High power copper sulfide cathodes for thin-film microbatteries

H. Mazor, Diana Golodnitsky, L. Burstein, Emanuel Peled

Research output: Contribution to journalArticlepeer-review

Abstract

An electrodeposition method has been used to prepare thin CuS films on nickel- or gold-coated silicon substrates. The effects of current density, deposition time, solution stirring, and addition of polymer additives have been studied to determine the optimum conditions for CuS formation. Semi-three-dimensional concentric microbatteries (3DCMBs) on perforated silicon substrates showed a superior peak-power capability of 50 mW/cm2 and a stable electrochemical behavior. The reversible capacity of the semi-3DCMBs is 1.0-2.5 mAh/cm2 of battery footprint, which agreed with the geometrical-area gain. It is expected that the full 3DCMB may exhibit even better energy density and power capability of 7.4 kW/L.

Original languageEnglish
Pages (from-to)A232-A235
JournalElectrochemical and Solid-State Letters
Volume12
Issue number12
DOIs
StatePublished - 2009

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