Read about fuel cells | 5 Discussions | Page 1

  1. J

    Nernst Equation with Pressure Differences

    I'm working with the Nernst equation with pressure differences right now: ## E = E_t + \frac{RT}{nF}ln ((P/P_0)^{\Delta \eta_G})## I'm assuming pure reactants here so, so I'm omitting the product terms: ##\frac{\Pi_{products} x_i ^{\nu_i}}{\Pi_{reactants} x_i ^{\nu_i}}## which would normally...
  2. srinaath

    Why do we need to supply air to the cathode of a hydrogen fuel cell

    I am trying to understand the working of simple hydrogen fuel cell. We have anode (negative terminal), cathode (positive terminal), catalyst at anode to separate negative and positive ions of hydrogen atoms and electrolyte which allows only positive ions. We will be sending hydrogen fuel at...
  3. J

    Microbiological Fuel Cell: Negative Voltage

    Hello! I've been working on a few soil based MFCs and I have been monitoring my voltage and energy output for a week now. I've made the electrodes by covering stainless steel metal meshes with activated carbon using epoxy. I've gotten some funky results as attached. As you can see... the...
  4. N

    Fuel Cells for Isolated Electric Generation

    Hello, I am researching about fuel cells that use Ethanol as a fuel, because I want to buy a equiptment of approximate 5 Kw (Electric) that uses Ethanol as a fuel for electric generation in anyplace, where yet there is not supply of electrical Energy by wire. Have you heard anything about this...
  5. M

    Fuel Cells; PEMFC; Cause of Proton Movement

    Lately i've started learning about fuel cells, particularly proton exchange membrane fuel cells (PEMFC), and a fairly basic question that has been bugging me is: Since the cathode is positive, it is clear why the electrons flow through the load and to the cathode, but why do the...
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