Additive for zinc-based battery

A zinc-based battery and additive technology, which is applied in battery electrodes, alkaline storage batteries, battery pack components, etc., can solve the problems of restricting the application and development of nickel-zinc batteries and the difficulty of further improving the cycle performance of nickel-zinc batteries, and achieves suppression of zinc branches. Crystal formation, avoiding battery failure, and high process repeatability

Inactive Publication Date: 2019-07-02
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have a certain effect on improving the cycle performance of nickel-zinc batteries, but they have not fundamentally solved the problems caused by the material characteristics of the zinc anode material itself, making it difficult to further improve the cycle performance of nickel-zinc batteries, which limits the further development of nickel-zinc batteries. application development

Method used

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  • Additive for zinc-based battery
  • Additive for zinc-based battery
  • Additive for zinc-based battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] An additive for a zinc-based battery, which is prepared through the following steps:

[0038] Add 8g of metal gallium, 2g of metal indium, and 1g of metal tin into a mortar at room temperature, grind and stir for about 12 hours to obtain the additive.

[0039] Assembly of nickel-zinc batteries: The obtained additives are coated on the separator of nickel-zinc batteries for normal nickel-zinc battery assembly.

[0040] The test method for the electrochemical performance of the nickel-zinc battery is as follows:

[0041] (1) The simulated battery adopts a button-type CR2032 system, in which the negative electrode is zinc oxide and the positive electrode is nickel hydroxide.

[0042] (2) The experiment adopts the constant current charge and discharge method to test and analyze the reversible capacity and cycle performance of the electrode material. The charge and discharge system is: voltage range: 1.2-2.0V; cycle number: 1-1500 times.

[0043] Characterize the morpholo...

Embodiment 2

[0049] This embodiment provides a nickel-zinc battery. The difference from embodiment 1 is that the additive described in embodiment 1 is placed on the zinc negative electrode.

[0050] Corresponding electrical performance tests were carried out, and the results are as follows: when charging and discharging at 2C, the stable specific capacity is greater than 550mAh / g; when charging and discharging at the above rate, the capacity can maintain 100% of the initial capacity after 500 repeated charging and discharging.

Embodiment 3

[0052] This embodiment provides a nickel-zinc battery. The difference from embodiment 1 is that the additive described in embodiment 1 is placed in the electrolyte.

[0053] Corresponding electrical performance tests were carried out, and the results are as follows: when charging and discharging at 2C, the stable specific capacity is greater than 550mAh / g; when charging and discharging at the above rate, the capacity can maintain 100% of the initial capacity after 500 repeated charging and discharging.

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Abstract

The invention relates to an additive for a zinc-based battery. The additive for the zinc-based battery is characterized in that the additive is one of metal, alloy and oxides or hydroxides of the metals and the alloy or more; the metal is one of gallium, indium, tin, lead and bismuth or more; the alloy is one of binary or multielement alloys of gallium, indium, tin, lead and bismuth or more; the metal oxide is one of oxides of gallium, indium, tin, lead and bismuth or more; the hydroxide is one of hydroxide of gallium, indium, tin, lead and bismuth or more. After the additive is used, the cycle life of the zinc-based battery is more than 500 times, and the zinc-based battery can be stably charged and discharged at the rate of 0.1-50C. The additive has the advantages that the raw materialsare easy to prepare, and the zinc dendritic crystal inhibition capability is high; and the battery shows excellent electrochemical performance and cycling stability, and can be widely applied to various portable electronic equipment, electric vehicles, aerospace and other fields.

Description

technical field [0001] The invention belongs to the technical field of energy materials, and in particular relates to an additive for zinc-based batteries. Background technique [0002] With the continuous breakthrough of electronic technology and the high attention to energy and environmental protection in the world, the research and development of new green secondary power batteries has always been one of the hot spots of major scientific and technological development plans in various countries. Based on the high energy density of new materials and technologies, there is no Pollution, new systems of recyclable green batteries are constantly emerging, and rapidly develop into a new generation of portable electronic product support power supply and electric vehicles, hybrid vehicles power supply. [0003] The current power battery market includes lead-acid batteries, nickel-cadmium batteries, nickel-metal hydride batteries and lithium-ion batteries, but there are some proble...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M10/26H01M2/16
CPCH01M4/624H01M4/626H01M4/628H01M10/26H01M50/409Y02E60/10
Inventor 杨树斌丁军伟李彬
Owner BEIHANG UNIV
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