this post was submitted on 02 Dec 2023
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Futurology

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[–] [email protected] 28 points 9 months ago (4 children)

the battery in question is only 1.5ah at 3 volts.

πŸ’€

[–] [email protected] 48 points 9 months ago (1 children)

it's a prototype pouch format, what are you even comparing it to? lead acid 12v? you're just seeing kinda small numbers and thinking that sucks, aren't you?

you know you get whatever voltage and amps out of batteries you want by wiring the cells together in parallel and series, right? right???

the point of this is the cobalt free and fast charging, which are both good.

[–] [email protected] 23 points 9 months ago (2 children)

All large batteries are just smaller batteries wired in series for more voltage and parallel for more capacity. Both these numbers are reasonable and comparable to most battery tech.

[–] [email protected] 8 points 9 months ago (1 children)

According to Yasuhiro Harada, principal researcher at the Nanomaterials Research Laboratory at Toshiba Research and Development Center, β€œTo implement this technology for automotive use, 50 Ah or 100 Ah is needed, and we need to increase the capacity to achieve this goal. β€œ

This sounds like it's still not comparable to existing Li-ion.

[–] [email protected] 1 points 9 months ago

The article is to short to draw conclusions from. For example their concern could be with temperature or with charging speed when linking many modules together.

[–] [email protected] 9 points 9 months ago (1 children)

It’s a starting point at least

[–] [email protected] 7 points 9 months ago (1 children)

And this is...what...bad?

This is obviously at a prototype stage.

They clearly state that this tech would need further improvements including significantly increased capacity. But that may only be a question of size as is the case with pretty much every other battery technology.

And they produce 3V max--so what? Lead acid cells' nominal voltage is 1.2V, lipo 3.7, Nickel is like 1.3V (I can't recall for sure). Want more voltage, wire cells in series, want more current and capacity, wire in parallel.

The battery tech has interesting, useful properties that offer some promise. I don't really see why you're shitting on it. They're not claiming this is some paradigm changing tech or anything.

Before condescendingly ask if I know anything about electronics or how my phone works, while I am admittedly weak on RF design, I have written drivers for accelerometers, gyros, magnetometers, UARTs, displays, GPS receivers, etc., I've done a little bit of work writing code for cameras, I've worked with ADCs, DACs, I have written code for PIC, AVR, ARM, RISC, etc. microcontrollers in C (also a bit of assembly and c++), and I have designed and sold a variety of circuit boards for hobby use using various microcontrollers, sensors, and other components.

I probably don't know how everything in my phone works but I probably have at least a working knowledge of 80-90% of it. I don't do electronics professionally but I've always enjoyed it. That's why, along with enjoying programming, I got my computer engineering degree back when 80386 and 68020 was the latest, greatest (lol) and why I still do electronics and robotics (the kids call it mechatronics now) as a hobby.

Anyway... I am curious to see if they're able to bring this new chemistry to the market in 5 years as they claim. It may not revolutionize anything but it could offer a nice alternative in a variety of applications.

[–] [email protected] 10 points 9 months ago (3 children)

Isn't titanium expensive? I would guess they'd try something like silicon or graphite that is way much abundant

[–] [email protected] 26 points 9 months ago* (last edited 9 months ago) (2 children)

While it is relatively expensive compared to iron, we actually use 95% of all titanium mined for white paint since titanium dioxide is really white.

So if we're able to put almost all titanium production into white paint, I think we could take some of that capacity and put it towards batteries.

[–] [email protected] 5 points 9 months ago

Yeah a friend told me something like that but he forgot to compute how much energy is needed for silicon and how much for titanium. Like aluminium is one of the most used materials but it still is a massive use of energy to refine it from bauxite or what-you-have.

Don't know, I'd say the mainstream is trying to go grapheme and or silicon and these dudes are trying different stuff for the sake of doing it differently.

[–] [email protected] 4 points 9 months ago

It could be white batteries to make the most use of it ☝️

[–] [email protected] 25 points 9 months ago* (last edited 9 months ago)

It's expensive for metal parts because it's a pita to fabricate.

In batteries, it'll be a miniscule amount used and instead of a chunk of titanium, a chemical mix that includes titanium.

Otherwise, titanium, like aluminium, are rather common (like the 8 or 9th most common element on earth).

EDIT: reading the details, it's not just titanium, it's niobium-titanium oxide.

And niobium isn't quite as common as titanium (it's less common than lithium and cobalt) and is in high demand for quite a few industrial applications.

So dunno if this is actually an improvement other than that niobium being mined in Brazil and Canada instead of the hell conditions in central Africa.

[–] [email protected] 9 points 9 months ago

Metallic titanium is just really difficult to work with, apparently. It doesn't like being machined, requires very large presses to be cold or hot formed, and eats drill bits for breakfast. Basically stainless on steroids.

But titanium itself is one the most abundant minerals on earth.