Low-cost and stable Li1.5Al0.3Ti1.7Si0.2P2.8O12 glass–ceramics for lithium extraction from seawater

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY Journal of Solid State Electrochemistry Pub Date : 2024-07-22 DOI:10.1007/s10008-024-06015-0

Bo Chang, Yigang Wang, Yue Dai, Mingjie Du, Haoshen Zhou, Ping He

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Abstract

Rapid development of electronic and grid storage technologies based on lithium-ion batteries are leading to tight supply of lithium resources in the future. Extracting lithium from seawater can completely solve the problem of lithium resource shortage. An electro-deposition method based on a lithium superionic conductive solid-state electrolyte, Li_1.5Al_0.5Ge_1.5(PO₄)₃ (LAGP), has been reported to obtain metallic lithium from seawater. However, expensive LAGP increases the cost of lithium extraction, while Li_1.3Al_0.3Ti_1.7(PO₄)₃ (LATP) with relatively lower prices cannot meet the stable requirements. Herein, a low-cost, stable glass–ceramics, Li_1.5Al_0.3Ti_1.7Si_0.2P_2.8O₁₂ (LATSP), has been prepared for lithium extraction from seawater. The LATSP glass–ceramics show good selectivity towards Li⁺ and exhibit a high ionic conductivity of 3.98 × 10⁻⁴ S cm⁻¹ at 22 °C. After soaking in simulated seawater, LATSP showed much better stability than LATP, comparable to LAGP. The resultant LATSP glass–ceramics was successfully employed in a seawater lithium extraction device, with a high lithium extraction Coulombic efficiency of 94.0%. Moreover, the LATSP exhibits an ionic conductivity of 2.80 × 10⁻⁴ S cm⁻¹ and maintains a complete structure after 45 h of lithium extraction. This work presents an effective and practical Li-ion conducting membrane for lithium extraction from seawater.

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用于从海水中提取锂的低成本、稳定的 Li1.5Al0.3Ti1.7Si0.2P2.8O12 玻璃陶瓷

以锂离子电池为基础的电子和电网存储技术的快速发展导致未来锂资源供应紧张。从海水中提取锂可以彻底解决锂资源短缺的问题。据报道，一种基于锂超离子导电固态电解质 Li1.5Al0.5Ge1.5(PO4)3 (LAGP) 的电沉积方法可从海水中提取金属锂。然而，昂贵的 LAGP 增加了锂提取的成本，而价格相对较低的 Li1.3Al0.3Ti1.7(PO4)3 (LATP) 则无法满足稳定的要求。本文制备了一种低成本、稳定的玻璃陶瓷 Li1.5Al0.3Ti1.7Si0.2P2.8O12 (LATSP)，用于从海水中提取锂。LATSP 玻璃陶瓷对 Li+ 具有良好的选择性，在 22 °C 时离子电导率高达 3.98 × 10-4 S cm-1。在模拟海水中浸泡后，LATSP 显示出比 LATP 更好的稳定性，可与 LAGP 相媲美。制备出的 LATSP 玻璃陶瓷被成功应用于海水锂萃取装置，锂萃取库仑效率高达 94.0%。此外，LATSP 的离子电导率为 2.80 × 10-4 S cm-1，并且在锂萃取 45 小时后仍能保持完整的结构。这项研究为从海水中提取锂提供了一种有效而实用的锂离子传导膜。

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来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.