TY - JOUR

T1 - MWCNT buckypaper/polypyrrole nanocomposites for supercapasitor application

AU - Iurchenkova, A. A.

AU - Fedorovskaya, E. O.

AU - Asanov, I. P.

AU - Arkhipov, V. E.

AU - Popov, K. M.

AU - Baskakova, K. I.

AU - Okotrub, A. V.

N1 - Funding Information: The work was supported by the Ministry of Education and Science of the Russian Federation (project 11.7873.2017/8.9). The TEM was performed on the equipment of CKP “VTAN” in ATRC department of NSU. Publisher Copyright:© 2020 Elsevier Ltd

PY - 2020/3/1

Y1 - 2020/3/1

N2 - In this work MWNT/polypyrrole nanocomposites were synthesized and investigated as electrode materials for supercapasitor application. The MWNT were synthesized by CCVD-method and precipitated as buckypaper film (NTBP). The polypyrrole was precipitated on the NTBP surface by chemical (sample NTBP_PPy_Chem) and electrochemical (sample NTBP_PPy_Elect) polymerization. The morphology and functional composition of individual and hybrid materials were investigated by microscopic and spectroscopic methods. It was obtained that the deposition method and presence of NTBP affects the polymer morphology. It was shown that PPy chemical deposition leads to the precipitation of a large amount of an amorphous polymer on a buckypaper surface. At the same time electrochemical deposition method promotes the synthesis of uniform polymer layers. In the second case, the mass of the precipitated polymer is smaller. It was found that both deposition methods are suitable for the polypyrrole deposition and can increase the buckypaper capacity almost twice. The material long cycling showed that the NTBP_PPy_Elect sample has the greatest stability. Thus, in this study, the relationship between morphology, functional composition and electrochemical properties of materials was studied. It was shown that the synthesis method allows controlling the morphology and/or functional composition of the materials. Also it was demonstrated that the synthesized structures are promising for use as supercapacitor electrodes due to the high specific capacitance and stability.

AB - In this work MWNT/polypyrrole nanocomposites were synthesized and investigated as electrode materials for supercapasitor application. The MWNT were synthesized by CCVD-method and precipitated as buckypaper film (NTBP). The polypyrrole was precipitated on the NTBP surface by chemical (sample NTBP_PPy_Chem) and electrochemical (sample NTBP_PPy_Elect) polymerization. The morphology and functional composition of individual and hybrid materials were investigated by microscopic and spectroscopic methods. It was obtained that the deposition method and presence of NTBP affects the polymer morphology. It was shown that PPy chemical deposition leads to the precipitation of a large amount of an amorphous polymer on a buckypaper surface. At the same time electrochemical deposition method promotes the synthesis of uniform polymer layers. In the second case, the mass of the precipitated polymer is smaller. It was found that both deposition methods are suitable for the polypyrrole deposition and can increase the buckypaper capacity almost twice. The material long cycling showed that the NTBP_PPy_Elect sample has the greatest stability. Thus, in this study, the relationship between morphology, functional composition and electrochemical properties of materials was studied. It was shown that the synthesis method allows controlling the morphology and/or functional composition of the materials. Also it was demonstrated that the synthesized structures are promising for use as supercapacitor electrodes due to the high specific capacitance and stability.

KW - CCVD synthesis

KW - MWCNT buckypaper

KW - Polypyrrole

KW - Supercapacitor

KW - TEM

KW - ELECTROCHEMICAL PROPERTIES

KW - POLYPYRROLE

KW - COMPOSITE-MATERIALS

KW - CARBON NANOTUBES

KW - SUPERCAPACITOR PERFORMANCE

KW - TRANSPORT

KW - FILMS

KW - ELECTRODE

KW - XPS

KW - FABRICATION

UR - http://www.scopus.com/inward/record.url?scp=85077921451&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2020.135700

DO - 10.1016/j.electacta.2020.135700

M3 - Article

AN - SCOPUS:85077921451

VL - 335

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

M1 - 135700

ER -