Lithium capture device

A lithium-selective support, comprising:

• a polymeric support material comprising at least one of a porous polymeric membrane material, at least one of a polymeric fiber or filament, a yarn including a plurality of at least one of the polymeric fibers or filaments, or a fabric of at least one of the polymeric fibers or filaments, the polymeric support material being functionalized, the at least one functional group configured to at least one of directly chelate lithium cations, be chemically modified to facilitate chelating of lithium cations, or serve as nucleation sites for the growth of small particles of at least one of crystalline or amorphous solids, the at least one of crystalline or amorphous solids, when present, configured to serve as lithium-selective adsorbents one of directly or with further treatment.

A lithium capture device, comprising:

• a plurality of polymer-grafted components, each polymer-grafted component comprising at least one of a plurality of fibers or a membrane, each polymer-grafted component carried relative to the support structure, each polymer-grafted component incorporating a plurality of functionalized sites having an aluminum-based additive associated therewith, the given aluminum-based additive having an affinity for adsorbing at least one of lithium or a lithium salt.