New Method Increases Energy Density in Lithium Batteries

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Came across this article and thought it was good to share regarding new ways to increase energy density in lithium batteries, which helps to reduce cost of manufacturing - while maintaining longer operating time.  This could take a while before we see this technology "incorporated" into our future batteries, but still exciting to see "progress" being made!

Yuan Yang, assistant professor of materials science and engineering at Columbia Engineering, has developed a new method to increase the energy density of lithium (Li-ion) batteries. He has built a trilayer structure that is stable even in ambient air, which makes the battery both longer lasting and cheaper to manufacture. The work, which may improve the energy density of lithium batteries by 10-30%, is published online today in Nano Letters.
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Posted 3 years ago

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There's so much being invested into battery technology these days that, along with steady increases in solar PV panel performance and value, I think the writing is on the wall... before long, electricity will be the power source of choice and non-renewable resource consumption will be relegated to only extremely power dense applications, mainly industrial in nature.

The 7% annual increase figure has shown no sign of slowing down. Currently, large battery cell manufacturers are ramping up production of larger 20700 format cells, 20x70mm vs the 18x65mm of our familiar 18650 cells. This move alone is predicted to reduce costs by about 30% per kWh according to Tesla and Panasonic with regards to their Gigafactory production.

Dyson, Metabo and several other cordless power tool brands have already started using the 20700 cell format. I would assume most companies will eventually shift to that cell format for high power applications.