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Title: Study of the reaction of lithium with isostructural A{sub 2}B and various Al{sub x}B alloys

Abstract

The electrochemical alloying reaction of Li with isostructural A{sub 2}B and Al-based alloys has been investigated. The binary A{sub 2}B alloys the authors selected (Sb{sub 2}Ti, Sb{sub 2}V, Sn{sub 2}Co, Sn{sub 2}Mn, Sn{sub 2}Fe, Al{sub 2}Cu, and Ge{sub 2}Fe) are isostructural (Al{sub 2}Cu type) and comprise an active element (A) that alloys with lithium, and an inactive one (B) that does not. These compounds were prepared by mechanical alloying and have small grain size (10--20 nm). With the exception of Al{sub 2}Cu, the authors observed a full reaction of A with lithium (A{sub 2}B + 2xLi {yields} B + 2Li{sub x}A, where the theoretical values of x are 1 for Al, 3 for Sb, and 4.4 for Si, Ge, and Sn). Extremely slow electrochemical cycling at 55 C and potentiostatic tests at lithium potential proved the total inactivity of the Al{sub 2}Cu vs. lithium. However, thermodynamic considerations predict that the reaction of Al{sub 2}Cu with Li should occur and that the formation of LiAl should be observed. Other Al-transition metal intermetallics were studied and were also found to be inert toward Li, suggesting that the Al-transition metal bond has unique features.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Dalhousie Univ., Halifax, Nova Scotia (CA)
OSTI Identifier:
20080566
Resource Type:
Journal Article
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 147; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0013-4651
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 25 ENERGY STORAGE; METAL-NONMETAL BATTERIES; ANODES; LITHIUM; ALUMINIUM ALLOYS; ANTIMONY ALLOYS; TITANIUM ALLOYS; VANADIUM ALLOYS; COBALT ALLOYS; MANGANESE ALLOYS; IRON ALLOYS; COPPER ALLOYS; GERMANIUM ALLOYS; MILLING; INTERMETALLIC COMPOUNDS; ELECTRICAL PROPERTIES

Citation Formats

Larcher, D., Beaulieu, L.Y., Mao, O., George, A.E., and Dahn, J.R. Study of the reaction of lithium with isostructural A{sub 2}B and various Al{sub x}B alloys. United States: N. p., 2000. Web. doi:10.1149/1.1393421.
Larcher, D., Beaulieu, L.Y., Mao, O., George, A.E., & Dahn, J.R. Study of the reaction of lithium with isostructural A{sub 2}B and various Al{sub x}B alloys. United States. doi:10.1149/1.1393421.
Larcher, D., Beaulieu, L.Y., Mao, O., George, A.E., and Dahn, J.R. Mon . "Study of the reaction of lithium with isostructural A{sub 2}B and various Al{sub x}B alloys". United States. doi:10.1149/1.1393421.
@article{osti_20080566,
title = {Study of the reaction of lithium with isostructural A{sub 2}B and various Al{sub x}B alloys},
author = {Larcher, D. and Beaulieu, L.Y. and Mao, O. and George, A.E. and Dahn, J.R.},
abstractNote = {The electrochemical alloying reaction of Li with isostructural A{sub 2}B and Al-based alloys has been investigated. The binary A{sub 2}B alloys the authors selected (Sb{sub 2}Ti, Sb{sub 2}V, Sn{sub 2}Co, Sn{sub 2}Mn, Sn{sub 2}Fe, Al{sub 2}Cu, and Ge{sub 2}Fe) are isostructural (Al{sub 2}Cu type) and comprise an active element (A) that alloys with lithium, and an inactive one (B) that does not. These compounds were prepared by mechanical alloying and have small grain size (10--20 nm). With the exception of Al{sub 2}Cu, the authors observed a full reaction of A with lithium (A{sub 2}B + 2xLi {yields} B + 2Li{sub x}A, where the theoretical values of x are 1 for Al, 3 for Sb, and 4.4 for Si, Ge, and Sn). Extremely slow electrochemical cycling at 55 C and potentiostatic tests at lithium potential proved the total inactivity of the Al{sub 2}Cu vs. lithium. However, thermodynamic considerations predict that the reaction of Al{sub 2}Cu with Li should occur and that the formation of LiAl should be observed. Other Al-transition metal intermetallics were studied and were also found to be inert toward Li, suggesting that the Al-transition metal bond has unique features.},
doi = {10.1149/1.1393421},
journal = {Journal of the Electrochemical Society},
issn = {0013-4651},
number = 5,
volume = 147,
place = {United States},
year = {2000},
month = {5}
}