Dynamic hydrogen electrode
Encyclopedia
A dynamic hydrogen electrode (DHE) is a reference electrode
, more specific a subtype of the standard hydrogen electrode
s for electrochemical processes by simulating a reversible hydrogen electrode
with an approximately 20 to 40 mV more negative potential.
and anode
.
Reference electrode
A reference electrode is an electrode which has a stable and well-known electrode potential. The high stability of the electrode potential is usually reached by employing a redox system with constant concentrations of each participants of the redox reaction.There are many ways reference...
, more specific a subtype of the standard hydrogen electrode
Standard hydrogen electrode
The standard hydrogen electrode , is a redox electrode which forms the basis of the thermodynamic scale of oxidation-reduction potentials...
s for electrochemical processes by simulating a reversible hydrogen electrode
Reversible hydrogen electrode
A reversible hydrogen electrode is a reference electrode, more specific a subtype of the standard hydrogen electrodes for electrochemical processes and differs from the standard hydrogen electrode by the fact that the measured potential does not change with the pH so that they can be directly used...
with an approximately 20 to 40 mV more negative potential.
Principle
A separator in a glass tube connects two electrolytes and a small current is enforced between the cathodeCathode
A cathode is an electrode through which electric current flows out of a polarized electrical device. Mnemonic: CCD .Cathode polarity is not always negative...
and anode
Anode
An anode is an electrode through which electric current flows into a polarized electrical device. Mnemonic: ACID ....
.
Applications
- In-situ reference electrode for direct methanol fuel cells
- Proton exchange membrane fuel cellProton exchange membrane fuel cellProton exchange membrane fuel cells, also known as polymer electrolyte membrane fuel cells , are a type of fuel cell being developed for transport applications as well as for stationary fuel cell applications and portable fuel cell applications. Their distinguishing features include lower...
s