T-Nb₂O₅/reduced graphene oxide nanohybrids were fabricated via the hydrothermal attachment of Nb₂O₅ nanowires to dispersed graphene oxide nanosheets followed by a high-temperature phase transformation. Electrochemical measurements showed that the nanohybrid anodes possessed enhanced reversible capacity and superior cycling stability compared to those of a pristine T-Nb₂O₅ nanowire electrode. Owing to the strong bonds between graphene nanosheets and T-Nb₂O₅ nanowires, the nanohybrids achieved an initial capacity of 227 mAh·g⁻¹. Additionally, non-aqueous asymmetric supercapacitors (ASCs) were fabricated with the synthesized nanohybrids as the anode and activated carbon as the cathode. The 3 V Li-ion ASC with a LiPF₆-based organic electrolyte achieved an energy density of 45.1 Wh·kg⁻¹ at 715.2 W·kg⁻¹. The working potential could be further enhanced to 4 V when a polymer ionogel separator (PVDF-HFP/LiTFSI/EMIMBF₄) and formulated ionic liquid electrolyte were employed. Such a quasi-solid state ASC could operate at 60 °C and delivered a maximum energy density of 70 Wh·kg⁻¹ at 1 kW·kg⁻¹.

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通过将Nb ₂ O ₅纳米线水热连接到分散的氧化石墨烯纳米片上，然后进行高温相变，制得T -Nb ₂ O ₅ /还原的氧化石墨烯纳米杂化物。电化学测量表明，与原始T -Nb ₂ O ₅纳米线电极相比，纳米杂化阳极具有增强的可逆容量和优异的循环稳定性。由于石墨烯纳米片和T -Nb ₂ O ₅纳米线之间的牢固键合，纳米杂化物的初始容量为227 mAh·g ^-1。此外，以合成的纳米杂化物为阳极，活性炭为阴极，制备了非水不对称超级电容器（ASC）。具有基于LiPF ₆的有机电解质的3 V锂离子ASC在715.2 W·kg ^-1时实现了45.1 Wh·kg ^-1的能量密度。当使用聚合物离子凝胶隔膜（PVDF-HFP / LiTFSI / EMIMBF ₄）和配制的离子液体电解质时，工作电位可以进一步提高到4V 。这样的准固态ASC可以在60℃下操作，并且在1kW·kg ^-1下提供70Wh·kg ^-1的最大能量密度。

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