Ultra-Fast Cycling of Nanoscale Thin-Film LiCoO2 Electrodes in Aqueous Electrolytes

Tomás M. Clancy; James F. Rohan

doi:10.1002/celc.201800822

Ultra-Fast Cycling of Nanoscale Thin-Film LiCoO₂ Electrodes in Aqueous Electrolytes

Tomás M. Clancy
, James F. Rohan

University College Cork

Research output: Contribution to journal › Article › peer-review

Abstract

Additive-free nanoscale LiCoO₂ thin-films deposited on Si substrates using DC sputtering show exceptional electrochemical performance due to the unique kinetics of the nanoscale thin-film in aqueous environment. At extremely high scan rates and galvanostatic current densities of up to 100 mV s⁻¹ and 200 C respectively, a capacity retention equivalent to 97 mAh g⁻¹ (4.8 μAh cm⁻², 48.3 μAh cm⁻² μm⁻¹) is obtained. A significant contribution of non-diffusion controlled kinetics in a LiCoO₂ electrode is shown.

Original language	English
Pages (from-to)	3273-3278
Number of pages	6
Journal	ChemElectroChem
Volume	5
Issue number	21
DOIs	https://doi.org/10.1002/celc.201800822
Publication status	Published - 2 Nov 2018

Keywords

aqueous electrolyte
cathode
intercalations
LiCoO
materials science

UN SDGs

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

Access to Document

10.1002/celc.201800822

https://hdl.handle.net/10468/6863Licence: CC BY-NC-ND

Cite this

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title = "Ultra-Fast Cycling of Nanoscale Thin-Film LiCoO2 Electrodes in Aqueous Electrolytes",

abstract = "Additive-free nanoscale LiCoO2 thin-films deposited on Si substrates using DC sputtering show exceptional electrochemical performance due to the unique kinetics of the nanoscale thin-film in aqueous environment. At extremely high scan rates and galvanostatic current densities of up to 100 mV s−1 and 200 C respectively, a capacity retention equivalent to 97 mAh g−1 (4.8 μAh cm−2, 48.3 μAh cm−2 μm−1) is obtained. A significant contribution of non-diffusion controlled kinetics in a LiCoO2 electrode is shown.",

keywords = "aqueous electrolyte, cathode, intercalations, LiCoO, materials science",

author = "Clancy, \{Tom{\'a}s M.\} and Rohan, \{James F.\}",

note = "Publisher Copyright: {\textcopyright} 2018 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim",

year = "2018",

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doi = "10.1002/celc.201800822",

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AU - Clancy, Tomás M.

AU - Rohan, James F.

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N2 - Additive-free nanoscale LiCoO2 thin-films deposited on Si substrates using DC sputtering show exceptional electrochemical performance due to the unique kinetics of the nanoscale thin-film in aqueous environment. At extremely high scan rates and galvanostatic current densities of up to 100 mV s−1 and 200 C respectively, a capacity retention equivalent to 97 mAh g−1 (4.8 μAh cm−2, 48.3 μAh cm−2 μm−1) is obtained. A significant contribution of non-diffusion controlled kinetics in a LiCoO2 electrode is shown.

AB - Additive-free nanoscale LiCoO2 thin-films deposited on Si substrates using DC sputtering show exceptional electrochemical performance due to the unique kinetics of the nanoscale thin-film in aqueous environment. At extremely high scan rates and galvanostatic current densities of up to 100 mV s−1 and 200 C respectively, a capacity retention equivalent to 97 mAh g−1 (4.8 μAh cm−2, 48.3 μAh cm−2 μm−1) is obtained. A significant contribution of non-diffusion controlled kinetics in a LiCoO2 electrode is shown.

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KW - cathode

KW - intercalations

KW - LiCoO

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