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  • Devanathan-Stachurski 滲透槽

    Devanathan-Stachurski 滲透槽

    DEVANATHAN-STACHURSKI PERMEATION CELL, MODEL A
    ODEL A

    TheDevanathan-Stachurski Permeation Cell is an electrochemical double-compartment, four-electrode setup. It is typically used to investigate hydrogen permeation in steels and other alloys (diffusion constants of hydrogen in materials, density of trap sites and trap energies) as well as to evaluate ion-exchange membranes (gas diffusion coefficient/crossover, gas solubility and gas permeability typically of H2, O2, CO and H2S). Moreover, this cell can be also used with Impedance Spectroscopy to measure ionic conductivity of membrane in 2- and 4-probe setup. In the former case, a current is applied between polarizing electrodes while potential is measured across separate reference electrodes. The measurement is therefore agnostic to any side reactions occurring at the polarizing electrodes. Luggin capillaries that make an ionic connection between permeated material and reference electrode, minimize the contribution from the ohmic drop in an aqueous electrolyte. Those Luggin capillaries are located closely to the studied permeable material and outside of the current path between polarizing electrodes. The cell elements are constructed with materials that are inert to the sample (PEEK and other fluorinated plastics). It well fits aqueous (FKM O-Rings and gaskets) electrolyte requirements. An organic electrolyte version is available on request. The construction is gas tight. Reference electrodes and polarizing electrodes are not included in the setup and should be added to the quotation separately.

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  • 樣品支架

    樣品支架

    SAMPLE HOLDER 15 MM X 15 MM
    15 MM X 15 MM

    The sample holder (known also as flat specimen holder) is used for holding flat, circular or square/rectangular samples. It enables contacting the sample from the front (e.g. ITO/FTO glass, Monolayer Graphene on SiC, or Boron-Doped Diamond thin film on various substrates) and from the back (e.g. metal specimen, Glassy Carbon plate, Boron-Doped Diamond plate). The nominal aperture is 0.07cm2, but other value can be provided on request. The large electrical contact with copper foil surface (not being in contact with an electrolyte) ensures optimal current collection by minimizing electrical resistance and unifying current distribution. The rod with electrical connection has a diameter of 6 mm, which makes the sample holder compatible with our voltammetry cells and jacketed cells, as long as it fits in. We may also provide an adapter to install this sample holder in openings larger than 6 mm dia.
    The sample holder elements are constructed with materials that are inert to the electrochemical system (PEEK). It well fits aqueous (FKM/EPDM O-Rings) and organic solvent (FFKM O-Rings) electrolyte requirements. The construction is well sealed which prevents the electrolyte to leak inside.

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  • 帶支架的鉑金塗層鈦網電極

    帶支架的鉑金塗層鈦網電極

    PLATINUM COATED TITANIUM MESH ELECTRODE WITH HOLDER
    一套10個

    The metal counter (auxiliary) electrode is provided in electrochemical cell as a current sink to shunt excess current away from the reference electrode. Platinum Coated Titanium Mesh Electrode is a cheap alternative to pure Platinum Electrodes like Platinum Gauze Electrode or Metal Wire Auxiliary Electrode. Platinum coating makes this counter electrode inert under the reaction conditions and provides catalytic properties. The electrode is installed in the Basic Sample Holder (1 pcs included in the set), which allows full immersion of the electrode in the electrolyte (wet Tantalum contact). It well fits aqueous and organic solvent electrolyte requirements. Electrode size is customizable. 

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