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First principles investigation of Mg7XH16 (X = Ti, Zn, Pd, and Cd) ternary hydrides for hydrogen storage applications       
Yazarlar (2)
Aytaç Erkişi
Hacettepe Üniversitesi, Türkiye
Prof. Dr. Gökhan GÖKOĞLU Prof. Dr. Gökhan GÖKOĞLU
Karabük Üniversitesi, Türkiye
Devamını Göster
Özet
We present the electronic structure, energetic stability, mechanical, and electronic properties of Mg7XH16 (X = Ti, Zn, Pd, Cd) ternary hydride systems using a first principles approach in the framework of density functional theory. The possible usage of these systems in hydrogen storage applications is discussed. The systems under investigation have lower formation enthalpy than conventional MgH2 material indicating lower thermodynamic stability and improved hydrogen releasing capacity. All the systems are mechanically stable and compressible materials with relatively low elastic moduli values. In the electronic aspect, Mg7XH16 (X = Ti, Zn, Cd) systems are metal, but Mg7PdH16 is a zero-gap semiconductor with bands nearly touching at Fermi level (EF) and zero density of state at EF. This material can also have possible applications in optoelectronics.
Anahtar Kelimeler
elastic constants | electronic structure | First principles calculations | ternary hydrides
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı MATERIALS RESEARCH EXPRESS
Dergi ISSN 2053-1591 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q3
Makale Dili İngilizce
Basım Tarihi 06-2018
Cilt No 5
Sayı 6
Sayfalar 65517 / 0
Doi Numarası 10.1088/2053-1591/aacbb6
Makale Linki http://stacks.iop.org/2053-1591/5/i=6/a=065517?key=crossref.0572bfef0636fd95add6c8a52111b72a