Solid state battery breakthrough could double the density of lithium-ion cells

[erek]

Key Issues Hindering a Practical Lithium-Metal Anode

"Advanced liquid electrolytes can achieve dense Li deposition with a Coulombic efficiency (CE) of approximately 99%.
New characterization tools, including cryogenic electron microscopies and quantitative chemical analytical tools, have enhanced the current understanding of Li failure mechanisms.
Quantification of inactive Li reveals that the underlying cause of low CE in Li-metal anodes is the large amount of unreacted metallic Li.
The sluggish progress of battery technologies has drastically hindered the rapid development of electric vehicles and next-generation portable electronics. The lithium (Li) metal anode is critical to break the energy-density bottleneck of current Li-ion chemistry. After being intensively studied in recent years, the Li-metal field has developed new understanding and made unprecedented progress in preventing Li-dendrite growth and improving Coulombic efficiency, especially through development of advanced electrolytes and novel analytical tools. In this Opinion, we revisit the controversial issues surrounding Li metal as an anode based upon recent advances, revealing the underlying cause of Li-metal failure and the true role of ‘solid electrolyte interphase’ in Li-metal anodes. Finally, we propose future directions that must be taken in order for Li-metal batteries to become commercially viable."

https://newatlas.com/science/deakin-solid-state-battery-polymer-electrolyte/

 

[Dark12]

This is gonna bring my vaping to a whole notha level

 

[KazeoHin]

Look! More technology that will change the world when it never materializes!

 

[Conman]

Ah yes the weekly incredible battery breakthrough news story. Cant wait for the promising Cancer treatment breakthrough news story.

 

[Nenu]

Great info but I'm worried this will make energy more available during a fault or accident.
High power density batteries can already be bombs in the wrong circumstances.

 

[T_A]

Didnt we already have the weekly battery breakthrough news article ? Need to save some for next week

 

[Dark12]

Damn we got triggered [H]ard

 

[erek]

Didnt we already have the weekly battery breakthrough news article ? Need to save some for next week

is it true?

 

[1_rick]

This is gonna bring my vaping to a whole notha level

 

[DejaWiz]

And OPEC buys the rights/patents for it to stop it from ever getting to market in 5, 4, 3, 2...

 

[erek]

Didnt we already have the weekly battery breakthrough news article ? Need to save some for next week

Accurate quantum chemical energies for 133 000 organic molecules

"The energies of the 133 000 molecules in the GDB-9 database have been calculated at the G4MP2 level of theory and then were used to calculate their enthalpies of formation. This database contains organic molecules having nine or less atoms of carbon, nitrogen, oxygen, and fluorine, as well as hydrogen atoms. The accuracy of the G4MP2 energies was investigated on a subset of 459 of the molecules having experimental enthalpies of formation with small uncertainties. On this subset the G4MP2 enthalpies of formation have an accuracy of 0.79 kcal mol−1, which is similar to its accuracy previously reported for the smaller G3/05 test set. An error analysis of the theoretical enthalpies of formation of the 459 molecules is presented in terms of the size and type of the molecules. Three different density functionals (B3LYP, ωB97X-D, M06-2X) were also assessed on 459 molecules of accurate enthalpy data for comparison with the G4MP2 results. The G4MP2 energies for the 133 K molecules provide a database that can be used to calculate accurate reaction energies as well as to assess new or existing experimental enthalpies of formation. Several examples are given of types of reactions that can be predicted using the G4MP2 database of energies. The G4MP2 energies of the GDB-9 molecules will also be useful in future investigations of applications of machine learning to quantum chemical data."


https://phys.org/news/2019-11-battery-machine.html