Tailor-designed nanowire-structured iron and nickel oxides on platinum catalyst for formic acid electro-oxidation

Abstract

A FeOx/NiOx/Pt catalyst was recommended for formic acid electro-oxidation; the essential anodic reaction in direct formic acid fuel cells.

Platinum-Decorated Amorphous Sulfurized Palladium Nanowires for Effective Ethanol Oxidation Reaction

“…The CO oxidation peaks can be divided into other neighboring peaks located at −0.442 V vs SCE. This double CO oxidation peak can be attributed to the different active sites due to the construction of heterostructures. , The multiple types and abundant surface reaction-active sites make a-Pd(S)NWs/Pt a promising electrocatalyst for EOR applications. To further confirm the CO tolerance in a harsher condition for the as-prepared catalysts and their commercial counterparts, the pure CO gas was deliberately employed and bubbled onto the catalyst’s surface for 10 s during the chronoamperometric measurements at −0.25 V vs SCE .…”

Boosted formic acid electro-oxidation on platinum nanoparticles and “mixed-valence” iron and nickel oxides

“…15 Finally, the as-prepared electrode was activated by cycling the potential between −1 and 0.6 V at a scan rate of 200 mV s −1 for 25 cycles in 0.5 mol L −1 NaOH solution. 26,30 The electrodeposition process of the nano-FeO x was carried out in 0.02 mol L −1 FeSO 4 ·7H 2 O aqueous solution by running a two-cycle potential scan between −0.855 and −1.205 V at a scan rate of 100 mV s −1 , 33–35 followed by an activation step for the electrodeposited nano-FeO x by holding the applied voltage at −0.5 V for 10 min in 0.2 mol L −1 NaOH solution.…”

“…The modification of nano-Pt with nano-NiO x and/or nano-FeO x was planned from their excellent catalytic characteristics toward the oxidation of small organic molecules. 6,31–33 Interestingly, with this modification, the catalyst's cost was reduced by lowering the Pt content, and the catalyst's activity toward FAO was boosted with a longer lifetime and a remarkable tolerance against CO poisoning, which are the requirements to enhance the performance of DFAFCs.…”

Efficient Electro-Oxidation of 2-Propanol at Platinum- and Gold-Modified Palladium Nanocatalysts

“…To address these concerns, cost-efective, clean, and renewable energy sources that could be used as viable substitutes for fossil fuels are urgently needed [5][6][7][8][9]. Energy storage and conversion devices have received worldwide interest as a key step toward using renewable energy resources as primary energy sources, and it has become necessary to thoroughly examine the various promising energy conversion and storage solutions, such as fuel cells (FCs) [10][11][12][13][14][15][16][17][18][19], and embark on their implementation [3,12]. In this regard, the direct alcohol fuel cells, such as the direct 2-propanol FCs (D2PFCs), appeared as excellent candidates [20][21][22][23][24][25][26].…”