World’s largest battery maker CATL announces major breakthrough in energy density

CATL launches 500 Wh/kg battery
In one of the most significant battery breakthroughs in recent years, the world’s largest battery manufacturer CATL has announced a new “condensed” battery with 500 Wh/kg which it says will go into mass production this year.“The launch of condensed batteries will usher in an era of universal electrification of sea, land and air transportation, open up more possibilities of the development of the industry, and promote the achieving of the global carbon neutrality goals at an earlier date,” the company said in a presentation at Auto Shanghai on Thursday.CATL’s new condensed battery will have almost double the energy intensity of Tesla’s 4680 cells, whose rating of 272-296 Wh/kg are considered very high by current standards.CATL chief scientist Wu Kai says the condensed battery integrates a range of innovative technologies, including the ultra-high energy density cathode materials, innovative anode materials, separators, and manufacturing processes, offering excellent charge and discharge performance as well as good safety performance.He says the new technology breaks the limits that have long restricted the development of the battery sector and will open up a new era of electrification centred on high safety and light weight.During the presentation, CATL said its working with partners on the development of electric passenger aircraft practicing aviation-level standards and testing in accordance with aviation-grade safety and quality requirements.In addition to aircraft, CATL says it will soon launch the automotive-grade version of condensed batteries which it says will also go into mass production within this year.

Batteries with 500 Wh/kg will enable electrification of passenger aircraft

In 2020 Elon Musk said “electric flight starts to get interesting once you hit 400wh/kg”. At the time he predicted that this would become possible by 2023.

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