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Gold/Mining/Energy : Electron Energy Storage
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From: Eric10/23/2023 10:06:33 AM
   of 964
 
New lithium-based solid electrolyte delivers dry air stability, efficient transport and high compatibility toward metallic lithium

21 October 2023

A team of researchers from the US and Canada have developed a new lithium-based solid-state electrolyte (SSE) material (Li9N2Cl3) that demonstrates excellent lithium compatibility and atmospheric stability and that enables high–areal capacity, long-lasting all–solid-state lithium metal batteries. An open-access paper on the work is published in Science Advances.
The Li9N2Cl3 facilitates efficient lithium-ion transport due to its disordered lattice structure and presence of vacancies. Notably, it resists dendrite formation at 10 mA/cm2 and 10 mAh/cm2 due to its intrinsic lithium metal stability. Furthermore, it exhibits robust dry-air stability.

Incorporating this SSE in Ni-rich LiNi0.83Co0.11Mn0.06O2 cathode-based all–solid-state batteries, we achieve substantial cycling stability (90.35% capacity retention over 1500 cycles at 0.5 C) and high areal capacity (4.8 mAh/cm2 in pouch cells). These findings pave the way for lithium metal batteries to meet electric vehicle performance demands.
—Li et al.


Calculated crystal structure of vacancy-rich Li9N2Cl3, Li+ (cyan), N3- (yellow), and Cl- (green). Li et al.

Resources
  • Weihan Li et al. (2023) “Lithium-compatible and air-stable vacancy-rich Li9N2Cl3 for high–areal capacity, long-cycling all–solid-state lithium metal batteries.” Sci. Adv. 9 doi: 10.1126/sciadv.adh4626

Posted on 21 October 2023 in Batteries, Electric (Battery), Market Background, Solid-state

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