Nickel Hydride Batteries

Analysis of the structure and working principle of Nickel Hydride Batteries

Nickel Hydride Batteries

Nickel Hydride Batteries refers to a lithium ion battery that uses lithium iron phosphate as the positive electrode material. The positive electrode materials of lithium ion batteries mainly include lithium cobalt oxide, lithium manganese oxide, lithium nickel oxide, ternary materials, lithium iron phosphate, etc. Among them, lithium cobalt oxide is the positive electrode material used by most lithium ion batteries at present.

The requirements for rechargeable batteries are: high capacity, high output voltage, good charge and discharge cycle performance, stable output voltage, large current charge and discharge, electrochemical stability, safety in use, wide operating temperature range, non-toxic or less toxic, and no pollution to the environment. The Nickel Hydride Batteries using LiFePO4 as the positive electrode is good in these performance requirements, especially in high discharge rate discharge, stable discharge voltage, safety, life, and no pollution to the environment. It is the best and is currently the best high-current output power lithium ion battery.

LiFePO4 is the positive electrode of the battery, connected to the positive electrode of the battery by aluminum foil, with a polymer diaphragm in the middle, which separates the positive electrode from the negative electrode, but lithium ions Li can pass through while electrons e- cannot. On the right is the negative electrode of the battery composed of carbon (graphite), connected to the negative electrode of the battery by copper foil. The electrolyte of the battery is between the upper and lower ends of the battery, and the battery is sealed by a metal shell. When the LiFePO4 battery is charged, the lithium ions Li in the positive electrode migrate to the negative electrode through the polymer diaphragm; during the discharge process, the lithium ions Li in the negative electrode migrate to the positive electrode through the diaphragm. Lithium-ion batteries are named because lithium ions migrate back and forth during charging and discharging. It should be noted here that there will be some differences in the performance parameters of lithium iron phosphate batteries processed by different factories; in addition, some battery performance is not included, such as battery internal resistance, self-discharge rate, charging and discharging temperature, etc.

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