Reversibility of the lithium—vanadium bronze structure when cycled

Autor: O. Yu. Grigor’eva, Alexander M. Skundin, A. K. Ivanov-Shitz, S. V. Pushko
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