A new composite cathode for high-performance lithium-polymer batteries

P.P. Prosini, C. Capiglia, Y. Saito, T. Fujieda, R. Vellone, M. Shikano, T. Sakai

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Abstract

Low-molecular-weight poly(ethyleneglycol) was tested as lithium-ion conductive matrix in a crystalline V2O5-based composite cathode. To assess the feasibility of this composite cathode in solid-state rechargeable batteries, the ion transport properties, the chemical stability and the electrochemical stability were evaluated. The cathode exhibited fairly good electrochemical properties at a moderately high temperature. At 338 K, a7Li diffusion coefficient of about 6.8 × 10-8cm2s-1was measured. The cathode showed good thermal and electrochemical stability. Battery cells were assembled and their performance was evaluated at 338 K and at different discharge rates. About 270 mAh g-1(corresponding to 1.8 lithium equivalents) were delivered when cycling the battery at a low discharge rate (0.04 mA cm-2, C/24). The active material utilization decreased with increasing discharge rate. About 1.0 lithium equivalents were cycled at 0.270 mA cm-2and only 0.33 at 0.480 mA cm-2. © 2001 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1 - 6
Number of pages6
JournalJournal of Power Sources
Volume99
Issue number1-2
DOIs
Publication statusPublished - Aug 2001

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All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

Prosini, P. P., Capiglia, C., Saito, Y., Fujieda, T., Vellone, R., Shikano, M., & Sakai, T. (2001). A new composite cathode for high-performance lithium-polymer batteries. Journal of Power Sources, 99(1-2), 1 - 6. https://doi.org/10.1016/S0378-7753(00)00654-6