Nanosized Mo-doped CeO₂ enhances the electrocatalytic properties of the Pt anode catalyst in direct methanol fuel cells

Abstract

A novel Pt/Ce0.7Mo0.3O2−δ–C electrocatalyst has been developed for methanol oxidation. A direct methanol fuel cell integrating this catalyst as the anode catalyst showed superior power density compared to that with a state-of-the-art commercial Pt/C-JM catalyst.

Nanohybrid layered double hydroxide materials as efficient catalysts for methanol electrooxidation

“…10,11 Platinum based catalysts have a unique electrocatalytic activity for promoting methanol oxidation. 12,13 However, they are very expensive which limits their use. 14 Therefore, current research has been directed to improve the activity of methanol electro-oxidation catalysts with reduced precious metals.…”

Cu assisted loading of Pt on CeO2 as a carbon-free catalyst for methanol and oxygen reduction reaction

“…37,38 The ratio I f : I b is used to evaluated the MOR performance of catalyst, i.e., larger I f : I b represents better poisoning tolerance and vice versa. 39 All PtCu/CeO 2 catalysts have higher I f : I b than Pt/C, illustrating the better poison tolerance of PtCu/CeO 2 . As shown in Table 1, PtCu/CeO 2 -21 has the highest I f : I b value of 1.27, which is 1.4 times higher than 0.92 of Pt/C.…”

Synergistic Supports Beyond Carbon Black for Polymer Electrolyte Fuel Cell Anodes

“…Further, this kind of electronic interaction can be further reinforced by modulation of CeO 2 with heteroatoms. A straightforward route is to dope CeO 2 with transition elements with CO‐tolerance property, e. g. Mo or W. Mo‐doped CeO 2 (Ce 1–x Mo x O 2 ) solid solution was lately synthesized by a simple single‐step hydrothermal method . The negative surface charges of the support were obtained by regulation over pH value, which makes for the subsequent deposition and dispersion of Pt NPs under such strong electrostatic interaction.…”