title: Dynamic hydrogen electrode
text: # Dynamic hydrogen electrode
  
  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.
  
  ## 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
  * Proton-exchange membrane fuel cells
  