Mesoporous gold as anode material for lithium-ion cells

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Show simple item record Yuan, L Liu, HK Maaroof, A Konstantinov, K Liu, J Cortie, M 2010-05-14T07:44:35Z 2010-05-14T07:44:35Z en_US 2007-04
dc.identifier.citation Journal of New Materials for Electrochemical Systems, 2007, 10 (2), pp. 95 - 99
dc.identifier.issn 1480-2422
dc.identifier.other C1 en_US
dc.description.abstract Mesoporous gold sponges were prepared by chemical removal of Al from thin films of an AuAl2 precursor that had been deposited on Cu sheet. The morphology of the Au was characterised by interconnected pores and channels of between 5 and 20 nm in diameter. Here we report an assessment of these films as the electrode in Li rechargeable cells. It was found that the Li alloying processes occurred in the voltage range of 0 to 0.25 V, while de-alloying occurred in two stages at about 0.15 and 0.45V. This is significantly lower than in the Li-Sn or Li-Sn-Cu systems (0.2-1.0V) but comparable to that reported for thin, solid gold anodes. Overall, a multilayer mesoporous Au film showed superior characteristics compared to an ordinary Au film, with a higher specific charge passed. Capacity of all electrodes tested was of the order of 500 mA.h.g-1 during the initial discharge cycle, but was subject to a steep fade during subsequent cycles. The capacity of the multilayer, mesoporous gold settled at about 80 mA.h.g-1 after 30 cycles, while that of the ordinary Au film fell to about 10 mA.h.g-1. © J. New Mat. Electrochem. Systems.
dc.language eng
dc.title Mesoporous gold as anode material for lithium-ion cells
dc.type Journal Article
dc.parent Journal of New Materials for Electrochemical Systems
dc.journal.volume 2
dc.journal.volume 10
dc.journal.number 2 en_US
dc.publocation Montreal, Canada en_US
dc.identifier.startpage 95 en_US
dc.identifier.endpage 99 en_US SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 0912 Materials Engineering
dc.for 0204 Condensed Matter Physics
dc.for 0205 Optical Physics
dc.personcode 020302
dc.personcode 010727
dc.percentage 60 en_US Optical Physics en_US
dc.classification.type FOR-08 en_US
dc.description.keywords Anode
dc.description.keywords Gold
dc.description.keywords Lithium-ion
dc.description.keywords Mesoporous
dc.description.keywords Negative electrode
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
pubs.consider-herdc true
utslib.collection.history Closed (ID: 3)

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