Effect of Sn substitution for Co on microstructure and electrochemical performance of AB5 type La0.7Mg0.3Al0.3Mn0.4Co0.5-xSnxNi3.8 (x=0-0.5) alloys

Julio Cesar Serafim Casini; Zai-Ping Guo; Hua Kun Liu; Eliner Affonso Ferreira; Rubens Nunes Faria; Hidetoshi Takiishi

doi:10.1016/S1003-6326(15)63633-0

Effect of Sn substitution for Co on microstructure and electrochemical performance of AB₅ type La_0.7Mg_0.3Al_0.3Mn_0.4Co_0.5-xSn_xNi_3.8 (x=0-0.5) alloys

Julio Cesar Serafim Casini^*
, Zai-Ping Guo
, Hua Kun Liu
, Eliner Affonso Ferreira
, Rubens Nunes Faria
, Hidetoshi Takiishi

^*Corresponding author for this work

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

11 Citations (Scopus)

Abstract

The effects of substitution of Sn for Co on the microstructure, hydrogen storage and electrochemical discharge capacity of La_0.7Mg_0.3Al_0.3Mn_0.4Co_0.5-xSn_xNi_3.8 (x=0, 0.1, 0.2, 0.3 and 0.5) alloys were investigated using X-ray diffraction (XRD), pressure composition isotherm (PCT) and electrochemical discharge cycle. XRD, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) tests showed that all of alloys are mainly composed of LaNi₅ and MgNi₂ phases, but when increasing the content of Sn in alloys, the LaNiSn phase appears and microstructure is refined. The PCT showed that increasing substitution of Sn for Co results in decrease of the maximum hydrogen storage capacity from 1.48% (x=0) to 0.85% (x=0.5). The electrochemical tests indicated that the maximum discharge capacity decreases from 337.1 mA·h/g (x=0) to 239.8 mA·h/g (x=0.5); however, the discharge capacity retention at the 100th cycle increases from 70.2% (x=0) to 78.0% (x=0.5). © 2015 The Nonferrous Metals Society of China.

Original language	English
Pages (from-to)	520-526
Journal	Transactions of Nonferrous Metals Society of China (English Edition)
Volume	25
Issue number	2
DOIs	https://doi.org/10.1016/S1003-6326(15)63633-0
Publication status	Published - 1 Feb 2015
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 Institute for Superconducting and Electronic Materials (ISEM), University of Wollongong and Institute Nuclear and Energy Research (IPEN), University of São Paulo for the financial support and thanks are also given to National Council for Scientific and Technological Development – CNPQ – Brazil for the scholarships and financial support (CNPQ 472504/2010-0) granted to Julio Cesar Serafim CASINI.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Research Keywords

Co
hydrogen storage alloys
microstructure
Ni-MH batteries
Sn
substitution

Access Output

10.1016/S1003-6326(15)63633-0

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

Casini, J. C. S., Guo, Z.-P., Kun Liu, H., Ferreira, E. A., Nunes Faria, R., & Takiishi, H. (2015). Effect of Sn substitution for Co on microstructure and electrochemical performance of AB₅ type La_0.7Mg_0.3Al_0.3Mn_0.4Co_0.5-xSn_xNi_3.8 (x=0-0.5) alloys. Transactions of Nonferrous Metals Society of China (English Edition), 25(2), 520-526. https://doi.org/10.1016/S1003-6326(15)63633-0

@article{43534b797ae24c5e9d7a284ba83c315a,

title = "Effect of Sn substitution for Co on microstructure and electrochemical performance of AB5 type La0.7Mg0.3Al0.3Mn0.4Co0.5-xSnxNi3.8 (x=0-0.5) alloys",

abstract = "The effects of substitution of Sn for Co on the microstructure, hydrogen storage and electrochemical discharge capacity of La0.7Mg0.3Al0.3Mn0.4Co0.5-xSnxNi3.8 (x=0, 0.1, 0.2, 0.3 and 0.5) alloys were investigated using X-ray diffraction (XRD), pressure composition isotherm (PCT) and electrochemical discharge cycle. XRD, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) tests showed that all of alloys are mainly composed of LaNi5 and MgNi2 phases, but when increasing the content of Sn in alloys, the LaNiSn phase appears and microstructure is refined. The PCT showed that increasing substitution of Sn for Co results in decrease of the maximum hydrogen storage capacity from 1.48\% (x=0) to 0.85\% (x=0.5). The electrochemical tests indicated that the maximum discharge capacity decreases from 337.1 mA·h/g (x=0) to 239.8 mA·h/g (x=0.5); however, the discharge capacity retention at the 100th cycle increases from 70.2\% (x=0) to 78.0\% (x=0.5). {\textcopyright} 2015 The Nonferrous Metals Society of China.",

keywords = "Co, hydrogen storage alloys, microstructure, Ni-MH batteries, Sn, substitution",

