In this work, H2O2 is electrogenerated in the cathodic compartment of a divided filter-press cell with a carbon cloth in the configuration of a gas diffusion electrode using air as the oxygen source. The effect of Teflon content was studied, and it was found that the appropriate content is within the range 10-20%. The production was greatly enhanced after the air-brushing deposition (and subsequent annealing) of simply 0.5 mg cm(-2) of carbon black. Higher additions clogged the pores and as a result were counter-productive in terms of H2O2 generation. At a current density of 25 mA cm(-2), the production rate was 15 mg of H2O2 h(-1) cm(-2) with a current efficiency close to 100%. Production rate increased with current density up to more than 40 mg of H2O2 h(-1) cm(-2) at 87.5 mA cm(-2). The good performance and ease of preparation of this electrode make it an interesting alternative to generate hydrogen peroxide for electro-Fenton processes.