Synchronization of the Current Oscillation of Copper Wire Anode in Phosphoric Acid Solution

The coupling action and synchronization of the current oscillation for two copper wire anodes in phosphoric acid solution are studied, and the potential between the working and reference electrodes and the interval between two copperwires are adjusted in the experiment. Synchronization,anti-phase and quasi-period synchronization of current oscillation for different electrodes are found. The periods and amplitudes of currentoscillation are strongly dependenton the potential and the electrode interval. In the given interval between two copper wires, synchronization is easy to be found when the difference is not obvious, and anti-phase and quasi-period synchronization of current oscillation are easy to be found when the currentoscillations oftwo electrodes are very different. Withthe decrease ofthe interval between the copperwires, correlation, phase-lock and synchronization of current oscillation are found. When the electrode interval is small, synchronization of current oscillation is easy to be found. Waveform and frequency of the current oscillation after coupling are dependent on not only the effect of electric field, but also the course of dissolution of copper anode. The coupling mechanismand emergence of special oscillation are analyzed and discussed. Currentoscillation leads to coupling action of the electric field through electric resistance of electrode interface, solution, and nonlinear coupling action in electrochemical reaction changes the previouswaveforms and frequencies, inhibiting or strengthening the waves. The differences between the two electrodes signal makewavesmodulation and produce more complexoscillation. Underthe effect of coupling action of electric field and chemical wave, the waveforms of two adjacent electrode adjust to each other. The adapted waveforms are strengthened and lead to synchronization at last. Waveforms depend on the potential and coupling strength. Strongly couplingwill tend to cause the synchronization of current oscillation for different electrodes.