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New Cobalt-Free Silicon EV Battery Is The Best Thing Ever (cleantechnica.com)

submitted 2 months ago* (last edited 2 months ago) by [email protected] to c/[email protected]

43 comments fedilink hide all child comments

“This breakthrough development translates into a remarkable improvement in cell-core energy density, reaching 2,000Wh/L in batteries and approximately 1,700Wh/L in full-size EV batteries – more than double the performance of current state-of-the-art technologies,”

“Sienza’s 3D pure silicon anode has demonstrated an average gravimetric capacity of 2,941 mAh/g,” Professor Gharib said. “This means that for every gram of silicon, our batteries can store 2,941 milliampere-hours of electricity, significantly higher than the industry standard for graphite, with a gravimetric capacity of 372 mAh/g.”

Aside from completely avoiding the cobalt issue, Sienza notes that its manufacturing process does not rely on the solvent-based coating systems deployed for producing conventional lithium-ion batteries. Sienza cites one commonly used solvent in particular, N-methyl-pyrrolidone (NMP).

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[–] [email protected] 22 points 2 months ago (2 children)

Possibly difficult to mass produce. That’s usually what kills all the new great battery tech.

[–] [email protected] 8 points 2 months ago

Sienza calculates that its battery cells cost 48% less than conventional cells to manufacture.

I hope this encourages some manufacturers to endorse it and bring it to market. That could make them save and profit a lot compared to other battery tech manufacturers.

[–] [email protected] 4 points 2 months ago

Even if this gets relegated to niche applications, all improvements are good improvements.

At the very least, it demonstrates that certain targets are possible, and that's sometimes necessary to secure funding to find those cheaper/scalable options.