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Method for preparing solid electrolyte with lead wire and electrode

A solid electrolyte and electrode technology, applied in the field of solid electrolyte preparation, can solve the problems of large thickness and poor mechanical strength of solid electrolyte, and achieve the effect of strong bonding force and high mechanical strength

Inactive Publication Date: 2011-02-09
西安航科等离子体科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems of large thickness and poor mechanical strength of the existing solid electrolyte, the present invention provides a method for preparing a solid electrolyte with wires and electrodes, which can not only prepare a solid electrolyte material with strong binding force, but also Make the solid electrolyte thin enough and have high mechanical strength

Method used

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  • Method for preparing solid electrolyte with lead wire and electrode

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preparation example Construction

[0021] The preparation method of the solid electrolyte with wires and electrodes of the present invention comprises the following steps:

[0022] 1] Wrap the carbon fiber paper 2 on the mold 1 with a smoothness less than 0.8, and fix the carbon fiber paper 2 on both ends of the mold 1;

[0023] 2] Fix a wire 5 on the carbon fiber paper 2 in step 1];

[0024] 3) On the carbon fiber paper 2 in step 2], a magnetron sputtering process is used to sputter an electrode material with high temperature resistance and alkali metal corrosion resistance to obtain a porous film electrode 3;

[0025] 4] Spraying the solid electrolyte material on the electrode 3 prepared in step 3] using a plasma spraying process to obtain a solid electrolyte 4;

[0026] 5] Remove the mold 1 and the carbon fiber paper 2 to obtain a solid electrolyte with wires and electrodes.

[0027] The material of the mold is graphite, ceramics or refractory metals and their alloys. The mold is in the shape of a stick. ...

Embodiment 1

[0031] Embodiment 1: Wrap carbon fiber paper with a thickness of 0.15-0.35 mm on a graphite rod with a diameter of 5 mm, and fix it at both ends. A molybdenum wire was placed on the carbon fiber paper as an electrode wire, and then a TiN layer with a thickness of 5 μm and a porosity of 28% was prepared by sputtering on the carbon fiber paper using a magnetron sputtering process. And then on the TiN layer by plasma spraying (the powder is Na-β″-Al 2 o 3 powder) to prepare dense Na-β″-Al with a thickness of 0.2mm 2 o 3 layer. The integrated TiN / Na-β″-Al is obtained by removing the graphite rod and carbon fiber paper 2 o 3 Tube. This embodiment can be used in sodium sulfur batteries, alkali metal thermoelectric converters and sodium sensors, among others.

Embodiment 2

[0032] Embodiment 2: Wrap carbon fiber paper with a thickness of 0.15-0.35 mm on a graphite rod with a diameter of 4.5 mm, and fix it at both ends. A molybdenum wire was placed on the carbon fiber paper as an electrode wire, and then a TiN layer with a thickness of 5 μm and a porosity of 29% was obtained by sputtering on the carbon fiber paper 2 using a magnetron sputtering process. Then on the TiN layer by plasma spraying (raw material ratio: Li 2 O: 0.69%~0.85%, Na 2 O: 8.80% ~ 9.40%, the rest is α-Al 2 o 3 ) to produce β″-Al 2 o 3 The phase content is close to 100%, the thickness is 0.3mm, dense Na-β″-Al 2 o 3 layer. The integrated TiN / Na-β″-Al is obtained by removing the graphite rod and carbon fiber paper 2 o 3 Tube. This embodiment can be used in sodium sulfur batteries, alkali metal thermoelectric converters and sodium sensors, among others.

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Abstract

The invention relates to a method for preparing solid electrolyte with a lead wire and an electrode. The method comprises the following steps of: 1, coating carbon fiber paper on a die with the fineness less than 0.8, and fixing the carbon fiber paper at two ends of the die; 2, fixing the lead wire on the carbon fiber paper; 3, sputtering an electrode material with high temperature resistance and alkali metal corrosion resistance on the carbon fiber paper by adopting a magnetic control sputtering process to obtain a porous membrane electrode; 4, spraying a solid electrolyte material on the prepared electrode by adopting a plasma spraying process to obtain the solid electrolyte; and 5, removing the die and the carbon fiber paper to obtain the solid electrolyte with the lead wire and the electrode. The method solves the technical problems of large thickness and poor mechanical strength of the conventional solid electrolyte, can prepare the solid electrolyte with strong binding force, and ensures that the solid electrolyte is thin enough and has higher mechanical strength.

Description

technical field [0001] The invention relates to a preparation method of a solid electrolyte material, in particular to a preparation method of a solid electrolyte with wires and electrodes. Background technique [0002] The output voltage of the battery has a great relationship with the thickness of the solid electrolyte and the contact condition between the solid electrolyte and the electrodes. The thickness of the solid electrolyte determines its resistance, the greater the resistance, the smaller the battery output voltage. Therefore, the thickness of the solid electrolyte should be minimized. The existing process generally uses isostatic pressing to directly prepare solid electrolytes. The minimum wall thickness of the prepared solid electrolytes can only reach 1 mm, and it is difficult to ensure mechanical strength. Moreover, the inner electrode is generally made by coating the slurry on the inner wall of the solid electrolyte and sintering, and the contact resistance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04
CPCY02E60/10Y02P70/50
Inventor 王浩静刘欢王红飞范立东刘福杰李福平
Owner 西安航科等离子体科技有限公司