Novel LiAlO₂ Material for Scalable and Facile Lithium Recovery Using Electrochemical Ion Pumping.

Content Provider	Europe PMC
Author	Elmakki, Tasneem Zavahir, Sifani Hafsa, Umme Al-Sulaiti, Leena Ahmad, Zubair Chen, Yuan Park, Hyunwoong Shon, Ho Kyong Ho, Yeek-Chia Han, Dong Suk
Editor	Yentekakis, Ioannis V.
Copyright Year	2023
Abstract	In this study, α-LiAlO2 was investigated for the first time as a Li-capturing positive electrode material to recover Li from aqueous Li resources. The material was synthesized using hydrothermal synthesis and air annealing, which is a low-cost and low-energy fabrication process. The physical characterization showed that the material formed an α-LiAlO2 phase, and electrochemical activation revealed the presence of AlO2* as a Li deficient form that can intercalate Li+. The AlO2*/activated carbon electrode pair showed selective capture of Li+ ions when the concentrations were between 100 mM and 25 mM. In mono salt solution comprising 25 mM LiCl, the adsorption capacity was 8.25 mg g−1, and the energy consumption was 27.98 Wh mol Li−1. The system can also handle complex solutions such as first-pass seawater reverse osmosis brine, which has a slightly higher concentration of Li than seawater at 0.34 ppm.
Journal	Nanomaterials (Basel, Switzerland)
Volume Number	13
PubMed Central reference number	PMC10005760
Issue Number	5
PubMed reference number	36903773
e-ISSN	20794991
DOI	10.3390/nano13050895
Language	English
Publisher	MDPI
Publisher Date	2023-02-27
Access Restriction	Open
Rights License	Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2023 by the authors.
Subject Keyword	α-LiAlO2 activated carbon lithium recovery electrochemical ion pumping
Content Type	Text
Resource Type	Article
Subject	Chemical Engineering Materials Science