Preparation and characterization of (PVP + NaClO4) electrolytes for battery applications
Institute of Materials Science and Engineering, Wuhan University of Technology, 430-070, Wuhan, PRC
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Accepted: 11 February 2006
Published online: 10 April 2006
A sodium ion-conducting polymer electrolyte based on polyvinyl pyrrolidone (PVP) complexed with NaClO4 was prepared using the solution-cast technique. The cathode film of V2O5 xerogel modified with polyvinyl pyrrolidone was prepared using the sol-gel method. Investigations were conducted using X-ray diffractometry (XRD), Fourier transformation infrared (FT-IR) spectroscopy. The ionic conductivity and transference number measurements were performed to characterize the polymer electrolyte for battery applications. The transference number data indicated that the conducting species in these electrolytes are the anions. Using the electrolyte, electrochemical cells with a configuration Na/(PVP + NaClO4)/V2O5 modified by (PVP) were fabricated and their discharge profiles studied.
PACS: 82.35.Rs Polyelectrolytes – / 66.30.Dn Theory of diffusion and ionic conduction in solids – / 82.45.Gj Electrolytes – / 82.47.Aa Lithium-ion batteries –
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2006