Effect of Cr addition on room temperature hydrogenation of TiFe alloys

Jee Yun Jung; Sang In Lee; Mohammad Faisal; Hayoung Kim; Young Su Lee; Jin Yoo Suh; Jae Hyeok Shim; Joo Youl Huh; Young Whan Cho

doi:10.1016/j.ijhydene.2021.03.096

Effect of Cr addition on room temperature hydrogenation of TiFe alloys

Jee Yun Jung, Sang In Lee, Mohammad Faisal, Hayoung Kim, Young Su Lee, Jin Yoo Suh, Jae Hyeok Shim, Joo Youl Huh, Young Whan Cho

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

This paper discusses the effect of AB₂ (Ti(Cr, Fe)₂) phase on the hydrogenation properties of a Ti–Fe–Cr alloy system. Five Ti–Fe–Cr based alloys were fabricated by varying the Cr content. The microstructural analysis results revealed that the fraction of the Ti(Cr, Fe)₂ phase increased with the increasing Cr content. The first hydrogenation test results indicated that all the alloys could absorb a significant amount of hydrogen at room temperature (30 °C) without a separate activation process. This behavior improved when the Ti(Cr, Fe)₂ phase existed in the AB phase; the kinetics of the first hydrogenation tended to increase with the fraction of Ti(Cr, Fe)₂ phase. The enhancement in the first hydrogenation kinetics of the Ti–Fe–Cr based alloys was attributed to the synergetic effect of the interface between the AB and Ti(Cr, Fe)₂ phases and the inherent fast hydrogenation of the Ti(Cr, Fe)₂ phase. However, the total hydrogen storage capacity decreased when the fraction of Ti(Cr, Fe)₂ phase increased.

Original language	English
Pages (from-to)	19478-19485
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	46
Issue number	37
DOIs	https://doi.org/10.1016/j.ijhydene.2021.03.096
Publication status	Published - 2021 May 28

Keywords

Activation
Hydrogen storage alloy
Pressure–composition isotherm
TiFe alloy

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

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

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10.1016/j.ijhydene.2021.03.096

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Effect of Cr addition on room temperature hydrogenation of TiFe alloys. / Jung, Jee Yun; Lee, Sang In; Faisal, Mohammad; Kim, Hayoung; Lee, Young Su; Suh, Jin Yoo; Shim, Jae Hyeok; Huh, Joo Youl; Cho, Young Whan.

In: International Journal of Hydrogen Energy, Vol. 46, No. 37, 28.05.2021, p. 19478-19485.

Research output: Contribution to journal › Article › peer-review

@article{51f602aecc9740e2b0bb9161172396aa,

title = "Effect of Cr addition on room temperature hydrogenation of TiFe alloys",

abstract = "This paper discusses the effect of AB2 (Ti(Cr, Fe)2) phase on the hydrogenation properties of a Ti–Fe–Cr alloy system. Five Ti–Fe–Cr based alloys were fabricated by varying the Cr content. The microstructural analysis results revealed that the fraction of the Ti(Cr, Fe)2 phase increased with the increasing Cr content. The first hydrogenation test results indicated that all the alloys could absorb a significant amount of hydrogen at room temperature (30 °C) without a separate activation process. This behavior improved when the Ti(Cr, Fe)2 phase existed in the AB phase; the kinetics of the first hydrogenation tended to increase with the fraction of Ti(Cr, Fe)2 phase. The enhancement in the first hydrogenation kinetics of the Ti–Fe–Cr based alloys was attributed to the synergetic effect of the interface between the AB and Ti(Cr, Fe)2 phases and the inherent fast hydrogenation of the Ti(Cr, Fe)2 phase. However, the total hydrogen storage capacity decreased when the fraction of Ti(Cr, Fe)2 phase increased.",

keywords = "Activation, Hydrogen storage alloy, Pressure–composition isotherm, TiFe alloy",

