-(2)What is energy density? Development trend of energy density in lithium batteries

(2)What is energy density? Development trend of energy density in lithium batteries
author:enerbyte source:本站 click136 Release date: 2023-12-25 08:48:40
abstract:
The higher the energy density of a battery, the more electricity is stored per unit volume or weight. Development trend of energy density in lithium-ion batteries At present, a large number of civil aircraft use nickel cadmium batteries. Compared to lithiu...

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The higher the energy density of a battery, the more electricity is stored per unit volume or weight.

Development trend of energy density in lithium-ion batteries

At present, a large number of civil aircraft use nickel cadmium batteries. Compared to lithium-ion batteries, they have disadvantages such as large volume, large weight, insufficient energy storage and discharge current, and slow charging. With the maturity of lithium-ion battery technology and the improvement of performance, high-performance and high-capacity lithium-ion batteries will further meet the electrical energy needs of the new generation of multi electric civil aircraft, reduce the weight of the aircraft, and promote various civil aircraft manufacturers to gradually use them in onboard systems such as emergency lighting, cockpit voice recorders, flight data recorders, independent power sources for recorders, backup or emergency power sources, main power sources, and auxiliary power device power sources.

Under the dual drive of policy and market, power lithium iron phosphate batteries are bound to develop towards high energy density, high cycling performance, and high safety performance. This requires research institutions and companies to make improvements in positive electrode materials, negative electrode materials, and electrolytes. Solid state batteries, silicon carbon negative electrodes, high nickel ternary materials, and lithium rich manganese positive electrodes are considered the mainstream technology routes for the company's development in recent years.

The technical goal of single cell batteries in 2025 is to achieve a specific energy of 400Wh/kg. Developing more efficient and energy-saving new positive electrode materials to overcome and replace existing defective positive electrode materials has become a research hotspot. With the continuous emergence of new materials, lithium-ion battery technology will continue to develop and mature. With its superior performance, high-capacity and high-power lithium-ion batteries will have broader application prospects in the field.

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