Battery Test System (8 channel battery cycler) – WBCS3000Ls / WBCS3000Le

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  Three Electrode Battery Test Cell – compression controlled (redox.me)

  This cell is designed as high-quality alternative to Swagelok-type constructions for reproducible electrochemical measurements of battery and supercapacitor materials.

  The cell consists of two main elements:

   

  (i) the cell base with micrometre screw and compression spring, which allows precise control of pressure applied to the electrode sandwich; and

  (ii) electrode cartridge where the anode, cathode and reference electrode are located.

   

  The (default) electrode cartridge and plungers are designed for planar electrodes with diameter of 18 mm and total sandwich thickness of 2.5 mm. The diameter of separator shall be at least 2 mm larger than electrode diameter (max. 22 mm). The lock ring secures the separator in the electrode cartridge allowing easy and safe electrodes insertion, while ensuring accurate alignment. The upper and lower electrode plungers are available in various materials: 316L Stainless Steel (default), copper, aluminum, nickel etc. The pin-type reference electrode is installed from the side of the electrode cartridge. Thanks to sharp edged hole at the end of the pin the reference electrode (Li/Na/K etc.) can be easily punched from the metal foil and directly loaded into cell. The magnetic mount facilitates rapid assembly of the cartridge in the cell base. The force applied to the electrodes can reach up to 90N and is adjusted with the micrometer control knob. For 2-electrode measurements, the reference electrode feedthrough hole can be closed with the reference electrode punch.

  The cell elements are constructed with materials that are inert to the sample (Stainless steel and PEEK). It well fits aqueous (FKM and EPDM O-Rings) and organic solvent (FFKM O-Rings) electrolyte requirements. Good electrical contact is ensured by gold plated pins. The construction is gas-tight and can be effortlessly assembled in the glove box, reducing possible human error to minimum.

   

  Application note:
  This cell can be used for all common battery measurements, such as galvanostatic cycling, cyclic voltammetry or electrochemical impedance spectroscopy. Both liquid and solid-state or gel-polymer electrolytes can be studied. Additionally, properties and performance of supercapacitor materials can be investigated. Various materials can be examined, including typical Li-ion electrodes (graphite, NMC, LTO etc.) and other chemistries – sodium, magnesium, potassium etc. It can also be applied to measure the ionic conductivity of separators and electrolytes. Owing to the micrometer control knob, the relationship between the initial pressure applied to the cell and the performance of solid-state electrolytes or metal plating process (anode-free systems) can be studied.

   

  The above graph shows relation of pressure applied to electrode stack and distance travelled from the point of contact. The point of contact can be determined by checking OCV (see manual video) or by calculation. To calculate the point of contact, subtract electrode stack thickness from 4 mm. For example, for the 0.9 mm stack, the point of contact (i.e. reading on micrometer screw) will be 4 mm – 0.9 mm = 3.1 mm. Therefore, you should set micrometer screw to 3.1 mm and measure distance/pressure relation from this point.

   

  Specification:
  recommended electrode diameter: 18 mm (other options: 12 mm, 15 mm, 16 mm)
  recommended minimum separator diameter: electrode diameter + 2 mm (max. 22 mm)
  maximum electrode sandwich thickness: 2.5 mm
  spring rate: 10.86 N/mm
  maximum spring load: 90 N
  operating temperature: -40°C – 80°C (default)

   

  Intrastat data:
  HS Code: 90309000
  Country of Origin: Sweden
  NET weight: 400g

   

  Product includes:
  1 x cell base
  1 x compression control unit
  1 x Three-Electrode Cartridge
  1 x reference electrode punch
  1 x upper plunger (Stainless Steel)
  1 x lower plunger (Stainless Steel)
  1 x separator locking ring
  1 x gold plated piston
  1 x compression spring
  2 x gold plated pin contact
  1 x set of O-rings
  1 x set of 3 cable adapters 1mm to 4mm banana plug
  1 x electrode plunger removal tool

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  Battery Test System (32 channel battery cycler) – WBCS3000Le32

  • Low current model
  • 32 channel battery cycler
        (expandable up to 128 channels)
  • No. of minimum channel : 16 channels
  • max. voltage range : ±5V
  • max. current range : 100mA@5V

   

  Application

  • For low current application
  • Micro battery application
  • Sensor application
  • Electroanalytical application

   

  Features

  • low current type
  • channel power limit : max. 500mWatt per channel
  • number of minimum channels : 16 channels
  • extra channels can be added by the unit of 16 channels
  • voltage range : ±5V
    
  • current range : 4 ranges, max. ±100mA
  • voltage/current accuracy : ±0.01% f.s.
  • Sampling time : 10msec (20msec with option)
  • potentiostat/galvanostat circuit
    – no switching time (charging to discharging, discharging to charging)
    – analog feedback control to keep constant voltage & current
    – capability of electrochemical experiments by controlling voltage versus
      reference electrode for positive voltage polarity only.
  • high precision
    – 16bit(0.0015% full scale) ADC, DAC
    – MOSFET type linear power supply circuit.
    – shield cell cable to prevent EMI noise
  • safety
    – unique “fail check” function: to protect the system and cell, the system
      will automatically stop when measured value is different from control
    value by battery failure or wrong cell connection etc.
    – system safety parameter: if the measured value is over system specification,
      the running channelwill stop automatically.
    – user defined safety condition setting: user can input safety level following
      test cell’s chemistry.
    – automatic cell connection check: before experiment, if the cell voltage value
      is near 0Volt, program gives the warning message for the operator to check
      the cell connection.
    – if the operator did press stop function button by mistake, confirmation message
      box appears.
    – to prevent over current, poly-switch is located in each channel.
    – watchdog function: stop “running channel(s)” on communication failure.
    – while any channel is running, operator could not close the server program.
    – if main program was down by unstable operating system, independent server
      program keeps the experiment (control & data acquisition) without dead time.
  • maintenance & system expansion
    – plug-in type channels
    – power supply per 32 channel
    – easy expansion up to 128 channels by adding 16ch substation
    – each channel has Poly switch instead of fuse.
  • LAN communication
  • User friendly software
  • Compatible with IVMAN^TM DC data analysis software without purchasing license code
  • Customized specification available

   

  Experimental Techniques

  Energy Test

  • CC/CV (Lithium battery) test menu
  • CC/CC (NiCd(NiMH) battery) test menu
  • Steady state CV
  • Pstat IV curve
  • Gstat IV curve
  • EVS (Electrochemical voltage spectroscopy) test
  • GITT (Galvanostatic intemittent titration technique) test
  • PITT (Potentiostatic intermittent titration technique) test 

  Electroanalytical techniques

  • Cyclic voltammetry
  • Linear sweep voltammetry
  • Chrono-amperometry
  • Chrono-coulometry
  • Chrono-potentiometry

  
  Corrosion measurement

  • Tafel plot
  • Potentiodynamic
  • Potentiostatic
  • Galvanostatic
  • Cyclic polarization
  • Ecorr vs. time
  • Linear polarization resistance

   

  Options

  • Auxiliary voltage & temperature measurement
    
  • Rack mount system available
    
  • Multiple control board configuration available
    
  • Battery jig
    

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