Ti1.4V0.6Ni quasicrystal and its composites with xV18Ti15Zr18Ni29Cr5Co7Mn alloy used as negative electrode materials for the nickel-metal hydride (Ni-MH) secondary batteries

被引：9

作者：

Liu, Wanqiang ^{[1
,2
]}

Zhang, ShanShan ^{[2
]}

Wang, Limin ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China

[2] Changchun Univ Sci & Technol, Sch Mat Sci & Engn, Changchun 130022, Peoples R China

来源：

MATERIALS LETTERS | 2012年 / 79卷

基金：

国家高技术研究发展计划(863计划);

关键词：

Metals and alloys; Composite materials; Microstructure; Electrochemical hydrogen storage; HYDROGEN-STORAGE; DIFFRACTION;

D O I：

10.1016/j.matlet.2012.04.040

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study examined the structure and electrochemical hydrogen storage characteristics of the Ti1.4V0.6Ni quasicrystal and their ball-milled composites with V18Ti15Zr18Ni29Cr5Co7 alloy. It is found by XRD that composite material alloys consist of the icosahedral quasicrystal (I-phase), C14 Laves phase with a hexagonal structure and a V-based solid solution phase with a BCC structure and a face centered cubic (FCC) phase with a Ti2Ni-type structure. The maximum discharge capacity of the alloy electrodes increases with increasing V18Ti15Zr18Ni29Cr5Co7 in the Ti1.4V0.6Ni alloy when using such composite materials as Ni-MH battery anodes under the condition that the discharge current density is 30 mA g(-1) at 303 K. Also, composite materials lead to significant improvement in the high-rate dischargeability (HRD) as well as the cyclic stability. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：122 / 124

页数：3