Study of electrolytic cobalt sulfide Co9S8 as an electrode material in lithium accumulator prototypes

R. D. Apostolova; E. M. Shembel; I. Talyosef; J. Grinblat; B. Markovsky; D. Aurbach

doi:10.1134/s1023193509030112

Study of electrolytic cobalt sulfide Co₉S₈ as an electrode material in lithium accumulator prototypes

R. D. Apostolova, E. M. Shembel, I. Talyosef, J. Grinblat, B. Markovsky, D. Aurbach

Department of Chemistry

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

62 Scopus citations

Abstract

With the purpose to obtain a sulfide material for lithium and lithium-ionic thin-film batteries, cobalt sulfide Co₉S₈ was synthesized on an aluminum foil or stainless steel by electrolysis of aqueous solutions containing cobalt sulfate, sodium thiosulfate and sodium sulfide. The surface morphology of electrolytic Co₉S₈ is characterized by close packing of ball-like particles 8-12 μm in diameter, consisting of submicrometer structures 300-400 nm in size. It was found that e-Co ₉S₈ electrodes exhibit stable behavior during 100 lithiation-delithiation cycles in a voltage range of 2.8-1.1 V, providing a discharge capacity of '200 mAh/g. In a lithium cell with ethylene carbonate (EC)-dimethyl carbonate (DMC)-1M LiClO₄ electrolyte, a discharge capacity of the e-Co₉S₈-electrode was 250-450 mAh/g in a voltage range of 2.80-0.2 V. It was found that higher discharge capacities can be achieved for e-Co₉S₈-electrodes with a smaller active material mass.

Original language	English
Pages (from-to)	311-319
Number of pages	9
Journal	Russian Journal of Electrochemistry
Volume	45
Issue number	3
DOIs	https://doi.org/10.1134/s1023193509030112
State	Published - Mar 2009

Bibliographical note

Funding Information:
ACKNOWLEDGMENTS This study was supported by the Ministry of Education and Science of Ukraine and the Ministry of Science of Israel (project M/251-2006).

Funding

ACKNOWLEDGMENTS This study was supported by the Ministry of Education and Science of Ukraine and the Ministry of Science of Israel (project M/251-2006).

Funders	Funder number
Ministry of Science of Israel	M/251-2006
Ministry of Education and Science of Ukraine

Keywords

Discharge capacity of Co S-electrode
Electrolytic cobalt sulfide CoS
Lithium-ion battery
Structure
Surface morfology

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10.1134/s1023193509030112

Cite this

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title = "Study of electrolytic cobalt sulfide Co9S8 as an electrode material in lithium accumulator prototypes",

abstract = "With the purpose to obtain a sulfide material for lithium and lithium-ionic thin-film batteries, cobalt sulfide Co9S8 was synthesized on an aluminum foil or stainless steel by electrolysis of aqueous solutions containing cobalt sulfate, sodium thiosulfate and sodium sulfide. The surface morphology of electrolytic Co9S8 is characterized by close packing of ball-like particles 8-12 μm in diameter, consisting of submicrometer structures 300-400 nm in size. It was found that e-Co 9S8 electrodes exhibit stable behavior during 100 lithiation-delithiation cycles in a voltage range of 2.8-1.1 V, providing a discharge capacity of '200 mAh/g. In a lithium cell with ethylene carbonate (EC)-dimethyl carbonate (DMC)-1M LiClO4 electrolyte, a discharge capacity of the e-Co9S8-electrode was 250-450 mAh/g in a voltage range of 2.80-0.2 V. It was found that higher discharge capacities can be achieved for e-Co9S8-electrodes with a smaller active material mass.",

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author = "Apostolova, {R. D.} and Shembel, {E. M.} and I. Talyosef and J. Grinblat and B. Markovsky and D. Aurbach",

note = "Funding Information: ACKNOWLEDGMENTS This study was supported by the Ministry of Education and Science of Ukraine and the Ministry of Science of Israel (project M/251-2006).",

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AU - Apostolova, R. D.

AU - Shembel, E. M.

AU - Talyosef, I.

AU - Grinblat, J.

AU - Markovsky, B.

AU - Aurbach, D.

N1 - Funding Information: ACKNOWLEDGMENTS This study was supported by the Ministry of Education and Science of Ukraine and the Ministry of Science of Israel (project M/251-2006).

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N2 - With the purpose to obtain a sulfide material for lithium and lithium-ionic thin-film batteries, cobalt sulfide Co9S8 was synthesized on an aluminum foil or stainless steel by electrolysis of aqueous solutions containing cobalt sulfate, sodium thiosulfate and sodium sulfide. The surface morphology of electrolytic Co9S8 is characterized by close packing of ball-like particles 8-12 μm in diameter, consisting of submicrometer structures 300-400 nm in size. It was found that e-Co 9S8 electrodes exhibit stable behavior during 100 lithiation-delithiation cycles in a voltage range of 2.8-1.1 V, providing a discharge capacity of '200 mAh/g. In a lithium cell with ethylene carbonate (EC)-dimethyl carbonate (DMC)-1M LiClO4 electrolyte, a discharge capacity of the e-Co9S8-electrode was 250-450 mAh/g in a voltage range of 2.80-0.2 V. It was found that higher discharge capacities can be achieved for e-Co9S8-electrodes with a smaller active material mass.

AB - With the purpose to obtain a sulfide material for lithium and lithium-ionic thin-film batteries, cobalt sulfide Co9S8 was synthesized on an aluminum foil or stainless steel by electrolysis of aqueous solutions containing cobalt sulfate, sodium thiosulfate and sodium sulfide. The surface morphology of electrolytic Co9S8 is characterized by close packing of ball-like particles 8-12 μm in diameter, consisting of submicrometer structures 300-400 nm in size. It was found that e-Co 9S8 electrodes exhibit stable behavior during 100 lithiation-delithiation cycles in a voltage range of 2.8-1.1 V, providing a discharge capacity of '200 mAh/g. In a lithium cell with ethylene carbonate (EC)-dimethyl carbonate (DMC)-1M LiClO4 electrolyte, a discharge capacity of the e-Co9S8-electrode was 250-450 mAh/g in a voltage range of 2.80-0.2 V. It was found that higher discharge capacities can be achieved for e-Co9S8-electrodes with a smaller active material mass.

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