The open circuit potential of hydrogen peroxide at noble and glassy carbon electrodes in acidic and basic electrolytes

Direct peroxide–peroxide fuel cell – Part 1: The anode and cathode catalyst of carbon fiber cloth supported dendritic Pd

“…5 shows the effect of H 2 O 2 concentration on the catalytic behavior of Pd/CFC electrode. The onset reduction potential was about 0.56 V and is nearly independent of the concentration of H 2 O 2 , which is in good agreement with the literature results [10]. The current density at the same potential increased significantly with the increase of H 2 O 2 concentration from 0.5 to 2.0 mol dm À3 , but the further increase of H 2 O 2 concentration from 2.0 to 2.5 mol dm À3 only leads to a slight increase of current density.…”

“…(2) and (4)) simultaneously occurring at electrode surfaces and it is more close to the equilibrium potential of H 2 O 2 electrooxidation (e.g. w0.8 V in acid and w0.1 V in alkaline at Pd electrode) [10].…”

Direct peroxide–peroxide fuel cell – Part 2: Effects of conditions on the performance

“…2, the DPPFC has an open circuit voltage (OCP) up to around 0.9 V, which is comparable with that of a hydrogen-fueled polymer electrolyte membrane fuel cell and certainly higher than that of a DMFC. The increase of KOH concentration resulted in a slight increase of the OCP, which is in good agreement with literature results [4,25]. However, the increases of KOH concentration from 2.0 to 4.0 mol L À1 did not lead to obvious enhancements in cell performance and a further increase in KOH concentration to 6.0 mol L À1 decreased performance.…”

Factors That Control Catalytic Two- versus Four-Electron Reduction of Dioxygen by Copper Complexes

“…The basics obtained here should serve as useful and broadly applicable principles for future design of catalysts for use in substrate oxidations and/or fuel cells, H 2 O 2 itself as a product having considerable potential utility. Hydrogen peroxide has attracted increasing attention as a promising candidate as a sustainable and clean energy carrier, 30–33 because the free enthalpy change of the decomposition of hydrogen peroxide producing water and dioxygen is as large as −210.71 kJ mol −1 , 34 Hydrogen peroxide has also been used as a highly efficient and environmentally benign oxidant in terms of delignification efficiency and reducing ecological impact. 35–36 …”