A feasibility analysis for alkaline membrane direct methanol fuel cell: thermodynamic disadvantages versus kinetic advantages

Fe/Fe3C/N‐Doped Carbon Materials from Metal–Organic Framework Composites as Highly Efficient Oxygen Reduction Reaction Electrocatalysts

“…Given the stronger methanol tolerance of Fe/NC catalysts, it can be concluded that they are more suitable than Pt/C in alcohol-fueled energy conversion devices such as alkaline direct methanol fuel cells (ADMFCs). [21] Electrochemical impedance spectroscopy (EIS; Figure 4e) and Tafel plots derived from CLSVs ( Figure 4f) were obtained to better understand the ORR activity of Fe/NCs. The Nyquist plots collected at E = 0 V indicate that Fe/NC800 has the smallest charge-transfer resistance (R ct ) among all Fe/NCs and it is also comparable to that of Pt/C.…”

A Vital Source of Energy for 21st Century: Review On Alkaline Fuel Cell

“…In search of suitable electrode (Morallon et al, 1995;Tripkovic et al, 2001;Wang et al, 2003) studied the methanol electro-oxidation on Pt in carbonate, bicarbonate and NaOH solution to compare the result. They have found that the methanol oxidation on Pt (111) catalyst is slower in bicarbonate and carbonate solution than in NaOH solution.…”

“…They have shown that equimolar mixture of methanol and KOH give the maximum current densities. Wang et al (2003) also used anion exchange membrane for the feasibility analysis of direct methanol fuel cell in the presence of carbonate and bicarbonate solution Cohen et al (2005;Verma et al, 2005b) introduced a dual electrolyte H 2 /O 2 fuel cell system employing a planar microfluidic membraneless fuel cell and compared to single electrolyte H 2 /O 2 systems under analogous conditions. The fuel is H 2 dissolved in 0.1 M KOH (pH 13) and the oxidant is O 2 dissolved in 0.1 M H 2 SO 4 (pH 0.9), comprising a system with a calculated thermodynamic potential of 1.943 V (when I M H 2 and O 2 concentrations are assumed).…”

Alkaline Anion Exchange Membranes for Fuel Cells- A Patent Review

“…However, the true extent and mechanism of how CO 2 affects the performance of APEMFC remains to be fully investigated. There are numerous hypotheses for the cause of the performance losses with the use of air at the cathode of APEMFCs: Are these performance losses due to (i) pH gradient (high at cathode, lower at anode) derived thermodynamic losses, (ii) reductions in ionic conductivity of the AAEM or alkaline ionomer, (iii) CO 3 2-/HCO 3 -anions interfering with the hydrogen oxidation electrode kinetics on the Pt catalyst at the anode (as mentioned above, the oxygen reduction reaction at the cathode appear less affected by the presence of these ions), and (iv) an effect on the water diffusion with the additional presence of nitrogen [176,[182][183]. Such investigations are an immediate research priority.…”