Lithium batteries, the protagonist of the new energy era
With the development of technology and environmental protection, there is an increasing demand for batteries in fields such as new energy vehicles, energy storage devices, and intelligent electronic products. Among numerous types of batteries, lithium batteries have become the protagonist of the new energy era due to their unique advantages.
Lithium battery is an electrochemical power supply that uses lithium as positive and negative electrode materials. It has the characteristics of high energy density, high power density, long life, low self-discharge, no memory effect, green and environmental protection. Lithium batteries can be divided into two categories: lithium primary batteries and lithium-ion batteries, among which lithium-ion batteries can be further divided into lithium-ion liquid batteries and lithium-ion polymer batteries.
Lithium ion liquid battery is the most common kind of lithium battery at present. It uses liquid organic solvent as electrolyte, which has the advantages of low cost, large capacity, good cycling performance, and is widely used in mobile phones, laptops, digital cameras and other fields. However, it also has disadvantages such as poor safety, large volume and weight, and fixed shape.
Lithium ion polymer batteries are a new type of lithium battery that uses solid or colloidal polymers as electrolytes. They have the advantages of high safety, lightweight, and variable shape, and are suitable for fields such as tablets, wearable devices, and drones. However, it also has drawbacks such as high cost, small capacity, and poor cycling performance.
In order to overcome these shortcomings, scientists continuously develop new lithium battery materials and technologies, such as lithium cobalt oxide, ternary materials, lithium iron phosphate, lithium sulfide, etc. These new lithium batteries not only improve performance and safety, but also reduce cost and resource dependence. Among them, lithium iron phosphate battery is considered to be the most suitable lithium battery for new energy vehicles and energy storage equipment because of its high temperature range, high power endurance, long life and other characteristics.
It is reported that Dalian Institute of Chemical Physics, Chinese Academy of Sciences, released a major breakthrough on September 26, 2021: they successfully developed a high-performance lithium iron phosphate cathode material perovskite LiFe0.5Mn0.5O3. This material has characteristics such as high specific capacity (about 200mAh/g), high platform (about 3.6V), and high stability (capacity retention rate exceeding 90% after 500 cycles), making it one of the best known lithium iron phosphate cathode materials. This achievement will provide strong technical support for the field of new energy vehicles and energy storage equipment in China.
From these facts, it can be seen that lithium batteries are the protagonist of the new energy era, bringing infinite possibilities and convenience to our lives and work. Lithium batteries play an irreplaceable role in smart electronic products such as smartphones, computers, tablets, drones, and new energy fields such as electric vehicles, energy storage devices, and solar power generation. Lithium batteries can not only provide efficient, stable, and safe electricity, but also save resources, protect the environment, and reduce pollution.
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