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CarlF · 20-10-2019, 20:13

Frankly, a few guys in India with a million bucks are just noise compared to billions of dollars (yes with a "B") of investment in battery technology going on. This includes incredibly smart people in places like Argonne National Labs, MIT, and Caltech in the US. A huge amount going on in Europe and Asia too.

Aluminum air batteries have been around for decades. So far, none are rechargeable. Mostly used by the military who don't particularly care about cost or recharging.

One of the most interesting areas right now are flow batteries which move liquids between two tanks. Unfortunately NOT suitable for boats but great for a utility that has places to put 5000 gallon tanks. If you have an hour to kill, here's more:

https://www.youtube.com/watch?v=tmdtAoHvDDA

valhalla360 · 20-10-2019, 23:23

Quote:

Originally Posted by john61ct

When the only people disputing the facts are non-scientists, paid shills for commercial interests and their dupes, fair to say there is a consensus among honest scientists.

....

Many are pure evil, others just stupid victims, doesn't matter to me, same result, should not be allowed out in polite society.

All depends on who's paid shills align with your agenda.

Do you think the climate change specialist don't realize that they only get the next grant if the next ice age...oops...global warming...oops...climate change is found to be "real"?

Right now the vast majority of payments are going to one side and that side also is dominating the media, so they shout down anyone who questions the science....calling them "pure evil", "stupid victims", "shouldn't be allowed out in polite society"...etc...

Back on topic, lots of fun experiments with batteries and I hope there is some great breakthrough but so far its all sci-fi or in a few cases specialty products.

CatNewBee · 21-10-2019, 00:43

Thanks god, there are 4 seasons, so 4 times per year undeniable "truth" of changing climate per year.

Brilliant idea for perpetual squeezing out money and scaring the kids to death. No more need for fairytales about Hensel & Greta or Snowwhite etc.

**GordMay** · 21-10-2019, 02:04

Quote:

Originally Posted by Dockhead

Aluminum-air batteries have been around for decades. See https://en.m.wikipedia.org/wiki/Alum...%93air_battery

Indeed.

New battery technologies and announcements are a dime a dozen, but there’s reason to think that a workable Al-air technology could deploy within the next 2-5 years. Multiple manufacturers are working on commercializing designs, and aluminum is abundant and relatively cheap.

A recent study, affiliated with UNIST, has introduced a novel electric vehicle (EV) battery technology, that is more energy efficient than gasoline-powered engines. The new technology involves replacing battery packs, instead of charging them, bypassing the slow-charging issues of existing EV battery technology. It also provides lightweight, high-energy density power sources with little risk of burning or explosion. This breakthrough has been led by Professor Jaephil Cho and his research team in the School of Energy and Chemical Engineering at UNIST. Their findings have been published (open source) in Nature Communications.
The researchers developed a new type of aluminum-air flow battery for EVs. The new battery outperforms existing lithium-ion batteries in terms of higher energy density, lower cost, longer cycle life, and higher safety. Aluminum-air flow batteries are primary cells, which means they cannot be recharged via conventional means. In EVs, they produce electricity by replacing the aluminum plate and electrolyte. Considering the actual energy density of gasoline and aluminum of the same weight, aluminum is superior.
Gasoline has an energy density of 1,700 Wh/kg, while an aluminum-air flow battery exhibits a much higher energy density of 2,500 Wh/kg with its replaceable electrolyte and aluminum. This means with 1kg of aluminum, we can build a battery that enables an electric car to run up to 700km.

“Seed-mediated atomic-scale reconstruction of silver manganate nanoplates for oxygen reduction towards high-energy aluminum-air flow batteries”
~ by Jaechan Ryu et al, “Nature Communications” Article number: 3715 (2018)
Abstract
Aluminum–air batteries are promising candidates for next-generation high-energy-density storage, but the inherent limitations hinder their practical use. Here, we show that silver nanoparticle-mediated silver manganate nanoplates are a highly active and chemically stable catalyst for oxygen reduction in alkaline media. By means of atomic-resolved transmission electron microscopy, we find that the formation of stripe patterns on the surface of a silver manganate nanoplate originates from the zigzag atomic arrangement of silver and manganese, creating a high concentration of dislocations in the crystal lattice. This structure can provide high electrical conductivity with low electrode resistance and abundant active sites for ion adsorption. The catalyst exhibits outstanding performance in a flow-based aluminum–air battery, demonstrating high gravimetric and volumetric energy densities of ~2552 Wh kgAl−1 and ~6890 Wh lAl−1 at 100 mA cm−2, as well as high stability during a mechanical recharging process.
Full article ☞ https://www.nature.com/articles/s41467-018-06211-3

Hartings · 21-10-2019, 02:55

Quote:

Originally Posted by john61ct

When the only people disputing the facts are non-scientists, paid shills for commercial interests and their dupes, fair to say there is a consensus among honest scientists.

Tobacco, pharma, chemicals, sodapop & processed food makers, all try the same crap, and lobbyists, politicians, PR/social media/propaganda experts line up for the billions they spend.

Many are pure evil, others just stupid victims, doesn't matter to me, same result, should not be allowed out in polite society.

Hear, hear. The truth.