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Sodium superionic conductor (NASICON)‐type Na3V2(PO4)3 has attracted considerable interest owing to its stable three‐dimensional framework and high operating voltage; however, it suffers from a low‐energy density due to the poor intrinsic electronic conductivity and limited redox couples. Herein, the partial substitution of Mn3+ for V3+ in Na3V2(PO4)3 is proposed to activate V4+/V5+ redox couple for...
Nickel sulfides with high theoretical capacity are considered as promising anode materials for sodium‐ion batteries (SIBs); however, their intrinsic poor electric conductivity, large volume change during charging/discharging, and easy sulfur dissolution result in inferior electrochemical performance for sodium storage. Herein, a hierarchical hollow microsphere is assembled from heterostructured NiS/NiS...
2D transition metal dichalcogenides (TMDCs) and single‐atom catalysts (SACs) are promising electrodes for energy conversion/storage because of the layered structure and maximum atom utilization efficiency. However, the integration of such two type materials and the relevant sodium storage applications remain daunting challenges. Here, an ingenious diatomite‐templated synthetic strategy is designed...
Sodium‐ion batteries are in high demand for large‐scale energy storage applications. Although it is the most prevalent cathode, layered oxide is associated with significant undesirable characteristics, such as multiple plateaus in the charge−discharge profiles, and cation migration during repeated cycling of Na‐ions insertion and extraction, which results in sluggish kinetics, capacity loss, and structural...
Sodium‐ion batteries have huge potential in large‐scale energy storage applications. Layered Fe‐based oxides are one of the desirable cathode materials due to abundance in the earth crust and high activity in electrochemical processes. However, Fe‐ion migration to Na layers is one of the major hurdles leading to irreversible structural degradation. Herein, it is revealed that distinct Fe‐ion migration...
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