TY - JOUR
T1 - Enhanced morphology, crystallinity and conductivity of poly (3,4-ethyldioxythiophene)/ErGO composite films by in situ reduction of TrGO partially reduced on PEDOT modified electrode
AU - Hernández, L. A.
AU - Riveros, G.
AU - Martín, F.
AU - González, D. M.
AU - Lopez, M. C.
AU - León, M.
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017/6/20
Y1 - 2017/6/20
N2 - In this work, novel composites obtained by electrochemical reduction of graphene oxide (ErGO)/poly(3,4-ethylenedioxythiophene), PEDOT, have been prepared by partially reduced (TrGO) graphene oxide reduction inside the polymer. Composites were characterized using different techniques namely, RAMAN, XRD, FESEM, HR-TEM and XPS. The results showed that the conductivity of PEDOT/ErGO significantly improves on TrGO reduction. In fact, doping-undoping process increased 10-fold and the electrochemical response showed a 2-fold increase as compared with PEDOT and PEDOT/TrGO. RAMAN, XRD and XPS allowed corroborating that C[sbnd]O bonds disappeared in PEDOT/ErGO composites suggesting a partial removal of oxygen-containing groups. FESEM and HR-TEM images exhibited a uniform and porous structure of the PEDOT/ErGO composite. On the other hand, the reduction of TrGO, improves the composite specific surface area. As a result, the PEDOT/ErGO composite presents much higher electrochemical response in comparison with PEDOT and PEDOT/TrGO. The electrochemical properties put them into a promising position as a potential material for energy storage devices, e.g. super capacitors, batteries and biosensors, due to the permeable film with defined pore sizes that PEDOT/ErGO showed.
AB - In this work, novel composites obtained by electrochemical reduction of graphene oxide (ErGO)/poly(3,4-ethylenedioxythiophene), PEDOT, have been prepared by partially reduced (TrGO) graphene oxide reduction inside the polymer. Composites were characterized using different techniques namely, RAMAN, XRD, FESEM, HR-TEM and XPS. The results showed that the conductivity of PEDOT/ErGO significantly improves on TrGO reduction. In fact, doping-undoping process increased 10-fold and the electrochemical response showed a 2-fold increase as compared with PEDOT and PEDOT/TrGO. RAMAN, XRD and XPS allowed corroborating that C[sbnd]O bonds disappeared in PEDOT/ErGO composites suggesting a partial removal of oxygen-containing groups. FESEM and HR-TEM images exhibited a uniform and porous structure of the PEDOT/ErGO composite. On the other hand, the reduction of TrGO, improves the composite specific surface area. As a result, the PEDOT/ErGO composite presents much higher electrochemical response in comparison with PEDOT and PEDOT/TrGO. The electrochemical properties put them into a promising position as a potential material for energy storage devices, e.g. super capacitors, batteries and biosensors, due to the permeable film with defined pore sizes that PEDOT/ErGO showed.
KW - conducting polymers
KW - electrosynthesis
KW - ErGO
KW - PEDOT
KW - TrGO
UR - http://www.scopus.com/inward/record.url?scp=85018518153&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2017.04.076
DO - 10.1016/j.electacta.2017.04.076
M3 - Article
AN - SCOPUS:85018518153
VL - 240
SP - 155
EP - 162
JO - Electrochimica Acta
JF - Electrochimica Acta
SN - 0013-4686
ER -