Mechanism, process, and equipment developments for electrochemical lithium extraction from ultra-low-lithium solutions using LiMn<sub>2</sub>O<sub>4</sub>

WANG Penglin; TAI Yunwei; QI Chenyu; GU Shuai; YU Jiangu

doi:10.11949/0438-1157.20260850

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Mechanism, process, and equipment developments for electrochemical lithium extraction from ultra-low-lithium solutions using LiMn₂O₄

更新时间：2026-08-04

- Mechanism, process, and equipment developments for electrochemical lithium extraction from ultra-low-lithium solutions using LiMn₂O₄
- CIESC Journal (2026)
- 作者机构：
  
  华东理工大学国家盐湖资源综合利用工程技术研究中心，上海200237
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20260850
  CLC： TQ 150.9
- Received：17 June 2026，
  
  Revised：2026-08-03，
  
  Accepted：04 August 2026，
- 稿件说明：
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WANG Penglin, TAI Yunwei, QI Chenyu, et al. Mechanism, process, and equipment developments for electrochemical lithium extraction from ultra-low-lithium solutions using LiMn₂O₄[J/OL]. CIESC Journal, 2026. DOI: 10.11949/0438-1157.20260850.
DOI：

WANG Penglin, TAI Yunwei, QI Chenyu, et al. Mechanism, process, and equipment developments for electrochemical lithium extraction from ultra-low-lithium solutions using LiMn₂O₄[J/OL]. CIESC Journal, 2026. DOI: 10.11949/0438-1157.20260850. DOI：

摘要

随着新能源汽车与储能产业快速发展，锂资源消耗大幅提升。为保障锂资源的持续供应，低品位锂资源开发势在必行。传统提锂工艺在原卤及超低含锂溶液中面临选择性不足、能耗高和药剂消耗大等问题，难以实现高效、经济提锂。电化学提锂技术依托外加电场驱动和离子筛材料的高选择性，为突破低浓度锂资源开发瓶颈提供了新途径。本文针对原卤及超低含锂溶液的锂资源利用所面临的挑战，开展了锰酸锂电化学提锂新技术开发与样机研制。首先通过构建典型盐湖原卤热力学数据库，揭示离子在卤水中的赋存状态；通过原位分析方法，研究锰酸锂的嵌脱/锂过程，明晰锰溶损机制；其次，通过突破膜电极制备“不可能三角”并优化装置流场，优化设计了电化学提锂装置，为原卤及超低含锂资源工业化利用提供理论依据和技术支撑。

Abstract

With the rapid development of electric vehicles and energy storage industries

the consumption of lithium resources has increased substantially. To ensure the sustainable supply of lithium resources

the development of low-grade lithium resources has become imperative. However

conventional lithium extraction processes suffer from insufficient selectivity

high energy consumption

and high reagent consumption when applied to raw brines and ultra-low-lithium solutions

making ef

ficient and economical lithium extraction difficult. Electrochemical lithium extraction

driven by an external electric field and enabled by the high selectivity of ion-sieve materials

provides a promising route to overcome the bottleneck in the utilization of low-concentration lithium resources. In this study

we addressed the challenges associated with lithium resource utilization from raw brines and ultra-low-lithium solutions by developing a LiMn

-based electrochemical lithium extraction technology and constructing a prototype device. First

a thermodynamic database for typical salt lake raw brines was established to reveal the occurrence states of ions in brine. Then

in situ analytical methods were employed to investigate the lithium intercalation/deintercalation process of lithium manganese oxide and to clarify the mechanism of manganese dissolution. Furthermore

by overcoming the “impossible triangle” in membrane electrode fabrication and optimizing the device flow field

an electrochemical lithium extraction device was designed and optimized. This work provides both theoretical guidance and technical support for the industrial utilization of raw brines and ultra-low-lithium resources.

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references

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Mechanism, process, and equipment developments for electrochemical lithium extraction from ultra-low-lithium solutions using LiMn2O4

DOI：10.11949/0438-1157.20260850

摘要

Abstract

关键词

Keywords

references

Mechanism, process, and equipment developments for electrochemical lithium extraction from ultra-low-lithium solutions using LiMn₂O₄