Progress on Lithium Sulfur Batteries
I read a nice article about Lithium Sulfur Batteries today. Sounds like really promising stuff.
http://earthsky.org/science-wire/new-all-solid-sulfur-based-...
Here's the fun bit from the paper:
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The sulfur compounds Li3PS4+n (n=2,3,5,6, and 8) were synthesized through solution reactions of Li3PS4 and
elemental sulfur in tetrahydrofuran (THF) under magnetic stirring without exposure to air or moisture. After the solids were fully dissolved, the
solution was dried under vacuum for 2 h at 80C. The recovered solids were lithium polysulfidophosphates. The cathode slurry was prepared by dispersing
Li3PS4+5 (60 wt%), WVA-1500 carbon (Mead Westvaco Corporation, 30 wt%), and PVC binder (10 wt%) in THF. No side reaction
occurred to the binder during the preparation of electrode because of the rapid evaporation of solvent.
A solid electrolyte pellet of Li3PS4 with a lithium metal anode was prepared by cold-pressing
nanoporousb-Li3PS4 (120 mg) on top of a thin lithium foil (50mm thick) under 240 MPa pressure in a 13 mm die. The slurry was
then coated on the other side of the pellet and dried under vacuum at 80C. The loading of the cathode materials is 0.25–0.60 mgcm^2, which is
equivalent to 0.15–0.36 mAhcm^-2. The final thickness of the pellets was 0.5 mm
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I'm trying to dig up the synthesis of Li3PS4 now. If anyone has a copy of
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Z. Liu, W. Fu, E. A. Payzant, X. Yu, Z. Wu, N. J. Dudney, J.Kiggans, K. Hong, A. J. Rondinone, C. Liang,J. Am. Chem. Soc.2013, 135, 975–978
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I would be most grateful if you could share.
Thanks!
[Edited on 7-6-2013 by ElizabethGreene]
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