Structure and electrochemical hydrogen storage properties of A 2B-type Ti-Zr-Ni alloys

Xiangyu Zhao; Junfeng Zhou; Xiaodong Shen; Meng Yang; Liqun Ma

doi:10.1016/j.ijhydene.2011.12.010

Structure and electrochemical hydrogen storage properties of A ₂B-type Ti-Zr-Ni alloys

Xiangyu Zhao, Junfeng Zhou, Xiaodong Shen, Meng Yang, Liqun Ma

College of Materials Science and Engineering

Nanjing Tech University

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

37 Scopus citations

Abstract

Elemental substitution of part Ti by Zr has been carried out for Ti ₂Ni alloy to form Ti _2-xZr _xNi (x = 0, 0.2, 0.4) alloys. Mechanical milling and subsequent heat treatment have been used to prepare non-equilibrium Ti-Zr-Ni alloys. The effects of Zr addition on the structure and discharge properties of Ti ₂Ni alloy were investigated. The addition of Zr could enhance the discharge capacity of the non-equilibrium Ti ₂Ni alloy at electrolyte temperatures of 313 and 333 K. For instance, the non-equlibrium Ti _1.6Zr _0.4Ni alloy had a stable discharge capacity of about 210 mAh/g at 313 K. However, the protective surface layer formed during heat treatment was destroyed at a high electrolyte temperature of 333 K, and thus a severe capacity loss during cycling.

Original language	English
Pages (from-to)	5050-5055
Number of pages	6
Journal	International Journal of Hydrogen Energy
Volume	37
Issue number	6
DOIs	https://doi.org/10.1016/j.ijhydene.2011.12.010
State	Published - Mar 2012

Keywords

Discharge properties
Elemental substitution
Hydrogen storage
Ti-Zr-Ni

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

Access to Document

10.1016/j.ijhydene.2011.12.010

Cite this

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title = "Structure and electrochemical hydrogen storage properties of A 2B-type Ti-Zr-Ni alloys",

abstract = "Elemental substitution of part Ti by Zr has been carried out for Ti 2Ni alloy to form Ti 2-xZr xNi (x = 0, 0.2, 0.4) alloys. Mechanical milling and subsequent heat treatment have been used to prepare non-equilibrium Ti-Zr-Ni alloys. The effects of Zr addition on the structure and discharge properties of Ti 2Ni alloy were investigated. The addition of Zr could enhance the discharge capacity of the non-equilibrium Ti 2Ni alloy at electrolyte temperatures of 313 and 333 K. For instance, the non-equlibrium Ti 1.6Zr 0.4Ni alloy had a stable discharge capacity of about 210 mAh/g at 313 K. However, the protective surface layer formed during heat treatment was destroyed at a high electrolyte temperature of 333 K, and thus a severe capacity loss during cycling.",

keywords = "Discharge properties, Elemental substitution, Hydrogen storage, Ti-Zr-Ni",

author = "Xiangyu Zhao and Junfeng Zhou and Xiaodong Shen and Meng Yang and Liqun Ma",

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T1 - Structure and electrochemical hydrogen storage properties of A 2B-type Ti-Zr-Ni alloys

AU - Zhao, Xiangyu

AU - Zhou, Junfeng

AU - Shen, Xiaodong

AU - Yang, Meng

AU - Ma, Liqun

PY - 2012/3

Y1 - 2012/3

N2 - Elemental substitution of part Ti by Zr has been carried out for Ti 2Ni alloy to form Ti 2-xZr xNi (x = 0, 0.2, 0.4) alloys. Mechanical milling and subsequent heat treatment have been used to prepare non-equilibrium Ti-Zr-Ni alloys. The effects of Zr addition on the structure and discharge properties of Ti 2Ni alloy were investigated. The addition of Zr could enhance the discharge capacity of the non-equilibrium Ti 2Ni alloy at electrolyte temperatures of 313 and 333 K. For instance, the non-equlibrium Ti 1.6Zr 0.4Ni alloy had a stable discharge capacity of about 210 mAh/g at 313 K. However, the protective surface layer formed during heat treatment was destroyed at a high electrolyte temperature of 333 K, and thus a severe capacity loss during cycling.

AB - Elemental substitution of part Ti by Zr has been carried out for Ti 2Ni alloy to form Ti 2-xZr xNi (x = 0, 0.2, 0.4) alloys. Mechanical milling and subsequent heat treatment have been used to prepare non-equilibrium Ti-Zr-Ni alloys. The effects of Zr addition on the structure and discharge properties of Ti 2Ni alloy were investigated. The addition of Zr could enhance the discharge capacity of the non-equilibrium Ti 2Ni alloy at electrolyte temperatures of 313 and 333 K. For instance, the non-equlibrium Ti 1.6Zr 0.4Ni alloy had a stable discharge capacity of about 210 mAh/g at 313 K. However, the protective surface layer formed during heat treatment was destroyed at a high electrolyte temperature of 333 K, and thus a severe capacity loss during cycling.

KW - Discharge properties

KW - Elemental substitution

KW - Hydrogen storage

KW - Ti-Zr-Ni

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