电渗析
水溶液
氧化还原
电解质
卤水
流动电池
海水
电池(电)
磷酸钒锂电池
锂(药物)
材料科学
储能
电化学
化学工程
化学
膜
无机化学
电极
地质学
有机化学
功率(物理)
医学
物理
物理化学
内分泌学
工程类
生物化学
海洋学
量子力学
作者
Lei Wang,Stefanie Arnold,Panyu Ren,Qingsong Wang,Jun Jin,Wen Zhang,Volker Presser
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2022-09-23
卷期号:7 (10): 3539-3544
被引量:1
标识
DOI:10.1021/acsenergylett.2c01746
摘要
Lithium-ion batteries are the primary power source for electric vehicles and portable electronic devices, creating a massive demand to mine and extract lithium. So far, lithium extraction has focused on brine and geological deposits. Yet, access to the enormous amount of lithium (at low concentration) in the earth’s oceans and other aqueous media remains challenging. Electrodialysis with Li-selective ceramic membranes could effectively separate lithium from seawater but at a high energy cost. Reversible electrochemical processes, like redox flow batteries, can overcome the limitation of electrodialysis-based systems. Herein we propose a system combining Li-selective ceramic membranes and a simple redox flow electrolyte to accomplish continuous lithium recovery from seawater. The lithium-extraction redox flow battery (LE-RFB) extracts dissolved lithium with a purity of 93.5% from simulated seawater, corresponding to a high Li/Mg selectivity factor of about 500.000:1. Benefiting from a low operating voltage, 1 g of lithium is extracted with only 2.5 Wh of energy consumption.
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