Effects of substituting Cu for Sn on the microstructure and hydrogen absorption properties of Co-free AB5 alloys

Julio Cesar Serafim Casini; Franks Martins Silva; Zai-ping Guo; Hua Kun Liu; Rubens Nunes Faria; Hidetoshi Takiishi

doi:10.1016/j.ijhydene.2016.07.107

Effects of substituting Cu for Sn on the microstructure and hydrogen absorption properties of Co-free AB₅ alloys

Julio Cesar Serafim Casini^*
, Franks Martins Silva
, Zai-ping Guo
, Hua Kun Liu
, Rubens Nunes Faria
, Hidetoshi Takiishi

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

23 Citations (Scopus)

Abstract

The effects of substituting Cu for Sn on the microstructure, hydrogen storage capacity of La_0.7Mg_0.3Al_0.3Mn_0.4Sn_0.5−xCu_xNi_3.8 alloys (where X = 0.0, 0.1, 0.2, 0.3, and 0.5) alloys were investigated with X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and pressure-composition isotherms (PCIs). The alloys were mainly composed of three phases: LaNi₅, MgNi₂, and LaNiSn. However, the La_0.7Mg_0.3Al_0.3Mn_0.4Cu_0.5Ni_3.8 alloy (X = 0.5) exhibited a (La, Mg)Ni₃ phase when studied with SEM. The PCI tests showed that increasing the Cu content increases the maximum hydrogen storage capacity. © 2016 Hydrogen Energy Publications LLC

Original language	English
Pages (from-to)	17022-17028
Journal	International Journal of Hydrogen Energy
Volume	41
Issue number	38
DOIs	https://doi.org/10.1016/j.ijhydene.2016.07.107
Publication status	Published - 15 Oct 2016
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

The authors wish to thank the Institute for Superconducting and Electronic Materials (ISEM) of the University of Wollongong, the Nuclear and Energy Research Institute (IPEN) of the University of São Paulo, and Federal Institute of Education, Science and Technology of Rondônia for their financial support. The authors also wish to thank the National Council for Scientific and Technological Development of Brazil for the scholarships granted to Casini, J.C.S. (CNPq - SWE/CSF 237694/2012-3) and financial support ( CNPq 472504/2010-0 ) and ( CNPq 471889/2013-0 ).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

Hydrogen storage alloys
Microstructure
Ni–MH batteries
PCI characteristics
Rare earths

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Cite this

@article{0194843c6b8a4b0ba4cd858a45146e6c,

title = "Effects of substituting Cu for Sn on the microstructure and hydrogen absorption properties of Co-free AB5 alloys",

abstract = "The effects of substituting Cu for Sn on the microstructure, hydrogen storage capacity of La0.7Mg0.3Al0.3Mn0.4Sn0.5−xCuxNi3.8 alloys (where X = 0.0, 0.1, 0.2, 0.3, and 0.5) alloys were investigated with X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and pressure-composition isotherms (PCIs). The alloys were mainly composed of three phases: LaNi5, MgNi2, and LaNiSn. However, the La0.7Mg0.3Al0.3Mn0.4Cu0.5Ni3.8 alloy (X = 0.5) exhibited a (La, Mg)Ni3 phase when studied with SEM. The PCI tests showed that increasing the Cu content increases the maximum hydrogen storage capacity. {\textcopyright} 2016 Hydrogen Energy Publications LLC",

keywords = "Hydrogen storage alloys, Microstructure, Ni–MH batteries, PCI characteristics, Rare earths",

author = "Casini, \{Julio Cesar Serafim\} and Silva, \{Franks Martins\} and Zai-ping Guo and Liu, \{Hua Kun\} and Faria, \{Rubens Nunes\} and Hidetoshi Takiishi",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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Effects of substituting Cu for Sn on the microstructure and hydrogen absorption properties of Co-free AB₅ alloys. / Casini, Julio Cesar Serafim; Silva, Franks Martins; Guo, Zai-ping et al.
In: International Journal of Hydrogen Energy, Vol. 41, No. 38, 15.10.2016, p. 17022-17028.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Effects of substituting Cu for Sn on the microstructure and hydrogen absorption properties of Co-free AB5 alloys

AU - Casini, Julio Cesar Serafim

AU - Silva, Franks Martins

AU - Guo, Zai-ping

AU - Liu, Hua Kun

AU - Faria, Rubens Nunes

AU - Takiishi, Hidetoshi

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2016/10/15

Y1 - 2016/10/15

N2 - The effects of substituting Cu for Sn on the microstructure, hydrogen storage capacity of La0.7Mg0.3Al0.3Mn0.4Sn0.5−xCuxNi3.8 alloys (where X = 0.0, 0.1, 0.2, 0.3, and 0.5) alloys were investigated with X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and pressure-composition isotherms (PCIs). The alloys were mainly composed of three phases: LaNi5, MgNi2, and LaNiSn. However, the La0.7Mg0.3Al0.3Mn0.4Cu0.5Ni3.8 alloy (X = 0.5) exhibited a (La, Mg)Ni3 phase when studied with SEM. The PCI tests showed that increasing the Cu content increases the maximum hydrogen storage capacity. © 2016 Hydrogen Energy Publications LLC

AB - The effects of substituting Cu for Sn on the microstructure, hydrogen storage capacity of La0.7Mg0.3Al0.3Mn0.4Sn0.5−xCuxNi3.8 alloys (where X = 0.0, 0.1, 0.2, 0.3, and 0.5) alloys were investigated with X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and pressure-composition isotherms (PCIs). The alloys were mainly composed of three phases: LaNi5, MgNi2, and LaNiSn. However, the La0.7Mg0.3Al0.3Mn0.4Cu0.5Ni3.8 alloy (X = 0.5) exhibited a (La, Mg)Ni3 phase when studied with SEM. The PCI tests showed that increasing the Cu content increases the maximum hydrogen storage capacity. © 2016 Hydrogen Energy Publications LLC

KW - Hydrogen storage alloys

KW - Microstructure

KW - Ni–MH batteries

KW - PCI characteristics

KW - Rare earths

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U2 - 10.1016/j.ijhydene.2016.07.107

DO - 10.1016/j.ijhydene.2016.07.107

M3 - RGC 21 - Publication in refereed journal

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