In this article, we speculate on the possible mechanisms for Li enhancement origin in RGB stars based on a large data set of around 340299 stars collected from the GALAH survey combined with the Gaia astrometry. Data has 51982 low mass (M==1.80+/-0.14dex, of which 20 are super Li-rich with A(Li)>=3.20dex. Most of them appear to be in the red clump region which, when combined with stellar evolutionary time-scales on RGB, indicates that the Li enhancement origin may lie at RGB tip during He-flash rather than by external source of merging of sub-stellar objects or during luminosity bump evolution. Kinematic properties of sample stars suggest that Li-rich giants are relatively more prevalent among giants of thin disc compared to thick disc and halo.

Cone search capability for table J/MNRAS/484/2000/suptable (Stellar parameters of Li-rich giants with Li abundance of A(Li)>=1.8dex in our sample)