Can this technique be reliably and cost effectively scaled to industrial grade and volume manufacturing? This has been the problem with almost all battery "breakthroughs."
Sinanode: a silicon solution for today's batteries?
While there is much interest in a solid state silicone battery for EV's, there may be a hybrid option called Sinanode available from OneD Battery Sciences using silicon nanowires infused into the graphite used in today's lithium ion batteries that results in
Rather than an entirely new battery tech, the process leverages existing supply chains and large scale manufacturing processes for todays' lithium ion batteries by "doping" the base graphite. The patented (240!) process "infuses silicon nanowires directly into the graphite, much like plugging an electrical cord into an outlet. When charged, silicon nanowires remain pliant and do not crack. With hundreds of thousands of wires on each graphite particle, the silicon triples the energy density of the anode."
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GM Invests in Silicon Battery Tech to Advance Next-Gen Ultium Cells - The Detroit Bureau
SINANODE - OneD Battery Sciences
OneD Battery Sciences
- Tripled energy capacity of the anode
- Faster charging speeds
- Greater power
- Reduced graphite
- Lower cost per kWh
- Eliminates silicon expansion (swelling) issues
- Eliminates silicon stability (degradation) issues
Rather than an entirely new battery tech, the process leverages existing supply chains and large scale manufacturing processes for todays' lithium ion batteries by "doping" the base graphite. The patented (240!) process "infuses silicon nanowires directly into the graphite, much like plugging an electrical cord into an outlet. When charged, silicon nanowires remain pliant and do not crack. With hundreds of thousands of wires on each graphite particle, the silicon triples the energy density of the anode."
Is it too far of a leap to say this will be used in the "Gen 2" Ultium batteries? I don't think so:
Keep in mind, there are certain challenges with silicon-based batteries that have become commercialization obstacles. Silicon tends to swell during the charging cycle, and degrades more rapidly than other materials, and those tendencies will have to be ameliorated before a solid state production battery can be developed. OneD claims its Sinanode silicon nanowire infusion process eliminates the issues of silicon expansion and stability and can be used in today's battery manufacturing plants.
GM Invests in Silicon Battery Tech to Advance Next-Gen Ultium Cells - The Detroit Bureau
SINANODE - OneD Battery Sciences
OneD Battery Sciences
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Yes, that's the whole point af the above, obermd.
This is a change in the existing manufacturing process rather than a breakthrough solid state silicon battery.
The problem is that even a change in existing manufacturing processes can lead to failures. The Bolt battery recall was due to a faulty battery anode manufacturing (anode was folded over). There's no guarantee that this can be implemented, but I sure hope it can be as it would set the bar a lot higher for solid state batteries.Yes, that's the whole point af the above, obermd.
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