Electrochemical Work Station (CHI) with RDE
Make: CH Instruments
Model:
Year of purchase: 2016 UG 2019
Funded by:
Location: Energy Lab
Contact email: energylab@cens.res.in
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  • Potentiostat / Bipotentiostat:
  • Zero resistance ammeter
  • 2- or 3- or 4-electrode configuration
  • Floating (isolated from earth) or earth ground
  • Maximum potential: ±10 V for both channels
  • Maximum current: ± 250 mA continuous (sum of two current channels), ±350mA peak
  • Compliance Voltage: ±13 V
  • Potentiostat rise time: < 1 µs, 0.8 µs typical
  • Potentiostat bandwidth (-3 dB): 1 MHz
  • Applied potential ranges: ±10 mV, ±50 mV, ±100 mV, ±650 mV, ±3.276 V, ±6.553 V, ±10V
  • Applied potential resolution: 0.0015% of potential range
  • Applied potential accuracy: ±1 mV, ±0.01% of scale
  • Applied potential noise: < 10 µV rms
  • Measured current range: ±10 pA to ±0.25 A in 12 ranges
  • Measured current resolution: 0.0015% of current range, minimum 0.3 fA
  • Current measurement accuracy: 0.2% if current range >= 1e-6 A/V, 1% otherwise
  • Input bias current: < 20 pA
  • Galvanostat:
  • Galvanostat applied current range: 3nA – 250mA
  • Applied current accuracy: 20 pA ± 0.2% if > 3e-7 A, ±1% otherwise
  • Applied current resolution: 0.03% of applied current range
  • Measured potential range: ±0.025 V, ±0.1 V, ±0.25 V, ±1 V, ±2.5 V, ±10 V
  • Measured potential resolution: 0.0015% of measured range
  • Electrometer:
  • Reference electrode input impedance: 1e12 ohm
  • Reference electrode input bandwidth: 10 MHz
  • Reference electrode input bias current: <= 10 pA @ 25°C
  • Waveform Generation and Data Acquisition:
  • Fast waveform update: 10 MHz @ 16-bit
  • Fast data acquisition: dual channel 16-bit ADC, 1,000,000 samples/sec simultaneously
  • External signal recording channel at maximum 1 MHz sampling rate
  • Experimental Parameters:
  • CV and LSV scan rate: 0.000001 to 10,000 V/s, two channels simultaneously
  • Potential increment during scan: 0.1 mV @ 1,000 V/s
  • CA and CC pulse width: 0.0001 to 1000 sec
  • CA minimum sample interval: 1 µs, both channels
  • CC minimum sample interval: 1 µs
  • True integrator for CC
  • DPV and NPV pulse width: 0.001 to 10 sec
  • SWV frequency: 1 to 100 kHz
  • i-t sample interval: minimum 1 µs, both channels
  • ACV frequency: 0.1 to 10 kHz
  • SHACV frequency: 0.1 to 5 kHz
  • FTACV frequency: 0.1 to 50 Hz, simultaneously acquire 1st, 2nd, 3rd, 4th, 5th, and 6th harmonics ACV data
  • IMP frequency: 0.00001 to 1 MHz
  • IMP amplitude: 0.00001 V to 0.7 V rms
  • Other Features:
  • Automatic and manual iR compensation
  • Current measurement bias: full range with 16-bit resolution, 0.003% accuracy
  • Potential measurement bias: ±10V with 16-bit resolution, 0.003% accuracy
  • External potential input
  • Potential and current analog output
  • Programmable potential filter cutoff: 1.5 MHz, 150 KHz, 15 KHz, 1.5 KHz, 150 Hz, 15 Hz, 1.5Hz, 0.15 Hz
  • Programmable signal filter cutoff: 1.5 MHz, 150 KHz, 15 KHz, 1.5 KHz, 150 Hz, 15 Hz, 1.5 Hz, 0.15 Hz
  • RRDE-3A Rotating Ring Disk Electrode Apparatus:
  • Rotation range: 100 ∼ 8000 rpm
  • Rotation accuracy: < 0.1%
  • Power supply: 100 – 240 VAC; 50/60 Hz
  • Operating temperature: 10 – 50°C
  • Inlet gas pressure: 5 psi maximum
  • Cyclic Voltammetry
  • Linear Sweep voltammetry
  • Nyquist and Bode Plots
  • Tafel plot
  • Charge –discharge studies for supercaps
  • Differential pulse voltammetry
  • Chronopotentiometry (i-t curve for stability studies)
  • Electrochemical sensing
  • Hydrodynamic electrochemical studies
Modes Duration (hrs)
LSV Usually takes 5 min (It depends on the scan rate)
CV/DPV Usually takes 5 min (It depends on the scan rate)
10000 cycles 14 hr
25000 cycles 35 hr
AC impedance 20 min
10,000 cycles 14 hr
Charge-discharge Usually 2 h
Chronoamperometry Mini mum 24 hr Depends on how many hours the user wants to monitor the stability (1day – 5days)
Charge-discharge cycling study 4000 cycles 6 h
(1 day-3 days depending on the scan rate, potential window etc)
Sl. No. - Category Fees ( in Rs/- ) + additional 18% GST
01 - Academic Institutes 750 per slot / 3 hrs
03 - External Industry Users 1,500 per slot / 3 hrs
02 - External Industry Partner 1,125 per slot / 3 hrs