r/science • u/mvea Professor | Medicine • Jan 03 '20

Chemistry Scientists developed a new lithium-sulphur battery with a capacity five times higher than that of lithium-ion batteries, which maintains an efficiency of 99% for more than 200 cycles, and may keep a smartphone charged for five days. It could lead to cheaper electric cars and grid energy storage.

https://www.newscientist.com/article/2228681-a-new-battery-could-keep-your-phone-charged-for-five-days/
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u/under_the_heather Jan 04 '20

the reason you keep reading articles about it and not seeing it go anywhere is the same reason electric cars were killed for something like 60 years. It's more profitable for phone companies to release an incrementally larger battery for the next 2 decades than to release a phone now that has a weeklong battery or more. So they kill the research and release a phone a year.