What is the latest technology of alkaline batteries?

Rechargeable alkaline zinc-manganese battery (rechargeablealkaline zinc-manganese battery) An improved alkaline zinc-manganese battery that can be used repeatedly by charging, referred to as RAM. The structure and manufacturing process of this kind of alkaline batteries are basically the same as the alkaline zinc manganese battery.
In order to be rechargeable, the battery has been improved on the basis of alkaline zinc-manganese batteries: ① Improve the structure of the positive electrode, increase the strength of the positive electrode ring or add additives such as binders to prevent the positive electrode from swelling during charging and discharging; ② Through the positive electrode Doping to improve the reversibility of manganese dioxide; ③Control the amount of zinc as the negative electrode active material, and control the discharge of manganese dioxide at only 1 electron; ④Improve the isolation layer to prevent zinc dendrites from penetrating the isolation layer and short-circuit when the battery is charged .
The charge-discharge cycle performance of rechargeable alkaline zinc-manganese batteries is poorer than that of traditional secondary batteries, and the charge-discharge system has a great influence on the cycle life of the battery. The full charge and discharge cycle life is only about 50 times. Do not over-discharge when using this kind of battery, and shallow discharge can greatly increase the cycle life of the battery. The discharge reaction of the battery is the same as that of the alkaline zinc-manganese primary battery. The reverse reaction of the discharge reaction occurs during charging:
MnOOH+Zn(OH)2→Zn+MnO2+H2O
Due to the short cycle life of batteries, development is restricted. Only a few companies in the United States and Canada have large-scale production in the world. my country also produces such batteries, but the production and export volume are small.