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Fast-charging sodium-ion batteries are severely constrained by sluggish Na+ diffusion, structural instability, and rapid capacity fading in layered anodes, representing a major challenge for high-power energy storage applications. Here, a Co and Se co-doping strategy is implemented on MoS2 (Co-MoS1.8Se0.2/C) to stabilize the metallic 1T-like phase, expand interlayer spacing, and introduce abundant defect sites, generating additional redox-active centers that facilitate rapid and reversible Na+ insertion and extraction. Cobalt doping serves as a catalytic regulator, promoting uniform SEI formation and enhancing interfacial stability, whereas selenium doping reduces Na+ diffusion barriers and alleviates strain induced by volumetric changes. A conductive carbon framework supports the nanosheet structure, prevents restacking, and buffers mechanical stress, ensuring structural integrity during extreme-rate cycling. The Co-MoS1.8Se0.2/C electrode achieves a reversible capacity of 250 mAh g-1 at 20 A g-1, corresponding to full charge/discharge in approximately 15 s, and maintains long-term cycling stability over 1400 cycles at 5 A g-1. Structural analyses reveal partial electron transfer from Co and Se to Mo upon intercalation, triggering reorganization of Mo 4d orbitals and inducing a spontaneous 2H-to-1T phase transition, which enhances electrical conductivity. Reversible layered-to-metallic transformation occurs alongside the formation of a stable SEI layer, further promoting electrochemical kinetics and interfacial stability. The synergistic integration of dual-element doping and carbon framework design significantly improves structural robustness and sodium storage performance.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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