Battery Testing Methods in Fuel Cell Research

TL;DR

This paper reviews key laboratory electrochemical testing methods used in fuel cell research, detailing procedures and the type of information they provide about electrode reactions and material properties.

Contribution

It systematically describes electrochemical testing techniques like voltammetry and impedance spectroscopy specific to fuel cell electrode analysis.

Findings

Provides detailed protocols for electrochemical tests.

Highlights how data informs on reaction kinetics and material durability.

Connects testing methods to fuel cell performance insights.

Abstract

This report presents some of the key laboratory electrochemical battery testing methods that are used in fuel cell research. Methods such as voltammetry, chronoamperometry, chronopotentiometry, and electrochemical impedance spectroscopy are of major importance. All the electrochemical corrosion tests are performed through a tri-electrode polarization cell setup containing a reference electrode, a counter electrode, and the working electrode (metal sample of interest) in an electrolyte solution. All three electrodes are connected to a potentiostat. Corrosion of metal occurs through an oxidation-reduction (redox) reaction. All the above testing methods can be performed by manipulating the current and voltage responses from the cell. Potentiostatic experiments (voltammetry and chronoamperometry) are performed using constant potential at the working electrode and recording the current response while galvanostatic experiments (chronopotentiometry) and vice versa. The measured data through all these experiments can provide very useful information regarding reaction reversibility, diffusion coefficient, reduction potential, rate of chemical reaction, durability, adsorption, voltage losses, and effective resistance to the mass and charge transport offered by electrode material.