Pavel, I don't know about that "bottom" for lithium prices.  Maybe, maybe not.

However, the chart for lithium spot prices does seem to show at least a breathing spell from its seemingly normal decline.  Now we are back near the price that was evident around the 10th of August.  See the chart:

Daily Metal Price: Lithium Price (USD / Metric Ton) Chart for the Last 3 Months

The chart suggests a U turn, at least for the present.  No cigar just yet, but at least it is an improvement for right now.

Certainly no cause, yet, to wave the Pom Poms, but just enough to keep whatever is left of "hope" alive.

Okiedo