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1.D.242.  The Dual Ion Channel/Conductor (DICC) Family 

The development of energy-efficient and environmentally friendly lithium extraction techniques is essential to meet the growing global demand for lithium-ion batteries. Ma et al. 2023 have developed a dual-channel ion conductor membrane for a concentration-driven lithium-selective ion diffusion process. The membrane was based on a porous lithium-ion conductor, and its pores were modified with an anion-exchange polymer. Thus, the sintered lithium-ion conductors provided highly selective cation transport channels, and the functionalized nanopores with positive charges enabled the complementary permeation of anions to balance the transmembrane charges. As a result, the dual-channel membrane realized an ultrahigh Li+/Na+ selectivity of approximately 1389 with a competitive Li+ flux of 21.6 mmol.m-2.h(-1) in a diffusion process of the LiCl/NaCl binary solution, which was capable of further maintaining the high selectivity over 7 days of testing. Therefore, this work demonstrates the potential of the dual-channel membrane design for high-performing lithium extraction from aqueous resources with low energy consumption and minimal environmental impact ()Ma et al. 2023.

References associated with 1.D.242 family:

Ma, H., Y. Xia, Z. Wang, T. Xu, G.P. Simon, and H. Wang. (2023). Dual-Channel-Ion Conductor Membrane for Low-Energy Lithium Extraction. Environ Sci Technol 57: 17246-17255. 37918342