Magnesium-hydrogen slurry claims 10 times the energy density of lithium batteries, with fast refueling

[legsofbeer]

Interesting, and I'm glad to see new things being done with energy chemistry. But... still requires a hydrogen powered fuel cell, hydrogen is not an economically viable fuel when obtained from electrolysis of water vs. cracking fossil fuels. I could see this finding niche applications where power density is key and money is no barrier. https://newatlas.com/energy/powerpaste-hydrogen-fuel-paste/

 

[goldconch]

Very cool @legsofbeer. Lithium-ion has had a 20 year run, but the energy density to environmental cost is way out of whack. There are a whole bunch of cleaner/cheaper alternative mediums for capacitation that have been under development for years, some still not quite ready for prime time, others closer to the finish line. Mr Bezos applying himself to the $10Bln Bezos Earth Fund (and with Breakthrough Energy Ventures) will likely accelerate some of this battery tech to commercial reality. Magnesium paste seems like it might be a bit of a fire hazard in some applications.

Another pathway to immediately decarbonize is to store renewable sourced energy is to skip the battery component altogether and store energy as transportable liquid "green" ammonia, in existing LNG/propane tankers, and burn that as a combustible fuel in existing diesel engines (with small conversion cost). Billions are pouring into green ammonia plant capacity currently. Man Energy is developing NH3 marine engine and conversion kits are coming for others.