Aqueous decoupling batteries: Exploring the role of functional ion‐exchange membrane
Shuyue Li,
Lujing Wang,
Xiaoman Li,
Heng Jiang,
Fei Du
Affiliations
Shuyue Li
Shaanxi Key Laboratory of Nanomaterials and Nanotechnology School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology Xi'an the People's Republic of China
Lujing Wang
Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), State Key Laboratory of Superhard Materials College of Physics, Jilin University Changchun the People's Republic of China
Xiaoman Li
Key Laboratory of Medical Cell Biology, Ministry of Education China Medical University Shenyang the People's Republic of China
Heng Jiang
Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), State Key Laboratory of Superhard Materials College of Physics, Jilin University Changchun the People's Republic of China
Fei Du
Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), State Key Laboratory of Superhard Materials College of Physics, Jilin University Changchun the People's Republic of China
Abstract The relentless pursuit of sustainable and safe energy storage technologies has driven a departure from conventional lithium‐based batteries toward other relevant alternatives. Among these, aqueous batteries have emerged as a promising candidate due to their inherent properties of being cost‐effective, safe, environmentally friendly, and scalable. However, traditional aqueous systems have faced limitations stemming from water's narrow electrochemical stability window (~1.23 V), severely constraining their energy density and viability in high‐demand applications. Recent advancements in decoupling aqueous batteries offer a novel solution to overcome this challenge by separating the anolyte and catholyte, thereby expanding the theoretical operational voltage window to over 3 V. One key component of this innovative system is the ion‐selective membrane (ISM), acting as a barrier to prevent undesired crossover between electrolytes. This review provides a comprehensive overview of recent advancements in decoupling aqueous batteries, emphasizing the application of various types of ISMs. Moreover, we summarize different specially designed ISMs and their performance attributes. By addressing the current challenges ISMs face, the review outlines potential pathways for future enhancement and development of aqueous decoupling batteries.
