Reversibility of the lithium—vanadium bronze structure when cycled
Autor: | O. Yu. Grigor’eva, Alexander M. Skundin, A. K. Ivanov-Shitz, S. V. Pushko |
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Rok vydání: | 2000 |
Předmět: | |
Zdroj: | Russian Journal of Electrochemistry. 36:802-805 |
ISSN: | 1608-3342 1023-1935 |
DOI: | 10.1007/bf02757686 |
Popis: | Positive electrodes of secondary lithium batteries, based on Li1 + xV3O8 obtained by the alcoxytechnology, are studied. As lithium intercalates, the initial crystalline bronze turns amorphous, remaining single-phase. An increase in the lithiation degreex leads to an almost linear decrease in parametera and increase in parametersb andc of the bronze crystal lattice; the changes are quite reversible when cycling. A noticeable degradation of electric characteristics of electrodes is unrelated to irreversible structural changes and may be explained by the formation of passive films on the bronze surface. |
Databáze: | OpenAIRE |
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