Potentiostat / Galvanostat / ZRA Gamry Reference 3020 – Auxiliary Electrometer (AE)
Potentiostat / Galvanostat / ZRA Gamry Reference 3020 – Auxiliary Electrometer (AE)
The High-End Reference 3020AE potentiostat/galvanostat/ZRA with eight additional auxiliary electrometers (AE)With the eight additional channels provided by the Auxiliary Electrometer (AE) option for the Reference 3020 potentiostat / galvanostat / ZRA, potential differences can be measured across up to 8 half-cells in a stack. Each of the eight available electrometers (± 5 V vs. counter electrode potential) can characterise a half-cell in terms of its impedance during an electrochemical impedance spectroscopy measurement performed across the entire stack. This useful feature was developed specifically for energy storage and conversion applications to better characterise their diverse side and loss processes.
Product Description
The Reference 3020AE Potentiostat / Galvanostat / ZRA is a high performance potentiostat, galvanostat, ZRA that offers considerable operating speed, a very wide current measurement range, low noise / hum, high sensitivity and unrivalled versatility with ease of use and connectivity to a wide range of electrochemical cells. The Reference 3020AE Potentiostat / Galvanostat / ZRA can measure by sample impedance and frequency range with less than 1% error. It has rise times of 250 ns. Potential, current and an additional measurement input can be recorded with a data density of up to 3.3 µs per data point.
These impressive analogue and digital characteristics enable, for example, impressive theoretical scan rates of 1200 V∙s-1 for cyclic voltammograms with a step height of 4mV. In addition, the noise and hum in the Reference 3020 potentiostat / galvanostat / ZRA is conservatively specified at < 10 µV rms, and can be reduced even further by oversampling (fast sampling and averaging).
The Reference 3020 Potentiostat / Galvanostat / ZRA offers an adjustable potential of max. ± 32 V at the working electrode. With these hardware specifications, measurements can be made even in electrolytes with very low conductivity (high-purity water; concrete, organic electrolytes, etc.). The current at the working electrode is applied with a cable (working), while the potential is measured with a separate cable (working sense). Together with the cables for the counter electrode (Counter) and the reference electrode (Reference sense), four-wire measurements on batteries, membranes or films are easily possible while minimising the lead and connection resistances. In addition to the potentiostatic and galvanostatic measurement mode, the system offers the function of a zero resistance current meter (ZRA) for the observation of galvanic corrosion (bimetallic corrosion / contact corrosion) and the measurement of electrochemical noise.
For electrochemical measurements on earthed cells or cells with a working electrode in electrical contact with an earthed electrode through a conductive medium, e.g. in autoclaves, in connection with a tensile test in materials testing or on pipelines, a device with a floating mass is required. The Reference 3020AE Potentiostat / Galvanostat / ZRA offers this without additional modification or options at extra cost. The floating earth of the Reference 3020AE Potentiostat / Galvanostat / ZRA and all other Gamry potentiostats is realised by external switched-mode power supplies for the power supply, an additional internal switched-mode power supply with galvanic isolation and an opto-electronically decoupled USB connection.
Direct Digital Synthesis (DDS) circuits and sub-harmonic sampling are used for electrochemical impedance spectroscopy so that spectra between 1 MHz and 10 µHz can be recorded. In conjunction with the high number of current measurement ranges, this enables precise determination of impedances between 1012 Ω and 10-3 Ω.
