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Title: Metal hydride alloys with improved rate performance

Abstract

Methods of preparing improved metal hydride alloy materials are provided. The alloys include a mixture of at least four of vanadium, titanium, nickel, chromium, and iron. The alloy is processed by at least one of thermal and physical treatment to generate a refined microstructure exhibiting improved kinetics when used as electrodes in MH batteries (e.g., higher discharge current). The thermal treatment includes rapid cooling of the alloy at greater than 10.sup.4 K/s. The physical treatment includes mechanical pulverization of the alloy after cooling. The microstructure is a single phase (body centered cubic) with a heterogeneous composition including a plurality of primary regions having a lattice parameter selected from the range of 3.02 .ANG. to 3.22 .ANG. and a plurality of secondary regions having a lattice parameter selected from the range of 3.00 .ANG. to 3.22 .ANG. and at least one physical dimension having a maximum average value less than 1 .mu.m.

Inventors:
; ; ;
Issue Date:
Research Org.:
California Institute of Technology (CalTech), Pasadena, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1502950
Patent Number(s):
10,211,457
Application Number:
15/046,104
Assignee:
California Institute of Technology (Pasadena, CA)
DOE Contract Number:  
SC0001057
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Feb 17
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Weadock, Nicholas J., Tan, Hongjin, Fultz, Brent T., and Yang, Heng. Metal hydride alloys with improved rate performance. United States: N. p., 2019. Web.
Weadock, Nicholas J., Tan, Hongjin, Fultz, Brent T., & Yang, Heng. Metal hydride alloys with improved rate performance. United States.
Weadock, Nicholas J., Tan, Hongjin, Fultz, Brent T., and Yang, Heng. Tue . "Metal hydride alloys with improved rate performance". United States. https://www.osti.gov/servlets/purl/1502950.
@article{osti_1502950,
title = {Metal hydride alloys with improved rate performance},
author = {Weadock, Nicholas J. and Tan, Hongjin and Fultz, Brent T. and Yang, Heng},
abstractNote = {Methods of preparing improved metal hydride alloy materials are provided. The alloys include a mixture of at least four of vanadium, titanium, nickel, chromium, and iron. The alloy is processed by at least one of thermal and physical treatment to generate a refined microstructure exhibiting improved kinetics when used as electrodes in MH batteries (e.g., higher discharge current). The thermal treatment includes rapid cooling of the alloy at greater than 10.sup.4 K/s. The physical treatment includes mechanical pulverization of the alloy after cooling. The microstructure is a single phase (body centered cubic) with a heterogeneous composition including a plurality of primary regions having a lattice parameter selected from the range of 3.02 .ANG. to 3.22 .ANG. and a plurality of secondary regions having a lattice parameter selected from the range of 3.00 .ANG. to 3.22 .ANG. and at least one physical dimension having a maximum average value less than 1 .mu.m.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {2}
}

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Works referenced in this record:

Electrochemical and Structural Characterization of Ti-V-Ni Hydrogen Storage Alloys with BCC Structure
journal, January 2000

  • Iwakura, Chiaki; Choi, Weon-Kyung; Miyauchi, Rie
  • Journal of The Electrochemical Society, Vol. 147, Issue 7
  • DOI: 10.1149/1.1393560

The determination of kinetics parameters of the hydrogen evolution on TiNi alloys by ac impedance
journal, January 1997


A study on the cycling stability of the Ti–V-based hydrogen storage electrode alloys
journal, February 2004


The effect of rapid solidification on the microstructure and hydrogen storage properties of V35Ti25Cr40 hydrogen storage alloy
journal, October 2009


Phase structure of V-based solid solutions containing Ti and Ni and their hydrogen absorption-desorption properties
journal, June 1995

  • Tsukahara, Makoto; Takahashi, Kunio; Mishima, Takahiro
  • Journal of Alloys and Compounds, Vol. 224, Issue 1
  • DOI: 10.1016/0925-8388(95)01533-7

Vanadium-based solid solution alloys with three-dimensional network structure for high capacity metal hydride electrodes
journal, May 1997


Microstructure and hydrogenation behavior of ball-milled and melt-spun Mg–10Ni–2Mm alloys
journal, October 2008


The Current Status of Hydrogen Storage Alloy Development for Electrochemical Applications
journal, October 2013


Effects of rapid solidification on the phase structures and electrochemical properties of a V3TiNi0.56Co0.14Nb0.047Ta0.047 alloy
journal, May 2004


Effect of rapid solidification on the structural and electrochemical properties of the Ti–V-based hydrogen storage electrode alloy
journal, September 2008


Hydrogenation properties of Fe–Ti–V bcc alloys
journal, January 2011


High capacity hydrogen storage alloy negative electrodes for use in nickel–metal hydride batteries
journal, October 2015