FePO4-Zn/Pt混合电池系统电化学萃取高浓度Mg2+盐湖盐水中的Li+

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta Pub Date : 2025-09-20 DOI:10.1016/j.electacta.2025.147223

Qian Zhang , Xinwen Li , Kang Chen , Ying Hu , Rongmei Liu , Guixiang Qian , Zhongliang Tian , Chao Yang

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引用次数: 0

摘要

研究了一种用于盐湖卤水提锂的FePO4-Zn/Pt混合动力电池系统。首先，将FePO4-Zn电池用于锂嵌入形成LiFePO4，随后将其重新组装成LiFePO4- pt电池用于锂的脱嵌。结果，得到了不受金属阳离子干扰的富Li+水溶液。该系统不需要离子交换膜，因为Pt电极与盐水分离，从而防止了杂质阳离子的污染。在含0.25 g/L Li+和73 g/L Mg2+的卤水中进行解吸，在含0.25 g/L Li+的溶液中进行解吸，经过两个循环后，只有少量的Mg2+转移到氯化锂溶液中，实现了有效的锂提取和富集，效率为80.6%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

FePO4-Zn/Pt hybrid battery system for the electrochemical extraction of Li+ from salt lake brine with high Mg2+ concentrations

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FePO4-Zn/Pt hybrid battery system for the electrochemical extraction of Li+ from salt lake brine with high Mg2+ concentrations

This study presents a FePO₄-Zn/Pt hybrid power battery system designed for lithium extraction from salt lake brines. Initially, the FePO₄-Zn battery is utilized for lithium intercalation to form LiFePO₄, which is subsequently reassembled into a LiFePO₄-Pt battery for lithium deintercalation. As a result, a Li⁺-rich aqueous solution, free from interfering metal cations, is obtained. The system eliminates the need for ion-exchange membranes, as the Pt electrode remains separated from the brine, thereby preventing contamination by impurity cations. When applied to a brine containing 0.25 g/L Li⁺ and 73 g/L Mg²⁺, followed by desorption in a solution of 0.25 g/L Li⁺, only a minimal amount of Mg²⁺was transferred to the lithium chloride solution after two cycles, achieving effective lithium extraction and enrichment with an efficiency of 80.6 %.

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来源期刊

Electrochimica Acta 工程技术-电化学

CiteScore

11.30

自引率

6.10%

发文量

1634

审稿时长

41 days

期刊介绍： Electrochimica Acta is an international journal. It is intended for the publication of both original work and reviews in the field of electrochemistry. Electrochemistry should be interpreted to mean any of the research fields covered by the Divisions of the International Society of Electrochemistry listed below, as well as emerging scientific domains covered by ISE New Topics Committee.