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Voltammetry: Factors Affecting Measurements01:21

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A current produced due to the redox reactions of the analyte at the working and auxiliary electrodes is called a faradaic current. The reaction can be divided into two types. The current generated due to the reduction of the analyte is called cathodic current, and it carries a positive charge. In contrast, the current produced by analyte oxidation is known as an anodic current, and it has a negative charge. The applied potential at the working electrode determines the faradaic current flow, and...
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In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
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Hydrolysis of esters under acidic conditions proceeds through a nucleophilic acyl substitution. In the presence of excess water, the reaction proceeds in a reversible manner, forming carboxylic acids and alcohols.
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Benchmarking Catalysts for Formic Acid/Formate Electrooxidation.

Scott J Folkman1, Jesús González-Cobos2, Stefano Giancola1

  • 1Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology (BIST), Av. Paisos Catalans, 16, 43007 Tarragona, Spain.

Molecules (Basel, Switzerland)
|August 27, 2021
PubMed
Summary

Formic acid electrooxidation is key for carbon-neutral energy. This review compares catalysts and conditions for formic acid fuel cells, aiding future research.

Keywords:
CO adsorptioncatalyst benchmarkingelectrocatalysiselectrochemistryenergy storageformic acid oxidation reactionfuel cellspoisoning

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Area of Science:

  • Electrochemistry
  • Materials Science
  • Sustainable Energy

Background:

  • Addressing global energy challenges requires moving beyond fossil fuels.
  • Developing closed carbon or carbon-neutral fuel cycles is critical for reducing CO2 emissions.
  • Formic acid (FA) is a promising liquid fuel for fuel cells, with extensive research on its electrocatalytic oxidation.

Purpose of the Study:

  • To review and compare catalysts for formic acid electrooxidation.
  • To standardize the evaluation of catalysts for formic acid fuel cells.
  • To provide a benchmark for future catalyst development.

Main Methods:

  • Comprehensive literature review of formic acid electrooxidation studies.
  • Analysis of catalysts including platinum, palladium, and non-platinum group metals.
  • Focus on electrochemical parameters like onset potential, peak current density, and catalyst stability.

Main Results:

  • Variability in experimental conditions hinders direct comparison of new catalysts.
  • Key performance indicators for comparing catalysts include onset potential, peak current density, and stability.
  • A curated list of relevant examples is provided for benchmarking.

Conclusions:

  • Standardized comparison of formic acid electrooxidation catalysts is needed.
  • This review offers a framework for evaluating catalyst performance in formic acid fuel cells.
  • The identified benchmarks will guide future advancements in formic acid fuel cell technology.