US Government Scientists expose why solid-state batteries keep failing

US Government Scientists expose why solid-state batteries keep failing
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[bytejourneycodes]

I deem most articles about solid state batteries as click bait

[SuperFredAZ]

We had the same problem in semiconductors 45 years ago: dendrites.

[xjet]

Dendrite formation has always been a problem with battery technologies -- this is nothing new. I predict that the most successful way to deal with this will be an extra phase in the battery charge/discharge cycle that has the sole purpose of removing the dendrites before recharging or after charging in complete. This may involve the use of an intermediate element or elements between the plates and electrolyte which has the sole purpose of destroying the dendrites.

When this happens I expect to get 5 percent of the gross from whoever patents it and claim this comment as proof of prior art 🙂

[johnwoods]

Forget solid state batteries for cars. I want a solid state battery in my next smart phone and I'm willing to pay $100 extra for that

[MrGunderfly]

the real way to keep from being ten years behind china in tech like batteries, is to have the discipline to stop outsourcing tech and manufacturing to them. in fact, domestically, the US should probably start embracing more vertical integration within smaller companies, counter balanced with anti trust enforcement and more rapidly adaptable regulation capabilities, to foster domestic market driven technology advances. at the same time, sharing such advances globally only once they have been established locally from a manufacturing implementation standpoint. in other words the US needs to "tighten up" to become a leader again.

[tomkvalo]

Just like making a blue LED, this is difficult, and we need a lot of science research on this matter as well.

[Bora_H]

I like your library of background 'B Roll' tech video. It's a nice upgrade. I have grown to hate the generic 'people in lab coats pointing at things' stock clips.
Congrats on your growth and quality- and - thanks!

Life is a roller coaster. I'm glad your hanging in there. Best wishes, mate!

[ebx]

In a related story, nuclear fusion technology has hit a temporary snag..."

[charlesvanderhoog]

Lithium filaments are called "dendrites" in battery parlance.

[TonyA]

For decades we've known about the phenomenon of "tin whiskers" forming from lead-tin solder joints that cause short circuits between terminal pins on ICs, but to my knowledge they still haven't figured out exactly what causes them. This only got worse when lead based solder was banned. The whiskers can even burrow through protective plastic coatings applied to PC boards. It sounds like we've got a similar problem inside of solid-state batteries and scientists are just as baffled as to why they form and how to prevent them.

[bengt_axle]

Quantumscape has been working on the problem of dendrite formation for years. They have developed a special ceramic separator that prevents this. Testing of a prototype has shown that the battery exceeded durability (recharge cycles) expectations and that it could likely last longer than the car itself, providing hundreds of km of range even after 8 years of typical driving.

[traian]

Skip the first 4:30 if you don't want the long winded teaser (and nobody wants it).

[jrb_sland]

Interesting! There are similar problems with lead-free solders long mandated for use in consumer products like cell phones to prevent lead from ending up in landfills which may over time leach lead into the environment - lead is a well-known toxic heavy metal. Lead-free solder alloys have a tendency for the high tin content to grow "tin whiskers" which can eventually create short circuits between conductors on circuit boards, with obvious bad consequences. Various mitigation strategies are offered, but the underlying cause of tin whiskering is still somewhat mysterious. Two steps forward, one step back...

[dragonslayerornstein]

I appreciate the Lorax talking about cars, I knew they'll leave the trees at some point.

[donh]

Sounds like the same issue with Dendrites on conventional Li-Ion shorting the anode to cathode.

[maurobrattich]

It does not matter if the US government discovers a new, better battery technology. Scientific development knows no national boundaries. In the end industrial landscape will define who produces and mostly profit from the new technology.

[hoosierdome]

This is why competition is good, in the end we all win.

[markrowland]

I listened to the head of Toy-motor, saying lying is part of business. I am not believing any announcements from them. Not buying any of their cars.

[NackDSP]

Any stress locked into certain metals from bending or compression etc. will spawn the growth of metal whiskers until the stress in the metal has been relieved by the migration. Holes from tiny flaws in insulator plates, like those in ceramic capacitors combine with electric potential will lead to the growth of dendrites that cause shorts. Any experienced engineer building and testing prototype solid state batteries already know all of this. Those new to the field have no idea yet. Managers with aggressive schedules and large retirement size bonuses on the line have likely put a month or two in the schedule for magic to happen that will solve these problems that they have been avoiding reporting on to upper management and investors for years. Add in the wide temperature range, pressure fluctuations, vibration and accelerations that an automobile battery must endure and a lot of this stuff doesn't show up until you've tested thousands of parts for many years. By the time a reliable solid state battery is on the market, I'll be to old to drive a car. Of course by then the cars will not need me to drive them. Ha.

[ainschuntayleuhn]

I’ve been making homemade chemical batteries for years. Experimenting with different Metals and Electrolytes. Depending on how many cells run both in Series and in Parallel to Boost Amps. It’s a Fun Hobby.