HIGH-ENTROPY HYDROGEN STORAGE ALLOY, NEGATIVE ELECTRODE FOR ALKALINE STORAGE BATTERIES, AND ALKALINE STORAGE BATTERY

Title:

HIGH-ENTROPY HYDROGEN STORAGE ALLOY, NEGATIVE ELECTRODE FOR ALKALINE STORAGE BATTERIES, AND ALKALINE STORAGE BATTERY

Document Type and Number:

WIPO Patent Application WO/2022/250093

Kind Code:

A1

Abstract:

This high-entropy hydrogen storage alloy is composed of 5% by atom to 35% by atom of Ti, 5% by atom to 35% by atom of Zr, 5% by atom to 35% by atom of Ni, 5% by atom to 35% by atom of Cr and 5% by atom to 35% by atom of Mn, while having an entropy of mixing ∆Smix represented by formula (1) of 1.5 R or more. The main phase has a C14 type crystal structure.　(1): ∆Smix = -RΣxiln(xi) (In formula (1), R represents the gas constant; and plural xi represent respective molar fractions of the elements contained in the high-entropy hydrogen storage alloy.)

Inventors:

TAKEMOTO TOMOYUKI (JP)
FUKAGAWA TOSHIAKI (JP)
SAITOU YASUYUKI (JP)
MATSUYAMA AKIHIRO (JP)

Application Number:

PCT/JP2022/021445

Publication Date:

December 01, 2022

Filing Date:

May 25, 2022

Export Citation:

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Assignee:

AICHI STEEL CORP (JP)

International Classes:

H01M4/38; B22F1/00; B22F1/14; C22C30/00; C22F1/00; C22F1/16; H01M4/24; H01M4/62

Foreign References:

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JPH06187983A	1994-07-08
JP2002246016A	2002-08-30
JP2002334695A	2002-11-22
JPS5468702A	1979-06-02
US4849205A	1989-07-18
JPH05263171A	1993-10-12
JP2017050223A	2017-03-09
JP2017168362A	2017-09-21