Construction of All-Solid-State Nickel-Zinc Rechargeable Cell with Hybrid Hydrogel Electrolyte

Organic-inorganic hybrid hydrogel electrolyte with ionic conductivity and electrochemical window comparable to the corresponding electrolyte solution was used for assembling an all solid-state rechargeable Ni-Zn cell. The all solid-state rechargeable Ni-Zn cell was superior in charge-discharge performance to the conventional Ni-Zn cell when the distance between the positive and negative electrodes became shorter. Charge retention at the first cycle of this cell was almost 100% even at 2 C discharge rate, but discharge capacity was decreased with repeating charge-discharge cycle.