulfate and lithium sulfate, add water and stir to dissolve, then add a certain amount of boric acid, and configure the concentration of zinc sulfate to be 2mol / L, the concentration of lithium sulfate to be 1mol / L, and the mass percentage of boric acid to be 2%. of electrolyte. The obtained electrolyte solution is denoted as A1.

Embodiment 2

[0099] The difference from Example 1 is that the mass percentage of boric acid is 1%, and the other parts are the same as in Example 1. Obtained electrolyte, denoted as A2.

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Abstract

The invention discloses an electrolytic solution and a battery. The electrolytic solution comprises a solvent which is used for dissolving electrolyte and ionizing the electrolyte; the electrolyte comprises first metal ions and second metal ions; the first metal ions can reversibly escape from or be embedded in the positive electrode of the battery in the charge and discharge processes; the second metal ions are reduced and deposited at the negative electrode to form second metal in the charge process; the second metal is oxidized and dissolved into second metal ions in the discharge process; the electrolytic solution also comprises an additive, wherein the additive comprises an oxyacid root ion compound of boron. The battery comprises the positive electrode, the negative electrode and the electrolytic solution provided by the invention; the positive electrode comprises a positive electrode active substance through which the first metal ions can reversibly escape and embedded. According to the invention, generation of a gas is effectively inhibited, thus bulging of the battery is avoided, and the safety performance of the battery is reinforced.

Description

technical field [0001] The invention belongs to the field of batteries, in particular to a battery based on internal ion exchange. [0002] The invention also relates to electrolytes for batteries 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 working principle of the battery is that the positive electrode is based on the extraction-interc...

Claims

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Application Information

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IPC IPC(8): H01M10/02H01M10/04
CPCH01M10/4235Y02E60/10Y02P70/50
Inventor 刘洋陈璞
Owner POSITEC POWER TOOLS (SUZHOU) CO LTD
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