Oleg Zabluda's blog
Wednesday, April 11, 2018
 
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An anode [...] stores lithium ions [...] silicon [...] can bond with 25 times more lithium ions than graphite, the main material used in lithium-ion batteries today [...] When silicon accommodates that many lithium ions, its volume expands, stressing the material in a way that tends to make it crumble during charging. That swelling also triggers electrochemical side reactions that reduce battery performance.
[...]
Sila created a robust, micrometer-size spherical particle with a porous core, which directs much of the swelling within the internal structure. The outside of the particle doesn’t change shape or size during charging, ensuring otherwise normal performance and cycle life.
"""
https://www.technologyreview.com/s/610792/this-battery-advance-could-make-electric-vehicles-far-cheaper/
https://www.technologyreview.com/s/610792/this-battery-advance-could-make-electric-vehicles-far-cheaper/

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