Discharge performance of zinc coating prepared by pulse electroplating with different frequencies for application in zinc-air battery

Study of zinc deposited in the presence of organic additives for zinc-based secondary batteries

“…While the deposition at high current peak ensures a sufficient level of overpotential for zinc crystal growth in all crystallographic direction, the currentless gaps were used as recovery times when the created diffusion layer gets the time to balance the reactant gradient, and finally, the high current counter-pulses should dissolve the tips of the dendrites and redeposit the dendrite material in a level form on the electrode. For example Lin et al used the pulses for preparation of a zinc-air anode and they found the best results for a 500 Hz frequency [17] which is consistent with our previous results [16].…”

“…Another way how to avoid dendrite formation is a controlled zinc deposition by special current profile [14], [15], [16], [17]. This approach was broadly studied for Ni-Zn or Ni-air battery applications [15], [17], [18] and the current profile typically consists of high current pulses complemented by electroless periods and in some cases also by counterpulses.…”

“…Another way how to avoid dendrite formation is a controlled zinc deposition by special current profile [14], [15], [16], [17]. This approach was broadly studied for Ni-Zn or Ni-air battery applications [15], [17], [18] and the current profile typically consists of high current pulses complemented by electroless periods and in some cases also by counterpulses. While the deposition at high current peak ensures a sufficient level of overpotential for zinc crystal growth in all crystallographic direction, the currentless gaps were used as recovery times when the created diffusion layer gets the time to balance the reactant gradient, and finally, the high current counter-pulses should dissolve the tips of the dendrites and redeposit the dendrite material in a level form on the electrode.…”

Challenges in Zinc Electrodes for Alkaline Zinc–Air Batteries: Obstacles to Commercialization

“…Developing active anode materials with sufficient porosity and effective specific surface area through pulse electroplating can enhance the corrosion susceptibility of the anodic material, inhibiting the formation of a passivation layer. 50 As a result, the utilization rate, discharge capacity, and energy density of anode materials have improved. It should be noted that when the specific surface area of the anode material is enlarged excessively, a negative impact, such as an increase in electrode resistance and corrosion rate, would shorten its storage life.…”

“…Developing active anode materials with sufficient porosity and effective specific surface area through pulse electroplating can enhance the corrosion susceptibility of the anodic material, inhibiting the formation of a passivation layer . As a result, the utilization rate, discharge capacity, and energy density of anode materials have improved.…”