Molten salt medium synthesis of wormlike platinum silver nanotubes without any organic surfactant or solvent for methanol and formic acid oxidation

2015 ◽  
Vol 17 (46) ◽  
pp. 31170-31176 ◽  
Author(s):  
Haidong Zhao ◽  
Rui Liu ◽  
Yong Guo ◽  
Shengchun Yang
Keyword(s):  
Fuel Cell ◽  
Formic Acid ◽  
Molten Salt ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Salt Medium ◽  
Organic Surfactant ◽  
Silver Nanotubes ◽  
Pt Black

Wormlike PtxAgy nanotubes (NTs) were synthesized in a molten salt media without using any organic surfactant or solvent. They presented a enhanced performance in fuel cell catalysis compared with that of the Pt black.

Electrocatalysis of formic acid on palladium and platinum surfaces: from fundamental mechanisms to fuel cell applications

2014 ◽  
Vol 16 (38) ◽  
pp. 20360-20376 ◽  
Author(s):  
Kun Jiang ◽  
Han-Xuan Zhang ◽  
Shouzhong Zou ◽  
Wen-Bin Cai
Keyword(s):  
Fuel Cell ◽  
Formic Acid ◽  
Recent Progress ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Mechanistic Studies ◽  
Practical Applications ◽  
Platinum Surfaces ◽  
Formic Acid Fuel Cells ◽  
Oxidation Synthesis

A brief overview is presented on recent progress in mechanistic studies of formic acid oxidation, synthesis of novel Pd- and Pt-based nanocatalysts and their practical applications in direct formic acid fuel cells.

scholarly journals A low temperature aqueous formate fuel cell using cobalt hexacyanoferrate as a non-noble metal oxidation catalyst

2020 ◽  
Vol 4 (12) ◽  
pp. 6227-6233
Author(s):  
Lijuan Han ◽  
Jesús González-Cobos ◽  
Irene Sánchez-Molina ◽  
Stefano Giancola ◽  
Scott J. Folkman ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Low Temperature ◽  
Formic Acid ◽  
Prussian Blue ◽  
Formic Acid Oxidation ◽  
Oxidation Catalyst ◽  
Acid Oxidation ◽  
Metal Oxidation ◽  
Metal Free ◽  
Cobalt Hexacyanoferrate

Prussian blue is applied as the anode in the first reported metal-free fuel cell for formic acid oxidation.

scholarly journals Electrochemical properties of mixed WC and Pt-black powders

2008 ◽  
Vol 73 (12) ◽  
pp. 1197-1209 ◽  
Author(s):  
Maja Obradovic ◽  
Biljana Babic ◽  
Andrzej Kowal ◽  
Vladimir Panic ◽  
Snezana Gojkovic
Keyword(s):  
Formic Acid ◽  
Tungsten Oxide ◽  
Electrochemical Oxidation ◽  
Formic Acid Oxidation ◽  
Spherical Particles ◽  
Acid Oxidation ◽  
Electrochemical Characteristics ◽  
Oxidation Of Methanol ◽  
Average Size ◽  
Pt Black

The electrochemical characteristics of a mixture of Pt-black and WC powders and its catalytic activity for methanol and formic acid oxidation were investigated in acid solution. XRD and AFM measurements revealed that the WC powder employed for the investigation was a single-phase material consisting of crystallites/spherical particles of average size of about 50 nm, which were agglomerated into much larger particles. Cyclic voltammetry showed that the WC underwent electrochemical oxidation, producing tungstate species. In the case of the mixed Pt + WC powders, the tungstate species were deposited on the Pt as a thin film of hydrous tungsten oxide. Enhanced hydrogen intercalation in the hydrous tungsten oxide was observed and it was proposed to be promoted in mixed powders by the presence of hydrogen adatoms on bare Pt sites. The determination of Pt surface area in the Pt + WC layer by stripping of underpotentially deposited Cu revealed that the entire Pt surface was accessible for underpotential deposition of Cu. Investigation of the electrochemical oxidation of methanol and formic acid on Pt + WC and pure Pt layers did not indicate electrocatalytic promotion due to the presence of WC.

Formic acid oxidation by carbon-supported palladium catalysts in direct formic acid fuel cell

2008 ◽  
Vol 25 (5) ◽  
pp. 1026-1030 ◽  
Author(s):  
Jae Ho Choi ◽  
Soon Young Noh ◽  
Sam Duck Han ◽  
Soo Kyung Yoon ◽  
Chang-Soo Lee ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Formic Acid ◽  
Palladium Catalysts ◽  
Formic Acid Oxidation ◽  
Acid Oxidation ◽  
Supported Palladium Catalysts ◽  
Supported Palladium

Technical and Economic Evaluation of a Formic Acid/Hydrogen Peroxide Fuel Cell System With Pt-M/C as Anode Catalyst

2011 ◽  
Vol 8 (6) ◽  
Author(s):  
W. Sangarunlert ◽  
S. Sukchai ◽  
A. Pongtornkulpanich ◽  
A. Nathakaranakule ◽  
T. Luschtinetz
Keyword(s):  
Hydrogen Peroxide ◽  
Fuel Cell ◽  
Formic Acid ◽  
Bimetallic Catalysts ◽  
Linear Sweep Voltammetry ◽  
Formic Acid Oxidation ◽  
Cell System ◽  
Cell Performance ◽  
Acid Oxidation ◽  
Anode Catalysts

Cell performance of formic acid/hydrogen peroxide (HCOOH/H2O2) fuel cell, using commercial Pt-Ru/C, and prepared Pt-M/C (M = Ir, Mo, Co, Ag, W, Ni, Sn) bimetallic catalysts as anode catalysts are experimentally investigated and reported in this paper. Corresponding to cell performance, electrocatalytic activity of the system using commercially available and prepared catalysts is evaluated by linear sweep voltammetry technique (LSV). The result shows that the system using 20%Pt-10%Sn/C yields better formic acid oxidation reaction than that of other Pt-M/C bimetallic catalysts, but it is inferior to that of 20%Pt-10%Ru/C commercial catalyst. In addition, the cell performance of HCOOH/H2O2 fuel cell with various catalyst compositions of Pt and Sn content, in portions of 10:20, 15:15, and 20:10, respectively, is also studied. Comparison among those catalysts, 15%Pt-15%Sn/C yields better cell performance than the others. Levelized energy cost (LEC) and sensitivity analysis on LEC are also assessed.

NANOELECTROCATALYSTS BASED PALLADIUM FOR FUEL CELLS WITH DIRECT OXIDATION OF FORMIC ACID

2019 ◽  
Vol 6 (3) ◽  
pp. 104-107
Author(s):  
Marina Vladimirovna Lebedeva ◽  
Alexey Petrovich Antropov ◽  
Alexander Victorovich Ragutkin ◽  
Nicolay Andreevich Yashtulov
Keyword(s):  
Formic Acid ◽  
Palladium Nanoparticles ◽  
Oxidation Reaction ◽  
Electrode Materials ◽  
Formic Acid Oxidation ◽  
Energy Sources ◽  
Acid Oxidation ◽  
Direct Oxidation ◽  
Atomic Force ◽  
Formic Acid Oxidation Reaction

In paper electrode materials with palladium nanoparticles on polymer matrix substrates for energy sources have been formed. Nanocomposites were investigated by atomic force and scanning electron microscopy. The catalytic activity of formed electrodes in the formic acid oxidation reaction was evaluated by voltammetry method.

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