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Greentech Media  |  August 20, 2018

VCs Continue Investing in Batteries: Sila Nano Gets $70M for Silicon Anode Tech

"Recently, a new class of silicon anode technologies has emerged based on porous silicon particles. These porous silicon particles mimic the conventional graphite particles, offering mechanical stability and lower surface area, while also enabling higher energy density.”


WIRED  |  August 2, 2018

The battery to power Uber's flying car dreams doesn’t exist (yet)

“The metric you’re looking for is watt-hours per kilogram (Wh/kg)... Lithium sulphur doesn’t do very well on energy per litre, but the sulphur cathode can be lightweight.”

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IEEE Spectrum  |  December 15, 2017

How Long Before Sodium Batteries Are Worth Their Salt?

"The cost of today’s lithium-ion battery technology is very competitive across a variety of markets... So for these new sodium batteries to succeed, they not only have to compete against conventional technologies, but have to compete against lithium batteries—currently a tall order."

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Greentech Media  |  March 8, 2017

Aquion, the Advanced Battery Startup Funded by Bill Gates and Kleiner Perkins, Is Bankrupt

"Aquion's size/weight per kilowatt-hour was approximately 15-times greater than lithium-ion. Like other competitors to lithium-ion, Aquion tried to emphasize that size/weight doesn't matter for grid storage. But all that extra material has an associated cost. The bankruptcy was probably foretold by the bill of materials."


Greentech Media  |  December 14, 2016

Ambri Returns to the Energy Storage Hunt With Liquid Metal Battery Redesign

"When a battery is operated for years, many aging mechanisms appear that may be hidden during first months of testing."

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Greentech Media  |  March 15, 2016

How Soon Can Tesla Get Battery Cell Costs Below $100 per Kilowatt-Hour?

"Tesla can achieve cost savings through a variety of innovations related to manufacturing and battery technologies."


Greentech Media  |  November 16, 2015

Fluidic Energy Is the Biggest Zinc-Air Battery Startup You Haven’t Heard Of

"Zinc-air batteries are complex devices combining characteristics of both batteries and fuel cells... Fuel cells are typically limited in energy efficiency and power density because of fundamental challenges in catalyzing reactions involving oxygen gas. Zinc-air batteries face similar challenges."