Electrocatalysis in Other Direct Liquid Fuel Cells

Determining overpotentials for the oxidation of alcohols by molecular electrocatalysts in non-aqueous solvents

“…50,51 For comparison, Pt/Ru alloys are among the most active heterogeneous catalysts for oxidation of alcohols and have been widely studied in direct methanol fuel cells. [52][53][54][55] Under the acidic conditions typical for proton-exchange membrane fuel cells, these alloys exhibit overpotentials as low as 0.3 V for conversion of MeOH to CO 2 . 53 Unfortunately, these catalysts are poisoned by aldehydes and carboxylic acids, limiting their utility with alcohol substrates containing C-C bonds.…”

Performance of direct formic acid fuel cell using transition metal‐nitrogen‐doped carbon nanotubes as cathode catalysts

“…3,[29][30][31] Formic acid tolerance was measured using Pt and Ru x Se y deposited onto the oxide-carbon composite substrate (TiO 2 /C) in the study conducted by L. Timperman et al 31 The formic acid tolerance was better in the Ru x Se y /C catalyst when compared with that in the Ru x Se y /TiO 2 /C catalyst. 33 As mentioned previously, the DMFC performance using the NPMC remains low in case of the cathode even though numerous studies have investigated the NPMC cathode catalyst, exhibiting high methanol tolerance. Carbon-supported cobalt selenite (CoSe/C) was studied by P.Nekooi 29 and showed almost full tolerance toward formic acid even though the ORR activity was lower than the Pt/C catalyst.…”

“…Because the cathode reaction of DMFC is similar to that of DFAFC, any improvements to the DMFC cathode should be applicable to the DFAFC cathode. 33 As mentioned previously, the DMFC performance using the NPMC remains low in case of the cathode even though numerous studies have investigated the NPMC cathode catalyst, exhibiting high methanol tolerance. In this study, we apply NPMC to the DFAFC cathode to achieve a high-performance DLFC using NPMC in the cathode.…”

Electrooxidation of cardanol on mixed metal oxide (RuO2-TiO2 and IrO2-RuO2-TiO2) coated titanium anodes: insights into recalcitrant phenolic compounds

“…from the water oxidation [23][24][25]. In fact, Ti/TiO2-RuO2-IrO2 showed good performance for the oxygen production (+1.05 V vs. Ag/AgCl/Clsat) respect to Ti/TiO2-RuO2 anode (+1.20 V vs. Ag/AgCl/Clsat).…”

“…Increasing the j, a significant improvement in the electrodegradation rate was achieved, for both anodes. The electrodegradation kinetic constant (k; min -1 ) can be obtained by applying the follow equation [23][24][25][26]:…”