Zhao Chenyang, Liu Ying, Shao Yang, Li Feng, Zhao Dong, Yang Xiaoping, Cheng Fang, Zhang Zhengfu
Faculty of Materials Science and Engineering, Kunming University of Science and Technology Kunming 650093 P. R. China
Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 P. R. China
RSC Adv. 2025 Jun 18;15(26):20695-20711. doi: 10.1039/d5ra02080h. eCollection 2025 Jun 16.
Aqueous sodium-ion batteries (ASIBs) have emerged as promising candidates for large-scale energy storage systems due to their superior safety, cost-effectiveness and environmental friendliness. Among various anode materials, sodium titanium phosphate (NaTi(PO), NTP) as a NASICON-type compound with its high theoretical capacity, excellent sodium ion conductivity and good structural stability. However, the electrochemical performance of NTP anodes used for ASIBs is significantly hindered by electrode-electrolyte interface instability resulting from the hydrogen evolution reaction (HER), electrode dissolution and unstable solid electrolyte interphase (SEI) in aqueous electrolytes. This review systematically outlines recent advances and technological innovations in the design strategies of NTP anode/electrolyte interfaces to address the previously underexplored interfacial challenges between NTP anode materials and aqueous electrolytes in ASIBs. Subsequently, the proposed solutions, including electrolyte compositional optimization, interfacial coating modification and SEI interface modulation, to the abovementioned issues are correspondingly summarized and discussed. Finally, the development direction and future prospective of NTP anode/electrolyte interface research is further discussed, providing a guidance for the design of high-performance ASIBs.
水系钠离子电池（ASIBs）因其卓越的安全性、成本效益和环境友好性，已成为大规模储能系统的有力候选者。在各种负极材料中，磷酸钛钠（NaTi(PO)，NTP）作为一种NASICON型化合物，具有高理论容量、优异的钠离子传导率和良好的结构稳定性。然而，用于ASIBs的NTP负极的电化学性能受到析氢反应（HER）、电极溶解以及水系电解质中不稳定的固体电解质界面（SEI）导致的电极-电解质界面不稳定性的显著阻碍。本文综述系统地概述了NTP负极/电解质界面设计策略的最新进展和技术创新，以应对ASIBs中NTP负极材料与水系电解质之间此前未充分探索的界面挑战。随后，相应地总结并讨论了针对上述问题提出的解决方案，包括电解质成分优化、界面涂层改性和SEI界面调控。最后，进一步讨论了NTP负极/电解质界面研究的发展方向和未来前景，为高性能ASIBs的设计提供指导。
