Electrolytic cell for quartz crystal microbalance / electrochemical quartz crystal microbalance

Abstract

The present invention provides an electrolytic cell for quartz crystal microbalance / electrochemistry quartz crystal microbalance. The inside wall of the cell body of the electrolytic cell is provided with reference electrode slots; the cell body wall is embedded with platinum wire counter electrodes contacted with the inner space of the cell; the lateral surface of the cell body is provided with a baffle communicated with the inner space of the cell, rubber seal rings, quartz crystal vibration pieces and rubber seal rings are provided in the cell body and in the middle part of the lateral baffle, two inlet and outlet wires of the quartz crystal vibration piece penetrate from the narrow slit between the lateral baffle and the cell wall, and then the lateral baffle is fixed with the cell wall through screws; the bottom inside the cell is provided with stirring magnetons; the top of the cell body is provided with seal plastic rings and a top cover board, and the cover board is respectively fixed to the lateral baffle and the cell wall through screws. Compared with the prior technology, the invention has good seal effect, the reference electrode immerges into the lower layer solution from the slot, and the platinum wire counter electrode is arranged beneath the cell wall for experiment measuring; the quartz crystal vibration pieces are mounted on the lateral surface of the cell body, thereby excluding or decreasing the pressure produced by the solution pressure to the quartz crystal vibration pieces.

Description

technical field [0001] The invention relates to an electrochemical experiment device, in particular to an electrolytic cell for quartz crystal microbalance / electrochemical quartz crystal microbalance. Background technique [0002] At present, when using quartz crystal microbalance / electrochemical quartz crystal microbalance to study self-assembled films and electrochemical deposition, generally use electrolytic devices that cannot be sealed, cannot directly fix the reference electrode and platinum wire counter electrode, and cannot perform magnetic stirring. pool, in the experimental operation process, there are the following disadvantages in using the above-mentioned electrolytic cell: [0003] 1. Difficult to seal. In the experiment, some self-assembled films with organic solvents as solvents are studied, especially some very volatile organic solvents (such as: chloroform). When the concentration of the substance changes, or even the organic solvent is completely volatil...

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Problems solved by technology

[0004] 2. Cannot be carried out during electrochemical experiments

Whether it is a self-assembled film or an electrodeposition experiment, in the process of dropping the solution, the pressure of the solution will have a great impact on the frequency change of the quartz crystal oscillator, resulting in a decrease in the accuracy of the experimental results

[0006] 4. The experiment cannot be carried out when measuring a special system

For some solutes with low solubility, during the long-term self-assembly process, part of the solutes will be re-precipitated and deposited on the surface of the quartz crystal oscillator, making the concentration of the solution uneven, which will directly affect the accuracy of the mass determination of the self-assembled film.

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