Comparison of the advantages and disadvantages of several power lithium-ion batteries

Power lithium-ion battery technology: lithium batteries and aluminum-air batteries 1. Hydrogen fuel power battery industry In the hydrogen fuel power battery industry chain, the upstream is the processing, transportation and storage of hydrogen. The midstream is to process key components such as reactors. The reactor is integrated with the two parts, the hydrogen fuel power battery system; at the grassroots level, there are three important directions: transportation, mobile power and fixed power. two. Comparison of the advantages and disadvantages of power lithium-ion batteries There are currently four important transportation energy sources: lithium batteries, hydrogen fuel power batteries, supercapacitors and aluminum-air batteries. Lithium batteries, super capacitors and hydrogen fuel power batteries have been widely used, while aluminum-air batteries are still in the experimental stage. In terms of energy supply, lithium batteries and supercapacitors are suitable for pure electric vehicles, but they need to be charged externally. Hydrogen fuel-powered battery vehicles need external hydrogenation, and aluminum-air batteries need to supplement aluminum plates and electrolytes. What are the characteristics of lithium batteries? Lithium batteries are rewarded in two categories: non-rechargeable and rechargeable. Batteries that cannot be charged are called disposable batteries. Chemical energy can only be converted into electrical energy at a time, and electrical energy cannot be reduced to chemical energy. Such as lithium-manganese dioxide primary batteries, lithium-thionyl chloride primary batteries. Rechargeable batteries are called secondary batteries. It converts electrical energy into chemical energy, and chemical energy can be stored and used reversibly, just like lithium-ion mobile phone batteries. The biggest feature of lithium batteries is high specific energy. Specific energy refers to the energy per unit component or unit volume. Specific energy is expressed in Wh/kg or Wh/L. Wh is a unit of energy, W is a watt, h is an hour; Kg is a kilogram (a unit of weight), and L is a unit of liter (a unit of volume). Here is an example to illustrate: No. 5 Nickel-cadmium battery has a rated voltage of 1.2v, a capacity of 800mAh, and an energy of 0.96wh (1.2v×0.8ah). The rated voltage is. 5 pieces of the same specification lithium manganese oxide batteries, 3V, capacity 1200mAh, energy 3.6wh. The size of the two batteries is the same, so the specific energy of the lithium manganese oxide battery is 3.75 times that of the nickel-cadmium battery! Statement: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete the previous one: Analysis Precautions for discharging Ni-MH batteries