Research output: Contribution to journal › Article › peer-review
Electrochemical properties of PEDOT/WO3 composite films for high performance supercapacitor application. / Zhuzhelskii, D.V.; Tolstopjatova, E.G.; Eliseeva, S.N.; Ivanov, A.V.; Miao , Shoulei; Kondratiev, V.V.
In: Electrochimica Acta, Vol. 299, 10.03.2019, p. 182-190.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Electrochemical properties of PEDOT/WO3 composite films for high performance supercapacitor application
AU - Zhuzhelskii, D.V.
AU - Tolstopjatova, E.G.
AU - Eliseeva, S.N.
AU - Ivanov, A.V.
AU - Miao , Shoulei
AU - Kondratiev, V.V.
PY - 2019/3/10
Y1 - 2019/3/10
N2 - Tungsten oxide was electrochemically deposited from a metastable acidic solution of isopolytungstate on glassy carbon electrodes coated by the films of a conducting polymer poly-3,4-ethylenedioxythiophene (PEDOT). The formation of PEDOT/WO 3 composite films during electrochemical deposition of tungsten oxide into the polymer matrix was gravimetrically monitored by EQCM. The morphology of WO 3 deposits was studied using SEM, TEM and EDX analysis, including element mapping and depth concentration profile of main elements. SEM and TEM images of PEDOT/WO 3 composites show disperse distribution of WO 3 precipitates in the porous matrix of PEDOT, possessing high surface area and pore volume, effective for charge transport. Electrochemical behavior of PEDOT/WO 3 was investigated in 0.5 M H 2 SO 4 by cyclic voltammetry, galvanostatic charge-discharge method and electrochemical impedance spectroscopy. The WO 3 component in the obtained PEDOT/WO 3 composite electrodes exhibited high specific capacitance of 689 F g −1 in the potential range −0.3–0.0 V. The work presents a simple approach for the synthesis of PEDOT/WO 3 composites with high values of specific capacitance. The obtained results indicate that PEDOT/WO 3 composite could be a promising electrode material for supercapacitor applications.
AB - Tungsten oxide was electrochemically deposited from a metastable acidic solution of isopolytungstate on glassy carbon electrodes coated by the films of a conducting polymer poly-3,4-ethylenedioxythiophene (PEDOT). The formation of PEDOT/WO 3 composite films during electrochemical deposition of tungsten oxide into the polymer matrix was gravimetrically monitored by EQCM. The morphology of WO 3 deposits was studied using SEM, TEM and EDX analysis, including element mapping and depth concentration profile of main elements. SEM and TEM images of PEDOT/WO 3 composites show disperse distribution of WO 3 precipitates in the porous matrix of PEDOT, possessing high surface area and pore volume, effective for charge transport. Electrochemical behavior of PEDOT/WO 3 was investigated in 0.5 M H 2 SO 4 by cyclic voltammetry, galvanostatic charge-discharge method and electrochemical impedance spectroscopy. The WO 3 component in the obtained PEDOT/WO 3 composite electrodes exhibited high specific capacitance of 689 F g −1 in the potential range −0.3–0.0 V. The work presents a simple approach for the synthesis of PEDOT/WO 3 composites with high values of specific capacitance. The obtained results indicate that PEDOT/WO 3 composite could be a promising electrode material for supercapacitor applications.
KW - Cyclic voltammetry
KW - EQCM evaluation of mass
KW - Electrochemical deposition
KW - Poly-3,4-ethylenedioxythiophene
KW - Tungsten oxide
UR - http://www.scopus.com/inward/record.url?scp=85060036212&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2019.01.007
DO - 10.1016/j.electacta.2019.01.007
M3 - Article
VL - 299
SP - 182
EP - 190
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
ER -
ID: 36110835