Hi All,

I'm working on putting a ceramic-based solid-state electrolyte piece into a CR2032 cell with Li metal foil as electrodes.

Most of the literature deposited thin layers of Au onto the surface and then attached Li foils, using a heat plate to slightly melt Li to improve adherence. Here are several questions:

- The Li foil seemed to react with Au and produced a pink-ish color on the Li foil slightly above 200C. The pink foil was not attached to the garnet pellet but on the stainless steel spacer. If Li just heated on the garnet pellet, the pink foil curled upwards. Is this a normal situation? (everything in an Ar GB)

- Any better way to deal with the temperature difference across the Li/garnet/Li stack when heating up? I'm now using an Al foil + Al lid to contain the stack.

- How do we add pressure when the Li/garnet/Li stack is heated? Most of the literature says

"press gently by hand" but no other detailed descriptions. One thought I have had is heating the whole CR2032 together but the gasket is PP and won't survive at 200C.

- How do you make sure the pellet sealed inside is not broken...?

Thanks so much for any discussions!