Working Electrode

Working Electrodes for Electrochemical Measurements

Introduction

Working electrodes are the primary reaction interface in electrochemical cells, where charge transfer, adsorption, and catalysis occur. ScienceGears supplies research-grade electrodes across common geometries—disc, plate, L-type, carbon paste, and rod—machined for reproducibility and compatibility with standard holders and potentiostats used in voltammetry, EIS, and related techniques.

Key Features & Specifications

• Geometries: Disc, L‑type, plate, and rod formats for benchtop cells and fixtures.
• Disc diameters (representative): Glassy carbon up to 20 mm; gold 0.5–6 mm; platinum 0.5–6 mm.
• L‑type diameters: Glassy carbon and gold in 2, 3, and 5 mm formats.
• Plate options: Typical plates include GC 10 × 10 × 2 mm and Pt 10 × 10 × 0.1 mm.
• Rod options: Precision rod electrodes for versatile probing and custom assemblies.
• Compatibility: Suitable for standard electrode holders, RRDE systems, polishing kits, and ScienceGears potentiostats/bi‑potentiostats.
• Customisation: Tailor‑made sizes and materials available on request.

Applications

• Fundamental electrochemistry: CV, LSV, DPV, SWV on metals, semiconductors, and carbon.
• Electrocatalysis and energy: HER/OER, CO2RR, ORR/ORR‑RRDE, battery materials screening.
• Corrosion and passivation studies using plate and disc surfaces.
• Sensors and surface modification: Functional films, biointerfaces, and analytical assays.
• Impedance and kinetics: EIS and charge‑transfer analysis of electrodes and coatings.

Material Options

• Glassy Carbon (GC): Chemically inert, wide potential window, excellent for general voltammetry and surface modification; offered across disc, L‑type, plate formats.
• Platinum (Pt): Inert, catalytically active, ideal for redox standards and electrocatalysis; available in discs and thin plates.
• Gold (Au): Biocompatible surface chemistry and SAM formation for biosensing; supplied in disc and L‑type sizes.
• Graphite/Carbon Paste: Economical, renewable surfaces for modifier studies and teaching labs.

Advantages of Buying from ScienceGears

• Expert support from PhD‑trained scientists with application‑level guidance.
• Full electrochemistry ecosystem: potentiostats, RRDE, polishing kits, and cells for complete workflows.
• AU/NZ fulfilment and quote‑driven procurement for universities and industry.

FAQs

1. Which diameter should I choose for CV?
   3–5 mm discs are common for routine CV due to balanced current and iR control; larger diameters suit corrosion and coating studies.
   
   
2. When do I use L‑type electrodes?
   L‑types are convenient in compact cells and fixtures where vertical clearance or cable routing is constrained.
   
   
3. Do I need an RRDE for ORR studies?
   RRDE enables product detection and kinetic analysis; pair with a bi‑potentiostat and appropriate ring material.
   
   
4. How do I maintain reproducibility?
   Use consistent polishing protocols and slurries and verify with EIS or standard redox probes.
   
   

Call to Action
Ready to configure your working electrode? Request a quote with your material, geometry, and size requirements, or contact our team for application‑specific guidance.