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Hydrogen release film

A hydrogen and laminated membrane technology, applied in hydrogen separation, membrane technology, electrical components, etc., can solve problems such as cracking, crushing, and low reliability of safety valves, and achieve the goal of preventing rupture, achieving long life, and high reliability Effect

Inactive Publication Date: 2017-08-18
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional alloy film may be cracked or crushed before the internal pressure of the electrochemical element reaches a predetermined pressure, and there is a problem of low reliability as a safety valve.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] 〔Production of hydrogen-releasing film (Ag content 20mol%) by rolling method〕

[0062] The Pd and Ag raw materials were weighed so that the Ag content in the ingot was 20 mol %, and charged into an arc melting furnace equipped with a water-cooled copper crucible, and arc melting was performed in an Ar gas atmosphere at atmospheric pressure. The obtained button ingot was cold-rolled to a thickness of 5 mm using a two-stage rolling mill with a roll diameter of 100 mm, and a sheet material was obtained. Then, the rolled sheet was put into a glass tube, and both ends of the glass tube were sealed. The inside of the glass tube was depressurized to 5 × 10 at room temperature -4 Pa, then raised the temperature to 700°C and left it for 24 hours, then cooled to room temperature. This heat treatment eliminates the segregation of Pd and Ag in the alloy. Next, the plate was cold-rolled to a thickness of 100 μm using a secondary rolling mill with a roll diameter of 100 mm, and fu...

Embodiment 2

[0064] 〔Production of hydrogen-releasing film (Ag content 22 mol%) by rolling method〕

[0065] A Pd-Ag hydrogen release film having a thickness t of 25 μm and an Ag content of 22 mol % was produced in the same manner as in Example 1 except that Pd and Ag raw materials were used so that the Ag content in the ingot was 22 mol %.

Embodiment 3

[0067] 〔Production of hydrogen-releasing film (Ag content 60 mol%) by rolling method〕

[0068] A Pd-Ag hydrogen release film having a thickness t of 25 μm and an Ag content of 60 mol % was produced in the same manner as in Example 1 except that Pd and Ag raw materials were used so that the Ag content in the ingot was 60 mol %.

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Abstract

The present invention provides a hydrogen release film and hydrogen release laminate film that have high reliability as a safety relief valve due to defects such as cracks not arising before the internal pressure of an electrochemical element has reached a predetermined pressure. The hydrogen release film contains an alloy having Pd as a required metal, and the size of the crystal grains in the alloy is at least 0.028 [mu]m.

Description

technical field [0001] The present invention relates to a hydrogen-releasing film provided in batteries, capacitors, electrochemical elements such as capacitors and sensors, and the like. More specifically, it relates to a hydrogen-releasing film having a function of releasing the generated hydrogen to the outside in a usage environment of about 150° C. or lower in an electrochemical device or the like that generates hydrogen gas during use to increase internal pressure. Background technique [0002] In recent years, aluminum electrolytic capacitors have been used in large power sources such as inverters for wind power generation and photovoltaic power generation, storage batteries, and the like. Aluminum electrolytic capacitors may generate hydrogen gas inside due to reverse voltage, overvoltage, and overcurrent. If a large amount of hydrogen gas is generated, the case may be broken due to an increase in internal pressure. [0003] Therefore, a safety valve provided with a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/12H01G11/14H01M2/12
CPCH01G9/12H01G11/14B01D69/02C01B3/505C22C5/04Y02E60/10H01M50/30B01D69/1213B01D71/0223Y02E60/13H01M50/394H01M50/3425B21B3/00C23C14/14C23C14/34H01M10/0525H01M2200/20
Inventor 福冈孝博吉良佳子石井恭子秦健太汤川宏南部智宪
Owner NITTO DENKO CORP
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