Recent Progress in the Emerging Modification Strategies for Layered Oxide Cathodes toward Practicable Sodium Ion Batteries

Abstract

Low‐cost sodium‐ion batteries (SIBs) have been extensively considered as a supplement or even a replacement for successful lithium‐ion batteries. However, the practical application of SIBs is limited by their energy density and cyclic performance, which are mainly constrained by the cathode side. Therefore, the development of advanced cathode materials is essential for the practical application of SIBs. Among the various cathode materials, layered transition metal oxides (LTMOs) are highly promising candidates due to their compact crystal structure, low‐cost, ease of preparation, and similarities to successful Li‐based LTMOs. Unfortunately, the bottleneck issues faced by Na‐based LTMOs, such as severe phase transitions, sluggish diffusion kinetics, and interface deterioration, pose significant challenges in achieving high‐performance cathodes. In this review, a comprehensive overview and summary of recently reported modification strategies for layered oxides are provided and the structure–function–performance relationship is refined. A perspective on the outlook and development direction for Na‐based LTMOs cathodes is also provided. This review comprehensively explores the modification strategies of Na‐based LTMOs, providing a new horizon for future research on Na‐based LTMOs.

The innovative design of high-performance layered transition metal oxides for sodium-ion batteries from a commercial perspective

“…Thus, improving the CE needs more attention and research. 71 The development of anodes, additives, electrolytes, binders, separators, and other components are all important for sodium-ion full batteries. Close communication between academic and industrial organizations is also needed to realize commercial applications of SIBs in the near future.…”

Paper-Based Composite Separator with Thermotolerant and Flame-Retardant Sodium Silicate Sheath for High-Performance Sodium-Ion Batteries

“…In 2023, sodium-ion batteries (SIBs) were commercialized in the large-scale energy storage market due to the earth-abundant sodium resources and similar electrochemical characteristics to lithium-ion batteries (LIBs). − The characteristics of the lower melting point and higher chemical activity of sodium in comparison to those of lithium also indicate that SIBs are more likely to pose a higher risk of thermal runaway than LIBs. The separators, as one of the important components in SIBs, are located between the positive and negative electrodes of the battery and perform the important role of blocking the contact between the electrodes, storing the liquid electrolyte, and transporting ions. , Thus, the ability of the separator to transport ions and the stability of its structure profoundly affect the electrochemical and safety performance of SIBs, and it is also regarded as one of the important aspects of improving the electrochemical and safety performance of SIBs.…”

High-Entropy Configuration Strategy to Build High Performance Na-Ion Layered Oxide Cathodes Derived from Simple Techniques

“…3 Cathode material is one of the critical factors in the development of SIB. Currently, layered transition metal oxides, 4,5 Prussian blue analogs, 6,7 polyanion frames 8,9 and other materials can be found as the cathode components of sodium-ion batteries. O3 and P2 type layered transition metal oxides (Na x TMO 2 , x ≤ 1, TM= transition metal) are the focus of the investigation.…”

“…Cathode material is one of the critical factors in the development of SIB. Currently, layered transition metal oxides, , Prussian blue analogs, , polyanion frames , and other materials can be found as the cathode components of sodium-ion batteries. O3 and P2 type layered transition metal oxides (Na x TMO 2 , x ≤ 1, TM= transition metal) are the focus of the investigation. , But in fact, O3 layered oxides are considered one of the most promising cathode materials due to their high energy density, straightforward manufacture and sufficient storage space for Na + . , …”