Author： Kulova T. L.
Publisher： MAIK Nauka/Interperiodica
ISSN： 1023-1935
Source： Russian Journal of Electrochemistry, Vol.40, Iss.10, 2004-10, pp. : 1052-1059
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Abstract
Effect of temperature on reversible and irreversible processes during lithium intercalation in graphite from 1 M LiClO4 solution in PC–DME is studied by galvanostatic cycling, cyclic voltammetry, and impedance spectroscopy. Reducing temperature diminishes both reversible and irreversible capacities. Conditions for the passive-film formation on graphite are discussed. If several first cycles are run at a negative temperature, the overall charge spent irreversibly decreases if the temperature is then elevated. The lower the initial-cycling temperature, the smaller the overall irreversible capacity.
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