Study on the evolution of phase and properties for ternary La-Y-Ni-based hydrogen storage alloys with different stoichiometric ratios

氢气储存 合金 交换电流密度 材料科学 三元运算 相(物质) 烧结 扩散 化学计量学 冶金 化学工程 电化学 分析化学(期刊) 热力学 化学 物理化学 电极 程序设计语言 物理 有机化学 塔菲尔方程 工程类 色谱法 计算机科学
作者
Xiangyang He,Wei Xiong,Li Wang,Baoquan Li,Jin Li,Shujuan Zhou,Jia-Xuan Li,Huizhong Yan
出处
期刊:Journal of Alloys and Compounds [Elsevier BV]
卷期号:921: 166064-166064 被引量:19
标识
DOI:10.1016/j.jallcom.2022.166064
摘要

In recent years, some progress has been made in the development and application of the highly anticipated La-Y-Ni hydrogen storage alloy system. However, the relationship between the structure and properties of materials has not been studied systematically and thoroughly. In this paper, the evolution law of AB3-, A2B7- and A5B19-type phases for La-Y-Ni-based hydrogen storage alloys was proposed. The single-phase LaY2Ni9 (AB3), La2Y4Ni21 (A2B7) and La5Y10Ni57 (A5B19) alloys were synthesized by powder sintering method at 1173, 1353 and 1423 K, respectively. The XRD and SEM results of the alloys show that LaY2Ni9 alloy has a single PuNi3 phase (3 R), La2Y4Ni21 alloy is composed of Ce2Ni7 phase (2 H) and Gd2CO7 phase (3 R), and La5Y10Ni57 alloy contains Pr5Co19 phase (2 H) and Ce5Co19 phase (3 R). Among the three alloys, the La2Y4Ni21 alloy has the largest hydrogen storage capacity (1.59 wt%) in solid /H2 reaction at 313 K. The target alloys all exhibit excellent electrochemical activation ability. The maximum discharge capacity of LaY2Ni9, La2Y4Ni21 and La5Y10Ni57 alloys decreases gradually, but their cycle stability increases in turn. The high-rate discharge performance of La2Y4Ni21 alloy is the best, because its exchange current density (I0 = 75.55 mA/g) and hydrogen diffusion coefficient (D0 = 2.51 ×10−10 cm2/s) cooperate well. It is hoped that these findings can offer theoretical guidance and technical assistance for the development of La-Y-Ni-based hydrogen storage alloys.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
锦鲤完成签到 ,获得积分10
1秒前
3秒前
任性的乐天完成签到,获得积分10
4秒前
6秒前
Stanley发布了新的文献求助10
8秒前
李爱国应助虚心月饼采纳,获得10
8秒前
8秒前
9秒前
13771590815发布了新的文献求助10
11秒前
橙色小人完成签到,获得积分10
12秒前
14秒前
苗条梦玉发布了新的文献求助10
14秒前
luoshikun发布了新的文献求助10
16秒前
bkagyin应助MQRR采纳,获得30
16秒前
17秒前
西西完成签到,获得积分20
19秒前
Stanley完成签到,获得积分20
20秒前
今后应助苗条梦玉采纳,获得10
20秒前
量子星尘发布了新的文献求助10
20秒前
zzlark完成签到,获得积分10
21秒前
爱吃冬瓜发布了新的文献求助20
22秒前
Awalong完成签到,获得积分10
25秒前
26秒前
ymj完成签到,获得积分10
32秒前
34秒前
wulalala完成签到,获得积分20
34秒前
34秒前
35秒前
sssyq完成签到,获得积分20
36秒前
彭于晏应助luoshikun采纳,获得10
37秒前
领导范儿应助啦啦啦采纳,获得10
38秒前
katarinabluu完成签到,获得积分10
39秒前
彭于晏应助leanne采纳,获得10
39秒前
我是老大应助明道若昧采纳,获得10
39秒前
sssyq发布了新的文献求助10
39秒前
着急的觅海完成签到,获得积分10
39秒前
40秒前
ylky发布了新的文献求助10
45秒前
科研通AI2S应助浮浮世世采纳,获得10
45秒前
传奇3应助华中科技大学采纳,获得10
45秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989378
求助须知:如何正确求助?哪些是违规求助? 3531442
关于积分的说明 11254002
捐赠科研通 3270126
什么是DOI,文献DOI怎么找? 1804887
邀请新用户注册赠送积分活动 882087
科研通“疑难数据库(出版商)”最低求助积分说明 809173