Journal
CHEMELECTROCHEM
Volume 2, Issue 5, Pages 714-719Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/celc.201402426
Keywords
alkaline medium; carbon black; gas diffusion electrode; hydrogen peroxide; oxygen reduction reaction
Categories
Funding
- SAo Paulo Research Foundation (FAPESP) [2011/06681-4, 2011/00535-6, 2013/06682-6]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Fonds de Recherche du Quebec-Nature et Technologies (FRQNT)
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [13/06682-6, 11/06681-4] Funding Source: FAPESP
Ask authors/readers for more resources
Hydrogen peroxide (H2O2) is an oxidizing agent commonly used for various applications and is available in aqueous solution in a wide range of concentrations. This work describes the H2O2 electrogeneration process in alkaline medium (KOH 1.0 mol L-1), using an unmodified gas diffusion electrode (GDE) manufactured with Printex 6L carbon. The experiments were performed in a single-compartment electrochemical cell equipped with a GDE as the working electrode, which was fed with N-2 or O-2 at a pressure of 0.2bar. Electrolysis experiments were performed at a constant potential (-0.5 <= E <=-1.4V) for 90min. The H2O2 concentration reached a maximum value of 3370mgL(-1) at -1.1V (vs. Ag/AgCl), and H2O2 electrogeneration followed pseudo-zero-order kinetics with an apparent rate constant k(app)=59.7mgL(-1) min(-1). A low energy consumption of 8.0 kWh kg(-1) was calculated for these electrogeneration conditions.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available