Hydriding and dehydriding rates and hydrogen-storage capacity of Mg�??14Ni�??3Fe2O3�??3Ti prepared by reactive mechanical grinding

Bulletin of materials science

Byoung-Goan Kim²  Myoung Youp Song³  Young Jun Kwak¹  Hye Ryoung Park⁴ 

[1]Department of Materials Engineering, Graduate School, Chonbuk National University, 664-14 Deokjin-Dong 1Ga Deokjin-Gu Jeonju Jeonbuk, 561-756, South Korea$$Department of Materials Engineering, Graduate School, Chonbuk National University, 664-14 Deokjin-Dong 1Ga Deokjin-Gu Jeonju Jeonbuk, 561-756, South KoreaDepartment of Materials Engineering, Graduate School, Chonbuk National University, 664-14 Deokjin-Dong 1Ga Deokjin-Gu Jeonju Jeonbuk, 561-756, South Korea$$

[2]Korea Energy Materials Limited, 409 Daegu Technopark, 1-11 Hosan-Dong Dalse-Gu Daegu, 704-230, South Korea$$Korea Energy Materials Limited, 409 Daegu Technopark, 1-11 Hosan-Dong Dalse-Gu Daegu, 704-230, South KoreaKorea Energy Materials Limited, 409 Daegu Technopark, 1-11 Hosan-Dong Dalse-Gu Daegu, 704-230, South Korea$$

[3]Division of Advanced Materials Engineering, Hydrogen & Fuel Cell Research Center, Engineering Research Institute, Chonbuk National University, 664-14 Deokjin-Dong 1Ga Deokjin-Gu Jeonju Jeonbuk, 561-756, South Korea$$Division of Advanced Materials Engineering, Hydrogen & Fuel Cell Research Center, Engineering Research Institute, Chonbuk National University, 664-14 Deokjin-Dong 1Ga Deokjin-Gu Jeonju Jeonbuk, 561-756, South KoreaDivision of Advanced Materials Engineering, Hydrogen & Fuel Cell Research Center, Engineering Research Institute, Chonbuk National University, 664-14 Deokjin-Dong 1Ga Deokjin-Gu Jeonju Jeonbuk, 561-756, South Korea$$

[4]School of Applied Chemical Engineering, Chonnam National University, 300 Yongbong-Dong Buk-Gu Gwangju, 500-757, South Korea$$School of Applied Chemical Engineering, Chonnam National University, 300 Yongbong-Dong Buk-Gu Gwangju, 500-757, South KoreaSchool of Applied Chemical Engineering, Chonnam National University, 300 Yongbong-Dong Buk-Gu Gwangju, 500-757, South Korea$$

关键词: Hydrogen absorbing materials;    magnesium;    reactive mechanical grinding;    scanning electron microscopy;    X-ray diffraction.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The magnesium prepared by mechanical grinding under H₂ (reactive mechanical grinding) with transition elements or oxides showed relatively high hydriding and dehydriding rates when the content of additives was about 20 wt%. Ni (expected to increase hydriding and dehydriding rates) was chosen as transition element to be added. Fe₂O₃ (expected to increase hydriding rate) was selected as an oxide to be added. Ti was also selected since, it was considered to increase the hydriding and dehydriding rates by forming Ti hydride. A sample, Mgâ€�??14Niâ€�??3Fe₂O₃â€�??3Ti, was prepared by reactive mechanical grinding and its hydrogen storage properties were investigated. This sample absorbed 4.02 wt% H for 5 min, 4.15 wt% H for 10 min and 4.42 wt% H for 60 min at ð‘�?? = 2. It desorbed 2.46 wt% H for 10 min, 3.98 wt% H for 30 min and 4.20 wt% H for 60 min at ð‘�?? = 2.

【 授权许可】

Unknown