Can alkaline batteries be charged?


Can ordinary alkaline batteries be charged? As a dispos […]

Can ordinary alkaline batteries be charged? As a disposable battery, the charging time should not be too long. It is easy to cause an overheating explosion (electrolyte outflow in the battery) to charge the ordinary battery for a long time. If you want to charge, it is best to choose the corresponding charger, because this type of charger can ensure that the battery is charged at a lower voltage, thus reducing the charging speed of the battery, and generally has an overheat protection device to ensure normal charging. Charge and discharge of ordinary alkaline batteries are used in the number of cycles: about 10 times, provided that the corresponding charger is used.
Limiting the number of times of re-use of ordinary alkaline batteries is on the electrode material, and the charging time is too long. After the reverse reaction of the original battery material is finished, it is equal to direct electrolysis of KOH (here, alkaline battery) is actually electrolyzed water, which directly generates gas, which is easy. The phenomenon of battery expansion that we saw occurred, and finally the battery broke due to excessive pressure inside the battery.
Why ordinary alkaline batteries can be charged, in fact, ordinary alkaline batteries, combined with the principle of rechargeable alkaline batteries (rechargeable alkaline batteries and general alkaline batteries have the same electrode material, the main difference is that the former is added in the positive electrode material Cerium oxide), the reaction of a common alkaline battery.
Alkaline battery construction analysis
Alkaline batteries are named after their alkaline electrolytes. Like all dry batteries, the structure of alkaline batteries is mainly composed of positive electrode, negative electrode and electrolyte. The more common alkaline battery is cylindrical. The specific structure of the battery and its constituent materials are as follows:
1. Positive electrode: in close contact with the outer casing is a positive electrode ring made of electrolytic manganese dioxide, graphite and carbon black. The outer casing is a nickel-plated steel shell with a positive electrode cap, which also serves as a positive current collector;
2. Negative electrode: a paste made of powdered zinc particles is placed in the middle of the lithium battery, and a brass collector is inserted therein, and the collector is connected to the bottom of the negative electrode;
3. Electrolyte: It is a paste-like KOH electrolyte, which is mixed with a negative electrode to form a paste;
4, the diaphragm and the sealing ring: inside the battery, the positive and negative electrodes are separated by a diaphragm, and the steel shell is separated by a nylon or polypropylene sealing ring.
The structure of the alkaline battery includes, in order from the outside to the inside: a seal ring, a steel case (also serving as a positive electrode current collector), a positive electrode, a separator, a negative electrode, an electrolyte solution, and a copper tube (also serving as a negative electrode current collector). There is also a button-shaped alkaline battery, often referred to as an AG battery, which is a type of button battery.
The structure of the alkaline battery made into various shapes is the same. According to this definition, the alkaline battery is a primary battery in which zinc is the negative electrode, manganese dioxide is the positive electrode, and potassium hydroxide solution is the electrolyte, which is referred to as an alkaline manganese battery.

Rechargeable Alkaline battery