Properties of co-free LaNi4.1Al0.3Mn0.4 Si0.2Fex (x=0~0.4) hydrogen storage alloys

Xiaobo Ma; Yifang Wu; Yongning Liu; Yuanzhen Chen; Chengshan Li

Properties of co-free LaNi_4.1Al_0.3Mn_0.4 Si_0.2Fe_x (x=0~0.4) hydrogen storage alloys

Xiaobo Ma
, Yifang Wu
, Yongning Liu
, Yuanzhen Chen
, Chengshan Li

School of Materials Science and Engineering

Northwest Institute for Nonferrous Metal Research
Xi'an Jiaotong University

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

Abstract

LaNi_4.1Al_0.3Mn_0.4 Si_0.2Fe_x (x=0~0.4) hydrogen storage alloys were prepared by inductive melting. The crystal structure and phase composition of alloys were determined by XRD and SEM, and the electrochemical properties were also investigated. The results show that the alloys are composed of LaNi₅ as main phase. When x≥0.1, some grey secondary phases are distributed on the main LaNi₅ phase. With the increase of Fe content, the maximum discharge capacity decreases from 295.4 mAh/g (x=0) to 278.2 mAh/g (x=0.4), and the activity times increase from 10 to 18. Meanwhile the capacity retention rate increases from 66.85% (x=0) to 93.33% (x=0.4) after the charge/discharge cycle of 200 times.

Original language	English
Pages (from-to)	1287-1290
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	42
Issue number	6
State	Published - Jun 2013

Keywords

Cycling stability
Discharge capacity
Hydrogen storage alloys

Cite this

@article{0bb4ae8bf2a04e89a10f55dbd5f96274,

title = "Properties of co-free LaNi4.1Al0.3Mn0.4 Si0.2Fex (x=0\textasciitilde{}0.4) hydrogen storage alloys",

abstract = "LaNi4.1Al0.3Mn0.4 Si0.2Fex (x=0\textasciitilde{}0.4) hydrogen storage alloys were prepared by inductive melting. The crystal structure and phase composition of alloys were determined by XRD and SEM, and the electrochemical properties were also investigated. The results show that the alloys are composed of LaNi5 as main phase. When x≥0.1, some grey secondary phases are distributed on the main LaNi5 phase. With the increase of Fe content, the maximum discharge capacity decreases from 295.4 mAh/g (x=0) to 278.2 mAh/g (x=0.4), and the activity times increase from 10 to 18. Meanwhile the capacity retention rate increases from 66.85\% (x=0) to 93.33\% (x=0.4) after the charge/discharge cycle of 200 times.",

keywords = "Cycling stability, Discharge capacity, Hydrogen storage alloys",

author = "Xiaobo Ma and Yifang Wu and Yongning Liu and Yuanzhen Chen and Chengshan Li",

year = "2013",

month = jun,

language = "英语",

volume = "42",

pages = "1287--1290",

journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

issn = "1002-185X",

publisher = "Science Press ",

number = "6",

}

TY - JOUR

T1 - Properties of co-free LaNi4.1Al0.3Mn0.4 Si0.2Fex (x=0~0.4) hydrogen storage alloys

AU - Ma, Xiaobo

AU - Wu, Yifang

AU - Liu, Yongning

AU - Chen, Yuanzhen

AU - Li, Chengshan

PY - 2013/6

Y1 - 2013/6

N2 - LaNi4.1Al0.3Mn0.4 Si0.2Fex (x=0~0.4) hydrogen storage alloys were prepared by inductive melting. The crystal structure and phase composition of alloys were determined by XRD and SEM, and the electrochemical properties were also investigated. The results show that the alloys are composed of LaNi5 as main phase. When x≥0.1, some grey secondary phases are distributed on the main LaNi5 phase. With the increase of Fe content, the maximum discharge capacity decreases from 295.4 mAh/g (x=0) to 278.2 mAh/g (x=0.4), and the activity times increase from 10 to 18. Meanwhile the capacity retention rate increases from 66.85% (x=0) to 93.33% (x=0.4) after the charge/discharge cycle of 200 times.

AB - LaNi4.1Al0.3Mn0.4 Si0.2Fex (x=0~0.4) hydrogen storage alloys were prepared by inductive melting. The crystal structure and phase composition of alloys were determined by XRD and SEM, and the electrochemical properties were also investigated. The results show that the alloys are composed of LaNi5 as main phase. When x≥0.1, some grey secondary phases are distributed on the main LaNi5 phase. With the increase of Fe content, the maximum discharge capacity decreases from 295.4 mAh/g (x=0) to 278.2 mAh/g (x=0.4), and the activity times increase from 10 to 18. Meanwhile the capacity retention rate increases from 66.85% (x=0) to 93.33% (x=0.4) after the charge/discharge cycle of 200 times.

KW - Cycling stability

KW - Discharge capacity

KW - Hydrogen storage alloys

UR - https://www.scopus.com/pages/publications/84880001239

M3 - 文章

AN - SCOPUS:84880001239

SN - 1002-185X

VL - 42

SP - 1287

EP - 1290

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 6

ER -

Properties of co-free LaNi_4.1Al_0.3Mn_0.4 Si_0.2Fe_x (x=0~0.4) hydrogen storage alloys

Abstract

Keywords

Other files and links

Fingerprint

Cite this