author = "Jung, {Jee Yun} and Lee, {Sang In} and Mohammad Faisal and Hayoung Kim and Lee, {Young Su} and Suh, {Jin Yoo} and Shim, {Jae Hyeok} and Huh, {Joo Youl} and Cho, {Young Whan}",

note = "Funding Information: This study was supported by the Korea Institute of Science and Technology (KIST) Flagship Program (Grant number: 2E30201 ) and the “Technology Development Program to Solve Climate Changes” of the National Research Foundation (NRF) funded by the Ministry of Science , ICT & Future Planning (Grant number: 2020M1A2A2080881 ). Publisher Copyright: {\textcopyright} 2021 Hydrogen Energy Publications LLC",

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doi = "10.1016/j.ijhydene.2021.03.096",

language = "English",

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T1 - Effect of Cr addition on room temperature hydrogenation of TiFe alloys

AU - Jung, Jee Yun

AU - Lee, Sang In

AU - Faisal, Mohammad

AU - Kim, Hayoung

AU - Lee, Young Su

AU - Suh, Jin Yoo

AU - Shim, Jae Hyeok

AU - Huh, Joo Youl

AU - Cho, Young Whan

N1 - Funding Information: This study was supported by the Korea Institute of Science and Technology (KIST) Flagship Program (Grant number: 2E30201 ) and the “Technology Development Program to Solve Climate Changes” of the National Research Foundation (NRF) funded by the Ministry of Science , ICT & Future Planning (Grant number: 2020M1A2A2080881 ). Publisher Copyright: © 2021 Hydrogen Energy Publications LLC

PY - 2021/5/28

Y1 - 2021/5/28

N2 - This paper discusses the effect of AB2 (Ti(Cr, Fe)2) phase on the hydrogenation properties of a Ti–Fe–Cr alloy system. Five Ti–Fe–Cr based alloys were fabricated by varying the Cr content. The microstructural analysis results revealed that the fraction of the Ti(Cr, Fe)2 phase increased with the increasing Cr content. The first hydrogenation test results indicated that all the alloys could absorb a significant amount of hydrogen at room temperature (30 °C) without a separate activation process. This behavior improved when the Ti(Cr, Fe)2 phase existed in the AB phase; the kinetics of the first hydrogenation tended to increase with the fraction of Ti(Cr, Fe)2 phase. The enhancement in the first hydrogenation kinetics of the Ti–Fe–Cr based alloys was attributed to the synergetic effect of the interface between the AB and Ti(Cr, Fe)2 phases and the inherent fast hydrogenation of the Ti(Cr, Fe)2 phase. However, the total hydrogen storage capacity decreased when the fraction of Ti(Cr, Fe)2 phase increased.

AB - This paper discusses the effect of AB2 (Ti(Cr, Fe)2) phase on the hydrogenation properties of a Ti–Fe–Cr alloy system. Five Ti–Fe–Cr based alloys were fabricated by varying the Cr content. The microstructural analysis results revealed that the fraction of the Ti(Cr, Fe)2 phase increased with the increasing Cr content. The first hydrogenation test results indicated that all the alloys could absorb a significant amount of hydrogen at room temperature (30 °C) without a separate activation process. This behavior improved when the Ti(Cr, Fe)2 phase existed in the AB phase; the kinetics of the first hydrogenation tended to increase with the fraction of Ti(Cr, Fe)2 phase. The enhancement in the first hydrogenation kinetics of the Ti–Fe–Cr based alloys was attributed to the synergetic effect of the interface between the AB and Ti(Cr, Fe)2 phases and the inherent fast hydrogenation of the Ti(Cr, Fe)2 phase. However, the total hydrogen storage capacity decreased when the fraction of Ti(Cr, Fe)2 phase increased.

KW - Activation

KW - Hydrogen storage alloy

KW - Pressure–composition isotherm

KW - TiFe alloy

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EP - 19485

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 37

ER -

Effect of Cr addition on room temperature hydrogenation of TiFe alloys

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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