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Effect of cycling on the lithium/electrolyte interface in organic electrolytes (1993)

Narayanan, S. R. ; Surampudi, S. ; Huang, C.-K. ; [et al.]

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Publication Date: 2011-08-24

Description: Nondestructive methods such as ac impedance spectroscopy and microcalorimetry are used to study the effect of cell cycling on the lithium/electrolyte interface. The reactivity of both uncycled and cycled lithium towards various electrolytes is examined by measuring the heat evolved from the cells under open-circuit conditions at 25 C by microcalorimetry. Cycled cells at the end of charge/discharge exhibited considerably higher heat output compared with the uncycled cells. After 30 d of storage, the heat output of the cycled cells is similar to that of the uncycled cells. The cell internal resistance increases with cycling, and this is attributed to the degradation of the electrolyte with cycling.

Keywords: INORGANIC AND PHYSICAL CHEMISTRY

Type: Journal of Power Sources (ISSN 0378-7753); 43; 1-3; p. 21-26.

Format: text

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