Facile electrodeposited MnO₂ as cathode materials for Zn-ion batteries

MnO₂ prepared through facile electrochemical-deposition method at different deposition time on Ni foam substrates are used as cathode materials for Zn-ion batteries. The results show that the electrode using the condition of deposition current of 80 mA for 10 min has the best overall electrochemical performances. The specific capacity measured by the electrode position of the MnO₂ electrode for 5 min is the highest, but the cycle performance of the sample is poor. The specific capacity measured by electrode position of the MnO₂ electrode sample for 20 min is the lowest, but the cycle performance of the sample is the best.