Welcome! Let’s grow the hydrogen economy together. Let’s grow the hydrogen community! Questions & Answers How to test the extent of ionomer/Pt interface within an electrode?

  • How to test the extent of ionomer/Pt interface within an electrode?

    Posted by Bilal iskandarani on September 26, 2022 at 07:41

    For a triple phase boundary to be acheived, there is a need to establish an ionomer/Pt boundary. How to test for the abundance of this interface?

    Roger Penn replied 1 year, 7 months ago 2 Members · 1 Reply
  • 1 Reply
  • Roger Penn

    Member
    November 15, 2022 at 16:03

    Normally use cyclic-voltammetry to measure the electrochemically active surface area (ECSA). The ECSA measures only the connected catalyst (to ionomer and carbon support), not any Pt that is not taking part in the reaction(s). For various designs, can compare the ECSA to determine how much of the Pt is being effectively used in the electrode.

Log in to reply.