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Specifications
DIMENSIONS (cm) 20 (W) x 21 (H) x 28 (D)SYSTEM
Working electrode potential (max.) ± 12 V / ± 32 V
Max. current ± 3000 mA / ± 1500 mA
Number of current measurement ranges with internal amplification 13 (3 pA – 3000 mA)
Input resistance >10¹⁴ Ω / > 10¹¹ Ω
Frequency range for EIS measurements 10 µHz – 1 MHz
Temperature measurement: Type K thermocouple
iR COMPENSATION
Current Interrupt (CI) method up to approx. 20 mV/s
Static pre-compensation (Positive Feedback; PF) for fast scans
GROUNDING
Floating ground / grounding via the housing optionally possible
AUXILIARY ELECTROMETER
Ranges (within +36 V to –36 V vs. floating ground)
±50 mV, ±500 mV, ±5 V (-[yellow] vs. +[purple])
Input current < 10 pA
Options and Accessories
Measurement cells and accessories:
• Reference 3020 bipotentiostat
• ECM8
• RDE710
• eQCM15M
• EuroCell
• Flexcell
• Lithium Battery Materials Cell
• Low Inductance Battery Holder (Dual-CR2032 / Dual-18650)
Applications
– Basics of Electrochemical Impedance Spectroscopy [Link AN 5657]
– Equivalent Circuit Modelling in EIS [Link AN 5658]
– Comparison of Corrosion Rates Calculated by EFM, LPR and EIS [Link AN 5660]
– Tsujikawa-Hisamatsu-Electrochemical (THE) Method for Crevice Corrosion Repassivation Potentials [Link AN 5671]
– Basics of Electrochemical Corrosion Measurements [Link AN 5677]
– EIS Measurement of a Very Low Impedance Lithium Ion Battery [Link AN 5682]
– Steps for Creating an Application Using GamryCOM [Link AN 5687]
– Electrochemical Impedance at a Rotating Disk Electrode [Link AN 5695]
– Measuring the Impedance of Your Reference Electrode [Link AN 5697]
– Testing Supercapacitors: Part 1 – CV, EIS and Leakage Current [Link AN 5710]
– Demystifying Transmission Lines: What are they? Why are they useful? [Link AN 5711]
– Basics of a Quartz Crystal Microbalance [Link AN 5717]
– OptiEIS™ – A Multisine Implementation [Link AN 5718]
– Testing Supercapacitors: Part 2 – CCD and Stacks [Link AN 5724]
– Low-impedance EIS at Its Limits: Gamry Reference 30k Booster [Link AN 5725]
– Calibration of an Au-coated Quartz Crystal [Link AN 5727]
– EQCM Investigations of a Thin Polymer Film [Link AN 5728]
– Measuring Surface-Related Currents using Digital Staircase Voltammetry [Link AN 5731]
– Testing Supercapacitors: Part 3 – Electrochemical Impedance Spectroscopy [Link AN 5732]
– Monitoring Layer-by-Layer Assembly of Polyelectrolyte Film using a Quartz Crystal Microbalance [Link AN 5736]
– Characterisation of a Supercapacitor using an Electrochemical Quartz Crystal Microbalance [Link AN 5737]
– Spectroelectrochemistry – Part 1: Getting started [Link AN 5739]
– Spectroelectrochemistry – Part 2: Experiments and Data evaluation [Link AN 5740]
– Raman Spectroelectrochemistry [Link AN 5741]
– How Cabling and Signal Amplitudes Affect EIS Results [Link AN 5747]
– Testing Lithium-Ion Batteries [Link AN 5748]
– Dye Solar Cells – Part 1: Basic principles and measurements [Link AN 5749]
– The Art of Electrochemistry in an Autoclave [Link AN 5751]
– Dye Solar Cells – Part 2: Impedance measurement [Link AN 5752]
– Measuring Batteries using the Right Setup: Dual-cell CR2032 and 18650 Battery Holder [Link AN 5753]
– Getting Started With Your First Experiment: DC105 Corrosion Techniques – Polarisation Resistance [Link AN 5754]
– Getting Started With Your First Experiment: EIS300 Electrochemical Impedance Techniques – Potentiostatic Electrochemical Impedance Spectroscopy [Link AN 5755]
– Dye Solar Cells – Part 3: IMPS and IMVS measurements [Link AN 5756]
– The Implementation of Transmission Lines Using Generalised Circuit Blocks [Link AN 5757]
– Use of Transmission Lines for Electrochemical Impedance Spectroscopy [Link AN 5758]
– A Snapshot of Electrochemical Impedance Spectroscopy [Link AN 5759]
– Determination of the correct value of Cdl from the impedance results fitted by commercially available software [Link AN 5760]
– EIS of Organic Coatings and Paints [Link AN 5763]
