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Biocarbons for energy conversion and storage: DEFCS and supercapacitors applications

A. Cuña, E. L. da Silva, M. R. Ortega, C. Radtke, N. Tancredi, S. C. Amico, Malfatti

2016/5/20

Abstract

Activated biocarbons (aBCs) and activated biocarbon monoliths (aBCMs) were obtained by several procedures in order to study their behaviour as PtSn support for ethanol electro-oxidation, and also for use as an electrode in supercapacitors. The textural and chemical properties of the materials were correlated with the electrochemical behaviour. The prepared E. grandis wood based biocarbon materials, have good qualities for use as PtSn catalyst support for DEFCs, and in supercapacitor electrode application. The micropore size and the content of oxygenated functional group have direct incidence on the distribution of the catalyst particles on the aBCs
support surface. In consequently, the electrocatalytic behaviour of the PtSn/aBC is affected. The content of oxygenated functional groups also has a marked effect on the supercapacitors electrode behaviour. It wasdemonstrated that these functional groups are actively involved in the energy storage by the pseudocapacitive phenomenon. The nitric acid treatment is a good method
to generate these functional groups on the aBCMs.

Published in: Renewable Energy & Power Quality Journal (RE&PQJ, Nº. 14)
Pages:210-215 Date of Publication: 2016/5/20
ISSN: 2172-038X Date of Current Version:2016/05/04
REF:270-16 Issue Date: May 2016
DOI:10.24084/repqj14.270 Publisher: EA4EPQ

Authors and affiliations

A. Cuña(1,2), E. L. da Silva(2), M. R. Ortega(2), C. Radtke(3), N. Tancredi(1), S.C. Amico(4), C. Malfatti(2)
1. Cátedra de Fisicoquímica, DETEMA, Facultad de Química, Universidad de la República. Montevideo. Uruguay
2. LAPEC/PPGE3M, Universidade Federal do Rio Grande do Sul, Porto Alegre/RS. Brazil
3. Instituto de Química, Universidade Federal do Rio Grande do Sul Porto Alegre/RS. Brazil
4. LAPOL/DEMAT, Universidade Federal do Rio Grande do Sul. Brazil

Key words

Energy conversion, Energy storage, Direct Ethanol Fuel Cells, Supercapacitor, Biocarbons

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