Wednesday, 23 January 2019

Electrochemical Work Station (CH- Instruments, USA):

Electrochemical work station

Technical and Characterization Specifications:
  • 2- or 3- or 4-electrode configuration
  • Floating (isolated from earth) or earth ground
  • Maximum potential: ±10 V
  • Maximum current: ±250 mA continuous, ±350 mA 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, ±10 V
  • 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
  • CV and LSV scan rate: 0.000001 to 10,000 V/s
  • Potential increment during scan: 0.1 mV @ 1,000 V/s
  • CA and CC pulse width: 0.0001 to 1000 sec
  • CA and 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
  • 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

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