Dynamic hydrogen electrode explained

A dynamic hydrogen electrode (DHE) is a reference electrode, more specific a subtype of the standard hydrogen electrodes for electrochemical processes by simulating a reversible hydrogen electrode with an approximately 20 to 40 mV more negative potential.^[1]

Principle

A separator in a glass tube connects two electrolytes and a small current is enforced between the cathode and anode.

Applications

• In-situ reference electrode for direct methanol fuel cells^{[2] [3]}
• Proton-exchange membrane fuel cells^[4]

See also

• Palladium-hydrogen electrode

Notes and References

1. http://www.corrosion-doctors.org/Dictionary/Dictionary-D.htm Dynamic hydrogen electrode
2. http://www.mpi-magdeburg.mpg.de/jobs/dipl/Study%20on%20In-situ%20Reference%20Electrode%20for%20DMFC Study on In-situ Reference Electrode for DMFC
3. http://ecsmeet6.peerx-press.org/ms_files/ecsmeet6/2009/04/22/00001789/00/1789_0_art_0_k223lr.pdf Impedance and polarization analysis of cathode and anode performance in a working direct methanol fuel cell
4. http://www.polymtl.ca/newmaterials/eng/journal/ejournal/july2007/v10n3p143.pdf Study of fuel cell corrosion processes using dynamic hydrogen reference electrodes