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Titanium alloy used for bipolar plate of proton exchange membrane fuel cell

A proton exchange membrane and fuel cell technology, applied in the field of titanium alloys, can solve the problem that corrosion resistance cannot meet the life requirements of proton exchange membrane fuel cells, achieve broad application prospects and economic value, improve service life, and excellent corrosion resistance. Effect

Active Publication Date: 2021-02-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the problem that the corrosion resistance of existing pure titanium and titanium alloys cannot meet the service life requirements of proton exchange membrane fuel cells under the environment of sulfuric acid solution containing F- ions in fuel cells, and provides a method for Titanium Alloys for Bipolar Plates in Proton Exchange Membrane Fuel Cells

Method used

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  • Titanium alloy used for bipolar plate of proton exchange membrane fuel cell
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specific Embodiment approach 1

[0020] Specific Embodiment 1: In this embodiment, a titanium alloy used for a bipolar plate of a proton exchange membrane fuel cell, the composition of the titanium alloy conforms to the following form: Ti-X-Z, with pure titanium as raw material, and X and Z as additive elements; wherein X At least one selected from Co and Ni; Z selected from at most four of Cr, Mo, Nb, Ta and V; the total content of X elements in the titanium alloy is 0.1% to 0.6%, and the total content of Z elements is 0.02-0.4%, the balance is composed of Ti and other unavoidable impurity elements.

[0021] The unavoidable impurity elements mentioned in this embodiment are impurities present in titanium alloys such as O, N, C, H, and Si, which are either impurities in the raw materials for preparing titanium alloys, or are impurities introduced during the preparation of titanium alloys. Impurities.

specific Embodiment approach 2

[0022] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the Co, Ni, Cr, Mo, Nb, Ta and V elements are provided by simple substances or master alloys of simple substances and titanium. Others are the same as the first embodiment.

specific Embodiment approach 3

[0023] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: the form of the simple substance is powder, granule or block. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention belongs to the field of new energy automobiles and fuel cells, and particularly relates to a titanium alloy used for a bipolar plate of a proton exchange membrane fuel cell. The titaniumalloy aims to solve the problem that the corrosion resistance of existing pure titanium and titanium alloy in a fuel cell environment cannot meet the service life requirement of a proton exchange membrane fuel cell. The components of the titanium alloy conform to the following forms: Ti-X-Z; pure titanium is used as a raw material, and X and Z are used as additive elements; X is selected from atleast one of Co and Ni; Z is selected from at most four of Cr, Mo, Nb, Ta and V; and the total content of the X elements in the titanium alloy is 0.1%-0.6%, the total content of the Z elements in thetitanium alloy is 0.02%-0.4%, and the balance is Ti and other inevitable impurity elements. The titanium alloy is used for the bipolar plate of the proton exchange membrane fuel cell, the service lifeof the cell can be remarkably prolonged, and the titanium alloy has a wide application prospect in the fields of new energy automobiles and the like.

Description

technical field [0001] The invention belongs to the field of new energy vehicles and fuel cells, and in particular relates to a titanium alloy used for bipolar plates of proton exchange membrane fuel cells. Background technique [0002] Proton exchange membrane fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. It only produces water and has no pollution to the environment. It is an ideal power source for new energy vehicles. At present, Japan, the United States, South Korea, Germany, China and other countries are vigorously developing proton exchange membrane fuel cell vehicles. Compared with traditional cars, the energy conversion efficiency of proton exchange membrane fuel cell vehicles is as high as 60-80%, which is 2-3 times that of internal combustion engines. The product is clean water, and its work does not produce carbon monoxide and carbon dioxide, nor sulfur and particles Therefore, pro...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/02C22F1/18H01M8/0208
CPCC22C14/00C22C1/02C22F1/183H01M8/0208Y02E60/50
Inventor 孔凡涛朱海峰王晓鹏
Owner HARBIN INST OF TECH
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