A study on the first hydrogenation behavior of TiFe0.9Cr0.1 hydrogen storage alloy with the laves phase

被引：12

作者：

Lee, Da Hye

Im, Hyeon-Tae ^{[1
]}

Kwon, Hong Gi ^{[1
]}

Park, Sung-Min ^{[1
]}

Kwak, Ryun Ho ^{[1
,2
]}

Park, Chang-Soo ^{[1
]}

Park, Ki Beom ^{[3
]}

Sohn, Seok Su ^{[2
]}

Park, Hyung-Ki ^{[1
]}

机构：

[1] Korea Inst Ind Technol, Funct Materials& Components R&D Grp, Kangnung 25440, South Korea

[2] Korea Univ, Dept Mat Sci & Engn, Seoul 02841, South Korea

[3] Korea Zinc Co, Res & Dev Team, Ulsan 44997, South Korea

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 56卷

基金：

新加坡国家研究基金会;

关键词：

TiFe alloy; Hydrogen storage alloy; First hydrogenation kinetics; Laves phase; Solid -gas reaction model; TIFE ALLOY; KINETICS; ZR; MICROSTRUCTURE; MN;

D O I：

10.1016/j.ijhydene.2023.12.180

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This study investigated the first hydrogenation behavior of TiFe-based hydrogen storage alloy with the laves phase. A TiFe0.9Cr0.1 alloy was prepared through vacuum arc melting, and it had a dual-phase microstructure with B2 and laves phases. The first hydrogenation kinetics was measured by applying a hydrogen pressure of 40 bar at 30 C-degrees, where the alloy absorbed hydrogen without thermal activation. The first hydrogenation kinetics was divided into three sections to understand the first hydrogenation behavior, and each section was analyzed using a solid-gas reaction model. The model's goodness of fit was evaluated by fitting each section. In the early hydrogen absorption stage, a surface-controlled mechanism (Chemisorption model) was analyzed to be the most dominant. In the second stage, where hydrogen was quickly absorbed, an interface-controlled mechanism (CV3D model) was most suitable. In the last hydrogen absorption stage, where hydrogen absorption was saturated, a diffusioncontrolled mechanism (GB3D model) was most suitable.

引用

页码：864 / 870

页数：7

共 36 条

[1] HYDRIDING CHARACTERISTICS AND CYCLIC LIFE OF FE-TI-O ALLOYS [J].