三聚氰胺
电极
导电体
锂(药物)
卤水
材料科学
电导率
复合材料
化学工程
化学
工程类
有机化学
医学
物理化学
内分泌学
作者
Junyi Zhang,Yuan Zhou,Chunxi Hai,Yawen Gao,Yan Zhao,Yanxia Sun,Shengde Dong,Xin He,Qi Xu,Jitao Chen,Hongli Su,Luxiang Ma
出处
期刊:Desalination
[Elsevier]
日期:2024-02-28
卷期号:579: 117457-117457
被引量:3
标识
DOI:10.1016/j.desal.2024.117457
摘要
Improving the kinetic performance of thick electrodes is key to enhancing lithium extraction from salt lakes. Nano-melamine foam (MF), known for its unique porous structure, is ideal for building a three-dimensional (3D) conductive network, thereby boosting electrode kinetics. In our study, we developed a thick electrode (20 mg·g−1) with a 3D-conductive network by in-situ growing LiFePO4 (LFP) onto a nanoscale MF substrate. This electrode exhibited superior kinetic performance and a high lithium adsorption capacity in brine, achieving up to 32.8 mg·g−1 in just 10 min. Remarkably, even in simulated brine with a high Mg2+/Li+ ratio, it maintained an average coulomb efficiency of 62 %, significantly lowering the Mg2+/Li+ ratio from 65.6 to 0.47. It also showed exceptional stability in actual brine, maintaining an average coulomb efficiency of about 56.6 %. Our development of this high conductivity, thick electrode provides new insights into efficient lithium extraction methods.
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