Efficient nanocatalysis of Ni/Sc_(2)O_(3)@FLG for magnesium hydrolysis of hydrogen generation

作     者：Haixiang Huang Tingting Xu Jinting Chen Yang Zhao ujie Lv Bogu Liu Bao Zhang Jianguang Yuan Ying Wu 

作者机构：School of EnergyPower and Mechanical EngineeringNorth China Electric Power UniversityBeijing 102206China Institute of Energy Power InnovationNorth China Electric Power UniversityBeijing 102206China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2024年第175卷第8期

页      面：235-243页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Key R&D Program of China(No.2022YFB3803700) the National Natural Science Foun-dation of China(Grant Nos.52071141,52271212,52201250,and 51771056) Interdisciplinary Innovation Program of North China Electric Power University(No.XM2112355) the Double-First Class project for the NCEPU 

主　　题：Mg-based materials Hydrolysis Catalyst Hydrogen generation 

摘      要：Magnesium is one of the most promising candidates of light metal materials for hydrogen production by hydrolysis due to its efficient and economical *** modification methods have been investigated to improve the hydrolytic properties of ***,the direction of the design of efficient catalysts is unclear and needs to be guided by a richer catalytic mechanism of *** this work,a simple approach was used to synthesize Few Layer Graphene(FLG)-loaded ultra-fine highly dispersed Ni/Sc_(2)O_(3)nanocatalyst,which achieves impressive catalytic hydrolysis ***,the addition of 4 wt%Ni/Sc_(2)O_(3)@FLG catalyst allows Mg to produce 833 mL g^(-1)of H_(2) in 20 s at 30℃.There is an initial hydrogen release rate as high as 5942 mL g^(-1)min^(-1),a final hydrogen yield of 859 mL g^(-1)(99.13%),and almost complete conversion of Mg to Mg(OH)_(2).Furthermore,surprisingly,even with only 0.2 wt%catalysts added,Mg still has an initial hydrogen generation rate of 3627 mL g^(-1)min^(-1),which is over 20 times faster than that of *** also produces 690 mL g^(-1)of H_(2) in 30 s at 30℃.Hydrolysis kinetic curves and microscopic morphology tests show that FLG could shape and hold Mg into thin sheets,giving them an ultra-high hydrolysis rate and conversion *** formation of micro-galvanic cells between Ni and Mg accelerates the electrochemical corrosion of Mg and greatly enhances electron transfer during *** work provides a new strategy for the preparation of efficient nanocatalysts,which is expected to make“Mg-efficient catalystthe most ideal light metal-based material for hydrogen production by hydrolysis.