Electrochemical Workstation CHI660F Series

The CHI600F series is a universal electrochemical analysis measurement system. The following is a schematic diagram of the hardware structure of the instrument. The instrument contains a fast digital signal generator, a direct digital signal synthesizer for high-frequency AC impedance measurement, a dual channel high-speed data acquisition system, a potential current signal filter, multi-stage signal gain, iR drop compensation circuit, and a constant potential/constant current meter (660F). The potential range is ± 10V and the current range is ± 250mA. The lower limit of current measurement is below 10pA. It can be directly used for steady-state current measurement on microelectrodes. If connected to CHI200B microcurrent amplifier and shielding box, it can measure currents of 1pA or lower. If connected to the CHI680D high current amplifier, the current range can be expanded to ± 2A. The CHI600F series is also a very fast instrument. The update rate of the signal generator is 10MHz, and two synchronous 16 bit high-resolution and low-noise analog-to-digital converters are used for data acquisition. The maximum rate for dual channel simultaneous sampling is 2.5MHz. Dual channel synchronous current and potential sampling can accelerate the speed of impedance measurement. Some experimental methods have a time scale of up to ten orders of magnitude and a very wide dynamic range. When the scanning speed of cyclic voltammetry is 1000V/s, the potential increment is only 0.1mV. When the scanning speed is 5000V/s, the potential increment is 1mV. For example, the measurement frequency of AC impedance can reach 3MHz, and the frequency of AC voltammetry can reach 10KHz. The instrument can operate in the form of two, three, or four electrodes. Four electrodes can be used for electrochemical measurements at liquid/liquid interfaces, and are also important for high current or low impedance electrolytic cells (such as batteries) to eliminate measurement errors caused by cables and contact resistance. The instrument also has an external signal input channel, with a maximum synchronization rate of 2.5MHz for 16 bit high-resolution sampling. It is possible to record external input voltage signals, such as spectral signals, while recording electrochemical signals. This is extremely convenient for experiments such as spectroscopic electrochemistry.

Electrochemical Workstation CHI660F SeriesIt is an iterative upgrade product of the 600E series. After the upgrade, it has a faster data acquisition speed and uses a dual channel synchronous ADC with 16 bit resolution and 2.5MHz. Previously, the dual channel synchronous ADC was 1MHz.

CV testing supports a sampling interval of 1mV at a scanning speed of 2500V/s. Previously, the sampling interval was 1mV at a scanning speed of 1000V/s.

The minimum sampling interval for CA has been reduced from 1 microsecond to 0.4 microsecond, with dual channel synchronization.

The new model will have faster data transfer speed under the USB 3.0 interface. The scanning speed of real-time data transmission for CV has been increased from 3V/s to 12V/s. The real-time data transmission interval of i-t and CA technology has been reduced from 0.0003333 seconds to 0.0001 seconds.

The frequency of AC impedance is increased to 3MHz.

We have added current interruption iR compensation, constant current intermittent titration technology (GITT), and constant potential intermittent titration technology (PITT).

The CHI600F series hardware adopts high-speed processors, fast amplifiers, fast analog-to-digital converters, and digital to analog converters. The timed electricity method adds an analog integrator. A 16 bit high-resolution and highly stable current bias circuit is used to achieve current zeroing output, and can also be used to improve the dynamic range of AC measurement current. High resolution analog-to-digital converters have better signal-to-noise ratios and provide a larger dynamic range for sensitivity settings.

Electrochemical Workstation CHI660F SeriesIt is also allowed to upgrade to a dual working electrode electrochemical analyzer (dual potentiostat). The new design includes a circuit board with a second channel for potential control, current voltage conversion, multi-stage gain, and low-pass filter, making it the CHI700F series dual working electrode electrochemical analyzer (dual potentiostat).

The CHI600F series instruments integrate almost all commonly used electrochemical analysis and measurement techniques. In order to meet different application needs and funding conditions, the CHI600F series is divided into multiple models. Different models have different electrochemical analysis measurement techniques and functions, but the basic hardware parameter indicators and software performance are the same. CHI600F and CHI610F are basic types used for mechanism research and analytical applications, respectively. They are also excellent teaching instruments. CHI602F and CHI604F can be used for corrosion research. CHI620F and CHI630F are comprehensive electrochemical analyzers, while CHI650F and CHI660F are more advanced electrochemical workstations.

Block diagram of CHI600F series electrochemical analyzer/workstation

Hardware parameter indicators:

Comparison of different models of CHI600F series instruments

Can obtain selected phase data

The price does not include computers. The warranty period for the instrument is one year.