Efficient catalysis of FeNiCu-based multi-site alloys on magnesium-hydride for solid-state hydrogen storage

脱氢 氢气储存 催化作用 氢化镁 氢化物 成核 化学 活化能 解吸 合金 无机化学 氢燃料 化学工程 材料科学 吸附 物理化学 有机化学 工程类
作者
Shuai Li,Liuting Zhang,Fuying Wu,Yiqun Jiang,Xuebin Yu
出处
期刊:Chinese Chemical Letters [Elsevier BV]
卷期号:36 (1): 109566-109566 被引量:7
标识
DOI:10.1016/j.cclet.2024.109566
摘要

Hydrogen, as a cheap, clean, and cost-effective secondary energy source, performs an essential role in optimizing today's energy structure. Magnesium hydride (MgH2) represents an attractive hydrogen carrier for storage and transportation, however, the kinetic behavior and operating temperature remain undesirable. In this work, a dual-phase multi-site alloy (MsA) anchored on carbon substrates was designed, and its superior catalytic effects on the hydrogen storage properties of MgH2 were reported. Mechanism analysis identified that multi-site FeNi3/NiCu nanoalloys synergistically served as intrinsic drivers for the striking de/hydrogenation performance of the MgH2-MsA systems. Concretely, the unique multi-metallic site structure attached to the surface of MgH2 provided substantial reversible channels and accessible active sites conducive to the adsorption, activation, and nucleation of H atoms. In addition, the coupling system formed by FeNi3 and NiCu dual-phase alloys further enhanced the reactivity between Mg/MgH2 and H atoms. Hence, the onset dehydrogenation temperature of MgH2 + 5 wt% MsA was reduced to 195°C and the hydrogen desorption apparent activation energy was reduced to 83.6 kJ/mol. 5.08 wt% H2 could be released at 250°C in 20 min, reaching a high dehydrogenation rate of 0.254 wt% H2/min, yet that for MgH2 at a higher temperature of 335°C was only 0.145 wt% H2/min. Then, the dehydrogenated MgH2-MsA sample could absorb hydrogen from room temperature (30°C) and charge 3.93 wt% H2 at 100°C within 20 min under 3.0 MPa H2 pressure. Benefiting from carbon substrates, the 5 wt% MsA doped-MgH2 could still maintain 6.36 wt% hydrogen capacity after 20 cycles. In conclusion, this work provides experimental rationale and new insights for the design of efficient catalysts for magnesium-based solid-state hydrogen storage materials.
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
科研通AI5应助蒋念寒采纳,获得10
刚刚
月亮褪色了完成签到 ,获得积分20
4秒前
萱棚完成签到 ,获得积分10
4秒前
5秒前
Cao完成签到 ,获得积分10
5秒前
ENG完成签到,获得积分10
7秒前
alick完成签到,获得积分10
9秒前
刘刘完成签到,获得积分10
10秒前
Tom完成签到,获得积分10
11秒前
Villanellel发布了新的文献求助10
12秒前
程艳完成签到 ,获得积分10
13秒前
MINGHUI完成签到,获得积分10
14秒前
14秒前
子车半烟完成签到,获得积分10
14秒前
16秒前
淳于安筠完成签到,获得积分10
16秒前
雨晴完成签到,获得积分10
19秒前
jbq发布了新的文献求助10
19秒前
joshar完成签到,获得积分10
19秒前
20秒前
量子星尘发布了新的文献求助10
22秒前
blueblue完成签到,获得积分10
24秒前
落后秋烟完成签到,获得积分10
26秒前
大橙子发布了新的文献求助10
27秒前
LMY完成签到 ,获得积分10
27秒前
Betty完成签到 ,获得积分10
27秒前
NexusExplorer应助jbq采纳,获得10
28秒前
渔渔完成签到 ,获得积分10
28秒前
29秒前
Tangyartie完成签到 ,获得积分10
29秒前
skbkbe完成签到 ,获得积分10
30秒前
陈俊雷完成签到 ,获得积分0
31秒前
阿苗完成签到,获得积分10
32秒前
神勇的天问完成签到 ,获得积分10
33秒前
33秒前
advance完成签到,获得积分10
33秒前
李cc发布了新的文献求助10
34秒前
蒋念寒发布了新的文献求助10
35秒前
Sindy完成签到,获得积分10
35秒前
彭于晏应助HH采纳,获得30
37秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
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 4038184
求助须知:如何正确求助?哪些是违规求助? 3575908
关于积分的说明 11373872
捐赠科研通 3305715
什么是DOI,文献DOI怎么找? 1819255
邀请新用户注册赠送积分活动 892662
科研通“疑难数据库(出版商)”最低求助积分说明 815022