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Large scale flexible solid state symmetric supercapacitor through inexpensive solution processed V2O5 complex surface architecture

AuthorsPandit, Bidhan; Dubal, Deepak P.; Sankapal, Babasaheb R.
V2O5 flakes
Symmetric device
Chemical method
Issue Date2017
CitationElectrochimica Acta 242: 382-389 (2017)
AbstractComplex nanostructured morphology of VO has been grown on pliable stainless steel substrate (SS) through simple and inexpensive chemical bath deposition (CBD) for all-solid state flexible supercapacitor (SC). The structure and morphology of the synthesized VO thin films revealed the formation of intermixed flakes. High specific capacitance of 735 F g (at scan rate of 1 mV s) of VO through liquid configuration motivated us to form complete flexible all-solid state symmetric supercapacitor (FASC) device. Remarkable specific capacitance of 358 F g−. With 1.8 V wide potential window and high value of capacitive retention of 88% over 1000 cycles has been achieved for FASC. Furthermore, the origin of capacitive behavior from dual contributions of surface-controlled and diffusion-controlled charge components has been evaluated to identify the dominating nature in electrochemical reactions. As practical applicability, pliability of electrode has been tested at 175° bending angle along with the integration to large scale electrode dimension (11 ×4 cm).
Identifiersdoi: 10.1016/j.electacta.2017.05.010
issn: 0013-4686
Appears in Collections:(CIN2) Artículos
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