Effect of Vinylene Carbonate on Graphite Anode Cycling Efficiency

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Vinylene Carbonate (VC) was added to the electrolyte in graphite-lithium half-cells. We report its effect on the coulombic efficiency (as capacity shift) of graphite electrodes under various formation cycling conditions. Cyclic voltammetry on glassy carbon showed that VC passivates the electrode against electrolyte reduction. The dQ/dV plots of the first lithiation of the graphite suggest that VC alters the SEI layer, and that by varying the cell formation rate, the initial ratio of ethylene carbonate to VC in the SEI layer can be controlled. VC was found to decrease first cycle efficiency and reversible capacity (in ongoing cycling) when used ... continued below

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Ridgway, Paul; Zheng, Honghe; Liu, Gao; Song, Xiangun; Ross, Philip & Battaglia, Vincent May 5, 2009.

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Vinylene Carbonate (VC) was added to the electrolyte in graphite-lithium half-cells. We report its effect on the coulombic efficiency (as capacity shift) of graphite electrodes under various formation cycling conditions. Cyclic voltammetry on glassy carbon showed that VC passivates the electrode against electrolyte reduction. The dQ/dV plots of the first lithiation of the graphite suggest that VC alters the SEI layer, and that by varying the cell formation rate, the initial ratio of ethylene carbonate to VC in the SEI layer can be controlled. VC was found to decrease first cycle efficiency and reversible capacity (in ongoing cycling) when used to excess. However, experiments with VC additive used with various formation rates did not show any decrease in capacity shift.

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51

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  • Journal Name: ECS Transactions

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  • Report No.: LBNL-3572E
  • Grant Number: DE-AC02-05CH11231
  • DOI: 10.1149/1.3247065 | External Link
  • Office of Scientific & Technical Information Report Number: 984362
  • Archival Resource Key: ark:/67531/metadc1015320

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • May 5, 2009

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  • Oct. 14, 2017, 8:36 a.m.

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  • Oct. 17, 2017, 8:12 p.m.

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Ridgway, Paul; Zheng, Honghe; Liu, Gao; Song, Xiangun; Ross, Philip & Battaglia, Vincent. Effect of Vinylene Carbonate on Graphite Anode Cycling Efficiency, article, May 5, 2009; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc1015320/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.