author = "Casini, \{Julio Cesar Serafim\} and Zai-Ping Guo and \{Kun Liu\}, Hua and Ferreira, \{Eliner Affonso\} and \{Nunes Faria\}, Rubens 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].",

year = "2015",

month = feb,

day = "1",

doi = "10.1016/S1003-6326(15)63633-0",

language = "English",

volume = "25",

pages = "520--526",

journal = "Transactions of Nonferrous Metals Society of China (English Edition)",

issn = "1003-6326",

publisher = "Nonferrous Metals Society of China",

number = "2",

}

Casini, JCS, Guo, Z-P, Kun Liu, H, Ferreira, EA, Nunes Faria, R & Takiishi, H 2015, 'Effect of Sn substitution for Co on microstructure and electrochemical performance of AB₅ type La_0.7Mg_0.3Al_0.3Mn_0.4Co_0.5-xSn_xNi_3.8 (x=0-0.5) alloys', Transactions of Nonferrous Metals Society of China (English Edition), vol. 25, no. 2, pp. 520-526. https://doi.org/10.1016/S1003-6326(15)63633-0

Effect of Sn substitution for Co on microstructure and electrochemical performance of AB₅ type La_0.7Mg_0.3Al_0.3Mn_0.4Co_0.5-xSn_xNi_3.8 (x=0-0.5) alloys. / Casini, Julio Cesar Serafim; Guo, Zai-Ping; Kun Liu, Hua et al.
In: Transactions of Nonferrous Metals Society of China (English Edition), Vol. 25, No. 2, 01.02.2015, p. 520-526.

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

TY - JOUR

T1 - Effect of Sn substitution for Co on microstructure and electrochemical performance of AB5 type La0.7Mg0.3Al0.3Mn0.4Co0.5-xSnxNi3.8 (x=0-0.5) alloys

AU - Casini, Julio Cesar Serafim

AU - Guo, Zai-Ping

AU - Kun Liu, Hua

AU - Ferreira, Eliner Affonso

AU - Nunes Faria, Rubens

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 - 2015/2/1

Y1 - 2015/2/1

N2 - The effects of substitution of Sn for Co on the microstructure, hydrogen storage and electrochemical discharge capacity of La0.7Mg0.3Al0.3Mn0.4Co0.5-xSnxNi3.8 (x=0, 0.1, 0.2, 0.3 and 0.5) alloys were investigated using X-ray diffraction (XRD), pressure composition isotherm (PCT) and electrochemical discharge cycle. XRD, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) tests showed that all of alloys are mainly composed of LaNi5 and MgNi2 phases, but when increasing the content of Sn in alloys, the LaNiSn phase appears and microstructure is refined. The PCT showed that increasing substitution of Sn for Co results in decrease of the maximum hydrogen storage capacity from 1.48% (x=0) to 0.85% (x=0.5). The electrochemical tests indicated that the maximum discharge capacity decreases from 337.1 mA·h/g (x=0) to 239.8 mA·h/g (x=0.5); however, the discharge capacity retention at the 100th cycle increases from 70.2% (x=0) to 78.0% (x=0.5). © 2015 The Nonferrous Metals Society of China.

AB - The effects of substitution of Sn for Co on the microstructure, hydrogen storage and electrochemical discharge capacity of La0.7Mg0.3Al0.3Mn0.4Co0.5-xSnxNi3.8 (x=0, 0.1, 0.2, 0.3 and 0.5) alloys were investigated using X-ray diffraction (XRD), pressure composition isotherm (PCT) and electrochemical discharge cycle. XRD, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) tests showed that all of alloys are mainly composed of LaNi5 and MgNi2 phases, but when increasing the content of Sn in alloys, the LaNiSn phase appears and microstructure is refined. The PCT showed that increasing substitution of Sn for Co results in decrease of the maximum hydrogen storage capacity from 1.48% (x=0) to 0.85% (x=0.5). The electrochemical tests indicated that the maximum discharge capacity decreases from 337.1 mA·h/g (x=0) to 239.8 mA·h/g (x=0.5); however, the discharge capacity retention at the 100th cycle increases from 70.2% (x=0) to 78.0% (x=0.5). © 2015 The Nonferrous Metals Society of China.

KW - Co

KW - hydrogen storage alloys

KW - microstructure

KW - Ni-MH batteries

KW - Sn

KW - substitution

UR - https://www.scopus.com/pages/publications/84924993913

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84924993913&origin=recordpage

U2 - 10.1016/S1003-6326(15)63633-0

DO - 10.1016/S1003-6326(15)63633-0

M3 - RGC 21 - Publication in refereed journal

SN - 1003-6326

VL - 25

SP - 520

EP - 526

JO - Transactions of Nonferrous Metals Society of China (English Edition)

JF - Transactions of Nonferrous Metals Society of China (English Edition)

IS - 2

ER -