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Anodic capillary layer for beta battery and beta battery comprising same

A capillary layer, anode technology, applied in the direction of electrode carrier/current collector, secondary battery, circuit, etc., can solve the problems such as can not meet the actual large-scale application, high cost, complex technical process and so on

Active Publication Date: 2014-12-17
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of treatment method is relatively complex and costly, and generally needs to be operated under high vacuum, which cannot meet the needs of actual large-scale applications.

Method used

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  • Anodic capillary layer for beta battery and beta battery comprising same
  • Anodic capillary layer for beta battery and beta battery comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] The present invention is further described below in conjunction with specific examples. However, it should be understood that these examples are only used to illustrate the present invention and not to limit the scope of the present invention. The test methods for which specific conditions are not indicated in the following examples are generally in accordance with conventional conditions, or in accordance with the conditions suggested by the manufacturer. All percentages and parts are by weight unless otherwise indicated.

[0040] The beta-alumina and other solid electrolytes used in the following comparative examples and examples were all provided by the Institute of Ceramics, Chinese Academy of Sciences.

Embodiment 1

[0044] The cleaning conditions of Beta-alumina are the same as those of the comparative example. A porous metal nickel medium with a pore size of 5-10 μm is coated on the surface of beta-alumina by coating method to obtain a sample for testing the wetting angle.

[0045] The wetting angle between the sample and sodium was tested according to the method of the comparative example, the test conditions were the same as the comparative example, and the test results are shown in Table 1 below. It can be seen from the data in Table 1 that the wetting angle between the beta-alumina sample coated with porous metal nickel medium obtained in this example and sodium is reduced by 73.5% compared with that before coating.

[0046] figure 1 It is a cross-sectional scanning electron photo of the porous metallic nickel medium coated on the surface of beta-alumina in this example. The thickness of the porous metal nickel medium in the figure is about 6 μm, showing a network structure.

[00...

Embodiment 2

[0049] The cleaning conditions of Beta-alumina are the same as those of the comparative example. A porous metal nickel medium with a pore size of 4-15 μm was coated on the surface of beta-alumina by casting method to obtain a sample for testing the wetting angle.

[0050] The wetting angle between the sample and sodium was tested according to the method of the comparative example, the test conditions were the same as the comparative example, and the test results are shown in Table 1 below. It can be seen from the data in Table 1 that the wetting angle between the beta-alumina sample coated with porous metal nickel medium obtained in this example and sodium is reduced by 76.8% compared with that before coating.

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Abstract

The invention relates to an anodic capillary layer for a beta battery and a beta battery comprising the same. The anodic capillary layer for the beta battery is provided, wherein the beta battery comprises an anode, a solid electrolyte and a cathode; the anodic capillary layer comprises: a porous metal medium which is arranged along the surface of the solid electrolyte so as to realize good contact of the anode with the solid electrolyte on the surface of the solid electrode; and an active fluid distribution layer which is arranged between the solid electrolyte and the anode to realize effective transmission of ions and electrons. The invention also provides a beta battery comprising the anodic capillary layer.

Description

technical field [0001] The present invention relates to a beta battery such as a sodium-sulfur battery, and more particularly, to an anode capillary layer for a beta battery such as a sodium-sulfur battery, and a beta battery comprising the anode capillary layer. Background technique [0002] Since the 1970s, sodium-sulfur battery, as a typical beta battery, has attracted attention in many fields such as electric vehicles and energy storage due to its high energy density, high cycle efficiency, low cost, and environmental friendliness. Wide interest. At present, only a few countries such as Japan, the United States and China are researching sodium-sulfur batteries, and only Japan has industrialized sodium-sulfur batteries, while my country is still working hard. The key issues facing the final practical use of sodium-sulfur batteries are to further reduce the internal resistance of the battery and improve the safety of the battery. For the anodes of sodium-sulfur batteries...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/80H01M10/39
CPCY02E60/10
Inventor 温兆银胡英瑛吴相伟曹佳弟吴梅芬张敬超
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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