Two‐dimensional (2D) reduced graphene oxide (rGO) is often combined with metal oxides for energy‐storage applications, owing to its unique properties. Here, we compare the electrochemical performance of Nb 2 O 5 ‐rGO and amorphous carbon‐coated‐Nb 2 O 5 composites, synthesized in similar conditions.The composite made of Nb 2 O 5 and amorphous carbon (using 1,3,5‐triphenylbenzene as carbon source) outperforms the Nb 2 O 5 ‐rGO counterpart as high rate anode electrode material in Li‐ion and Na‐ion half‐cells and hybrid supercapacitors, delivering specific capacities of 134 mAh g ‐1 at 25 C against 98 mAh g ‐1 for the rGO‐based composite (in Li electrolyte) and 125 mAh g ‐1 at 20 C against 98 mAh g ‐1 (in Na electrolyte). The organic molecules, which are the precursor of the amorphous carbon, control the size and coat the metal oxide particles more efficiently, leading to more extensive carbon‐oxide contacts, which benefits the energy‐storage performance.

中文翻译：

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比较Nb2O5复合材料与还原的氧化石墨烯和非晶碳在Li和Na离子电化学存储设备中的性能

二维（2D）还原氧化石墨烯（rGO）由于其独特的性能，经常与金属氧化物结合用于储能应用。在这里，我们比较了在相似条件下合成的Nb 2 O 5 -rGO和无定形碳包覆的Nb 2 O 5复合材料的电化学性能.Nb 2 O 5和无定形碳（使用1,3,5-三苯基苯作为碳源）在锂离子和钠离子半电池和混合超级电容器中作为高速率阳极电极材料的性能优于Nb 2 O 5 ‐rGO对应材料，在25 C和98 mAh的条件下可提供134 mAh g -1的比容量基于rGO的复合材料的g ‐1（在Li电解液中）和在20 C时为125 mAh g ‐1相对于98 mAh g -1（在Na电解液中）。有机分子是无定形碳的前体，