Fabrication of electrochemical cells for an ionic decision-maker
This protocol is extracted from research article:
Ionic decision-maker created as novel, solid-state devices
Sci Adv, Sep 7, 2018; DOI: 10.1126/sciadv.aau2057

The procedure used for fabricating electrochemical cells for an ionic decision-maker is illustrated in fig. S1. A Nafion dispersion solution (5%; DuPont DE521) was mixed with 20 weight % platinum-loaded carbon (Vulcan XC-72). The solution was casted onto the surface of a Teflon sheet and dried in air at room temperature for about 6 hours. The resultant thin film (Nafion film with Pt-C catalyst) was transferred and hot-pressed at 413 K onto the surface of Nafion H+-conducting membrane (DuPont N-117) with a thickness of 183 μm. Pt thin film with a thickness of 80 nm was deposited onto the surface of the Nafion with a shadow mask by using electron beam deposition. The gap between the Pt electrodes was 100 μm.

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