Hydrogen absorption/desorption characteristics of room temperature ZrMn2-𝑥Ni�? system (�? = 1.25-1.50)

Bulletin of materials science

S K Singh²  D Pukazhselvan²  A K Tyagi³  Vinod Kumar¹ 

[1] Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal 131 039, India$$Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal 131 039, IndiaDepartment of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal 131 039, India$$;Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal 131 039, India$$Department of Physics, Padova University, Padova, Italy$$Department of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal 131 039, IndiaDepartment of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal 131 039, India$$Department of Physics, Padova University, Padova, Italy$$Department of Physics, Padova University, Padova, ItalyDepartment of Physics, Deenbandhu Chhotu Ram University of Science and Technology, Murthal 131 039, India$$Department of Physics, Padova University, Padova, Italy$$;Solid State Chemistry Section, Babha Atomic Research Centre, Mumbai 400 085, India$$Solid State Chemistry Section, Babha Atomic Research Centre, Mumbai 400 085, IndiaSolid State Chemistry Section, Babha Atomic Research Centre, Mumbai 400 085, India$$

关键词: ZrMn2-𝑥Nið‘�? system;    metal hydrides;    hydrogen storage materials.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The present communication deals with the hydrogen storage characteristics of C15 laves phase ZrMn_{2-�?}Ni_�? system tailored within the x values of 1.25 to 1.50. Drastic variations in thermodynamics of the hydride phase is observed for any little changes of concentration x within this narrow range. The most promising room temperature hydrogen storage materials are found to be formed within the range of 1.35 to 1.45 where ∼ 2.5 to 2.9 H/F.U. can be reversibly stored under the ideal operating conditions. The heat of the reaction is found to be ∼ 17 kJ/mol, which means these are promising candidates for stationary and short range mobile applications. The phase structural features and the thermodynamic aspects of all the materials are discussed in detail.

【 授权许可】

Unknown