Microporous Polymer Sorbents for Direct Lithium Extraction
Michael A. Baird,
Ryan S. Kingsbury,
Yunfei Wang
et al.
Abstract:Lithium extraction from brines is essential to onshoring
battery
supply chains. Yet, cation-exchange sorbents often exhibit poor selectivity
and require pH swings, contributing to increased capital and operating
expenditures. Here, we develop lithium extraction sorbents that obviate
pH swings by reversibly binding Li+ within aqueous brine-compatible
polymers of intrinsic microporosity (AquaPIMs) bearing metal-complexing
aza-crown-ether pendants. We conduct selectivity screens with synthetic
and natural brines,… Show more
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