HYDROGEN FUEL CELL BIPOLAR PLATE BASE MATERIAL AND PREPARATION METHOD FOR FOIL THEREOF

WIPO Patent Application WO/2024/051206

A1

Disclosed in the present invention are a hydrogen fuel cell bipolar plate base material and a method for preparing a foil thereof. The base material comprises the following components in percentage by weight: 0.1-0.5% of Cu, 0.5-1% of Nb, and 0.05-0.2% of Ge, with the balance being Ti and inevitable impurities. The method comprises: weighing required raw materials according to components of a base material to be prepared; melting the raw materials to obtain a round ingot of a preset specification; forging the round ingot and performing hot rolling on a coil strip to obtain a hot-rolled coil strip; performing cold rolling processing on the hot-rolled coil strip to obtain a titanium alloy foil; and annealing the titanium alloy foil. According to the present invention, starting from component design, the conductivity of a titanium alloy is improved by adding trace alloy elements, without losing the corrosion resistance and extensibility of the material, and the corrosion resistance of the base material is improved, so that the service life of a hydrogen fuel cell is greatly prolonged.

YANG LIU (CN)
WANG YING (CN)
WANG LIYA (CN)

PCT/CN2023/094717

March 14, 2024

May 17, 2023

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PANGANG GROUP PANZHIHUA IRON & STEEL RES INSTITUTE CO LTD (CN)
CHENGDU ADVANCED METAL MAT IND TECH RES INST CO LTD (CN)

B21B1/40; C22C1/02; C22C14/00; H01M8/0208

CN115740003A	2023-03-07
JP2009068026A	2009-04-02
JP2017073218A	2017-04-13
CN114589213A	2022-06-07
CN112813285A	2021-05-18
CN113122741A	2021-07-16
CN114737036A	2022-07-12
US20200347484A1	2020-11-05

LIAN & LIEN IP ATTORNEYS (CN)

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