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1.0 M lithium bis(trifluoromethanesulfonyl), lithium perchlorate, lithium nitrate, THF, Commercial Seperators, Dioxolanes, Dimethoxyethanes, and igMWCNT masterbatches

A project log for WRONG PROJECT 2

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MECHANICUSMECHANICUS 10/01/2015 at 05:570 Comments

Going forward I need a few more materials to make these things work as they should.

Lithium-Sulfur-Silicon Battery

I should receive some commercial poly-propylene semi permeable lithium ion battery seperator in the mail anyday from china.

The electrolyte is the most debated section of these batteries in the literature. I have attempted solid electrolytes this past week using PMMA to no success.

It seems going forward a liquid electrolyte will be the simplest way to demonstrate viability. Ultimately a solid sol-gel PEO electrolyte will be necessary but I need quite a bit of more equipment before I can process PEO.

1.0 Molar lithium b(TFMS) the standard in academia for electrolytes and prelithiation of the anode, costs around 60 dollars for 10 grams and should be immediately ruled out for commercial applications due to cost. This leaves me with using lithium perchlorate for pre lithiation of the anode and for the 1 molar solution in the electrolyte.

Using LiOH in the electrolyte was folly as it doesn't solvate well in PEG 400 but that was not indicated in any resource I could find.

Also using PEG 400 solely for the electrolyte will not work, instead I will probably be using a mixture of Tetrahydrofuran (THF) 1000Ml Composite Bottle Reagent Grade, 1,3-Dioxolane, =>98.0%, stabilized, Synthesis Reagent, 25mL, 1,2-Dimethoxyethane, =>99.0%, Analytical Reagent, 30mL. And for the lithium in the electrolyte .1 molar lithium nitrate, and 1 molar lithium perchlorate.

Pre lithiation can be achieved with lithium salts and silicon in a ball mill using hexane as a lubricant???? http://pubs.acs.org/doi/abs/10.1021/ic501923s I love staring at abstracts trying to make sense of things, I am hoping they didn't use Li b(TFMS) in this study and used something more like lithium perchlorate. It's worth a shot and I am going to try it as a step in between the, hydrothermal reduction of silicon dioxide and oxidized nano carbons into silicon carbide, and the final step of blending with the binder and applying to the charge carrier.

Artificial Muscle

I am starting to question if this is wholly feasible, I am on the edge of buying a 15% by weight igMWCNT to 85% PA 6/6 masterbatch from cheaptubes.com I know for a fact it will probably be too brittle but combining something more akin to 6% igMWCNT and 3% reduced graphene oxide would probably work better and retain more of pristine PA6/6's mechanical properties. However, cheaptubes really means cheap tubes and nothing else all their graphene is synthesized and is incredibly expensive. The resistivity of the 15% master batch is spot on with what I need for this to work at 2 ohms per cm. Mike at cheap tubes hasn't gotten back to me yet on the physical characteristics of these masterbatches. There is always the option of twisting these up warm, but I just don't have any of that figured out yet, this will work in some form or fashion it is not obvious, however.

Work continues on designing a water cooling system by 3d printing molds for molds I will have more on this later as I have already release too many defunct mold models.

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