A new generation of electrochemical supercapacitors based on layer-by-layer polymer films

Autor(es)

Christinelli, Wania Ap. ^[1] ; Goncalves, Roger ^[1] ; Pereira, Ernesto C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Chem, CP 676, BR-13560970 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Power Sources; v. 303, p. 73-80, JAN 30 2016.
• Citações Web of Science: 20

Resumo

Here we report supercapacitors fabricated with the layer-by-layer (LBL) technique using two polymers, namely poly(o-methoxyaniline) (POMA) and poly(3-thiophene acetic acid) (PTAA). The electrochemical performances of POMA/PTAA supercapacitors were characterized by cyclic voltammetry and electrochemical impedance spectroscopy. The results were compared with POMA casting film. The specific capacitance of LBL films increases almost linearly with a number of bilayers which were not observed for POMA casting films. The results of this investigation demonstrate that the self-doping effect between POMA and PTAA can change the properties on films and can be successfully used as a supercapacitor technology. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais
• Beneficiário: Elson Longo da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 11/10897-2 - Caracterização dos processos redox e do envelhecimento eletroquímico de filmes automontados de polímeros condutores
• Beneficiário: Wania Aparecida Christinelli
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto