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Effect of low B addition on Al-Zn alloy's hydrogen production performance     
Yazarlar
Mehmet Fatih Kaya
Osman Kahveci
Harun Erol
Doç. Dr. Abdullah AKKAYA Doç. Dr. Abdullah AKKAYA
Kırşehir Ahi Evran Üniversitesi
Özet
Aluminium hydrolysis is a promising method for hydrogen generation due to its instant hydrogen production, simplicity, controllability, and safety properties. Moreover, Al is very common, recyclable, lightweight material and it has no degradation problem to supply hydrogen in energy conversion devices. Hydrogen produced by Al can be easily adapted to fuel cells to convert energy into higher efficiency. In this study, the effect of low B additions (0.1, 0.3, and 0.5 wt.%) to the Al-2wt.%Zn alloy's hydrogen generation performance is investigated. Different temperatures (25, 50, and 80 degrees C) and different concentrations of NaOH (1, 3, and 5 M) are studied to observe their effects on the hydrogen production and corrosion rate. At 80 degrees C and 5 M NaOH concentration, in Al-2wt.%Zn-0.5wt.%B alloy, around 83% higher hydrogen generation performance is obtained than Al-2wt.% Zn alloy. The hydrolysis reaction kinetics are investigated with the Arrhenius equation and by low B addition, activation energy of the Al-2wt.%Zn and Al-2wt.%Zn-0.5 wt.%B alloys are decreased from 26.717 kJ mol(-1) to 23.526 kJ mol(-1). (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Anahtar Kelimeler
Hydrogen production | Al-Zn Alloy | Boron | Aluminium boride | Alkaline media
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Dergi ISSN 0360-3199
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q2
Makale Dili İngilizce
Basım Tarihi 04-2021
Cilt No 46
Sayı 29
Sayfalar 15192 / 15202
Doi Numarası 10.1016/j.ijhydene.2021.02.086