Property changes of some hydrogen storage alloys upon hydrogen absorption-desorption cycling

Choong N. Park; Sung W. Cho; Jeon Choi

doi:10.4028/0-87849-960-1.2509

Property changes of some hydrogen storage alloys upon hydrogen absorption-desorption cycling

Choong N. Park^*
, Sung W. Cho
, Jeon Choi

^*Corresponding author for this work

Geography Education

Chonnam National University
Korea Institute of Geoscience and Mineral Resources
Hanlyo Sanup University

Research output: Contribution to journal › Conference article › peer-review

Abstract

Hydrogen absorption-desorption cycling induced by pressure change in a closed system were carried out with LaNi₅, La_0.7Ce _0.3Ni₄Cu and TiFe_0.9Ni_0.1 alloys. PC isotherms measured during the cycling showed some changes in hydrogen storage capacity, plateau pressure and hysteresis of the alloys. The half capacity life of LaNi₅ alloy can be projected as 70,000 cycles for room temperature pressure cycling. When La_0.7Ce_0.3Ni₄Cu alloy was pressure cycled both of the plateau pressures were decreased significantly and continuously. TiFe_0.9Ni_0.1 alloy showed a good resistance to cyclic degradation. Heat treatments of the degraded alloys under 1 atm of hydrogen gas recovered most of the hydrogen storage properties to the initial level even though they were degraded again more rapidly upon subsequent cycling.

Original language	English
Pages (from-to)	2509-2512
Number of pages	4
Journal	Materials Science Forum
Volume	475-479
Issue number	III
DOIs	https://doi.org/10.4028/0-87849-960-1.2509
State	Published - 2005
Event	PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China Duration: 2004.11.2 → 2004.11.5

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Cycle
Cycle life
Hydrogen storage alloy
LaCeNiCu
LaNi
Pressure cycling
Recovery
TiFeNi

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10.4028/0-87849-960-1.2509

Cite this

@article{442e3828922e4031b200e3dda87458fc,

title = "Property changes of some hydrogen storage alloys upon hydrogen absorption-desorption cycling",

abstract = "Hydrogen absorption-desorption cycling induced by pressure change in a closed system were carried out with LaNi5, La0.7Ce 0.3Ni4Cu and TiFe0.9Ni0.1 alloys. PC isotherms measured during the cycling showed some changes in hydrogen storage capacity, plateau pressure and hysteresis of the alloys. The half capacity life of LaNi5 alloy can be projected as 70,000 cycles for room temperature pressure cycling. When La0.7Ce0.3Ni4Cu alloy was pressure cycled both of the plateau pressures were decreased significantly and continuously. TiFe0.9Ni0.1 alloy showed a good resistance to cyclic degradation. Heat treatments of the degraded alloys under 1 atm of hydrogen gas recovered most of the hydrogen storage properties to the initial level even though they were degraded again more rapidly upon subsequent cycling.",

keywords = "Cycle, Cycle life, Hydrogen storage alloy, LaCeNiCu, LaNi, Pressure cycling, Recovery, TiFeNi",

author = "Park, \{Choong N.\} and Cho, \{Sung W.\} and Jeon Choi",

year = "2005",

doi = "10.4028/0-87849-960-1.2509",

language = "English",

volume = "475-479",

pages = "2509--2512",

journal = "Materials Science Forum",

issn = "0255-5476",

number = "III",

note = "PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing ; Conference date: 02-11-2004 Through 05-11-2004",

}

TY - JOUR

T1 - Property changes of some hydrogen storage alloys upon hydrogen absorption-desorption cycling

AU - Park, Choong N.

AU - Cho, Sung W.

AU - Choi, Jeon

PY - 2005

Y1 - 2005

N2 - Hydrogen absorption-desorption cycling induced by pressure change in a closed system were carried out with LaNi5, La0.7Ce 0.3Ni4Cu and TiFe0.9Ni0.1 alloys. PC isotherms measured during the cycling showed some changes in hydrogen storage capacity, plateau pressure and hysteresis of the alloys. The half capacity life of LaNi5 alloy can be projected as 70,000 cycles for room temperature pressure cycling. When La0.7Ce0.3Ni4Cu alloy was pressure cycled both of the plateau pressures were decreased significantly and continuously. TiFe0.9Ni0.1 alloy showed a good resistance to cyclic degradation. Heat treatments of the degraded alloys under 1 atm of hydrogen gas recovered most of the hydrogen storage properties to the initial level even though they were degraded again more rapidly upon subsequent cycling.

AB - Hydrogen absorption-desorption cycling induced by pressure change in a closed system were carried out with LaNi5, La0.7Ce 0.3Ni4Cu and TiFe0.9Ni0.1 alloys. PC isotherms measured during the cycling showed some changes in hydrogen storage capacity, plateau pressure and hysteresis of the alloys. The half capacity life of LaNi5 alloy can be projected as 70,000 cycles for room temperature pressure cycling. When La0.7Ce0.3Ni4Cu alloy was pressure cycled both of the plateau pressures were decreased significantly and continuously. TiFe0.9Ni0.1 alloy showed a good resistance to cyclic degradation. Heat treatments of the degraded alloys under 1 atm of hydrogen gas recovered most of the hydrogen storage properties to the initial level even though they were degraded again more rapidly upon subsequent cycling.

KW - Cycle

KW - Cycle life

KW - Hydrogen storage alloy

KW - LaCeNiCu

KW - LaNi

KW - Pressure cycling

KW - Recovery

KW - TiFeNi

UR - https://www.scopus.com/pages/publications/17044415336

U2 - 10.4028/0-87849-960-1.2509

DO - 10.4028/0-87849-960-1.2509

M3 - Conference article

AN - SCOPUS:17044415336

SN - 0255-5476

VL - 475-479

SP - 2509

EP - 2512

JO - Materials Science Forum

JF - Materials Science Forum

IS - III

T2 - PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing

Y2 - 2 November 2004 through 5 November 2004

ER -

Property changes of some hydrogen storage alloys upon hydrogen absorption-desorption cycling

Abstract

UN SDGs

Keywords

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