Acta Phys. -Chim. Sin. ›› 2025, Vol. 41 ›› Issue (8): 100089.doi: 10.1016/j.actphy.2025.100089

Special Issue: Electrochemical Separation and Recycling

• REVIEW • Previous Articles     Next Articles

Advanced electrode materials in capacitive deionization for efficient lithium extraction

Zeqiu Chen1, Limiao Cai1, Jie Guan1, Zhanyang Li1, Hao Wang2, Yaoguang Guo1,*(), Xingtao Xu3,*(), Likun Pan2,4,*()   

  1. 1 Shanghai Collaborative Innovation Centre for WEEE Recycling, School of Resources and Environmental Engineering, Shanghai Polytechnic University, Shanghai 201209, China
    2 Shanghai Key Laboratory of Magnetic Resonance, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
    3 Marine Science and Technology College, Zhejiang Ocean University, Zhoushan 316022, Zhejiang Province, China
    4 Institute of Magnetic Resonance and Molecular Imaging in Medicine, East China Normal University, Shanghai 200241, China
  • Received:2025-01-17 Revised:2025-04-03 Accepted:2025-04-07 Published:2025-06-07
  • Contact: Email: ygguo@sspu.edu.cn (Yaoguang Guo)lkpan@phy.ecnu.edu.cn (Likun Pan)xingtao.xu@zjou.edu.cn (Xingtao Xu)
  • Supported by:
    the National Natural Science Foundation of China(52400174); the National Natural Science Foundation of China(52270129); the National Natural Science Foundation of China(52370142); Shanghai Sailing Program(24YF2714000); Oriental Talent Youth Program, and Shanghai Shuguang Program(23SG52)

Abstract:

Efficient technologies for lithium extraction are progressively pivotal in response to the growing requirement for lithium in new energy applications. However, due to its high energy consumption and possible secondary pollution problems, traditional lithium absorption and recovery technologies, are limited in practical application and development. Capacitive deionization (CDI) demonstrates significant potential for lithium extraction with regard to efficiency, cost-effectiveness, and energy consumption. This review commences with bibliometric analysis to dissect the key research topics of lithium extraction via CDI, and presents a complete synopsis of recent advances in electrode materials for lithium extraction using CDI technology, along with various types of CDI systems that utilize these materials. This study elucidates in detail the main electrode materials used in CDI systems for lithium resource recovery——aqueous lithium ion electrode materials (including LiFePO4, LiMn2O4, LiNi1/3Co1/3Mn1/3O2) and their modification materials (including carbon nanotubes, graphene, MOFs). In addition, this paper discusses the improvement of lithium extraction efficiency through different CDI systems and evaluates the capability of various advanced electrode materials in these systems. The end of the paper emphasizes the application potential of machine learning in the domain of lithium extraction via CDI. The study is anticipated to deliver a strong theoretical basis and practical recommendations for advancing efficient lithium extraction systems that utilize CDI.

Key words: Capacitive deionization, Lithium extraction, Electrochemical, Electrode material