REI 3.1.5 Build 30
TechReborn 3.0.17 build 250
RebornCore 4.0.19 build 187
libCD 1.3.2

Whenever I click (or Key R or U) on a recipe for a filled cell in REI, I am brought to the same recipe list for any fluid, usually for Empty Cells. I am unable to find out how to obtain certain fluids or how to use them in other recipes (i.e. How to obtain lithium for lithium batteries).

Please let me know if you need any further information.

Lithium comes from clay, sodium from the same. Methane is centrifuging food/rubber wood, what else?

Yes, I have been able to find most of these recipes using a Gregtech4 wiki, but the fact remains that they dont work yet in REI