Novel hierarchically structured V₂O₃@N-doped carbon nanosheet arrays on nickel foam (V₂O₃@NC NANF) was fabricated by simple solvothermal reaction and subsequently calcination process. The porous nanosheet arrays are constructed by V₂O₃ nanoparticles that is uniformly coated with conductive N-doped carbon network. The V₂O₃@NC NANF was used as a free-standing anode without binder and conductive additives for lithium-ion batteries (LIBs). It exhibits a reversible capacity of 892 mA h g⁻¹ at 0.1 A g⁻¹ after cycling 400 times. After 1000 cycles, it shows a discharge capacity of 317 mA h g^-1 at 2 A g⁻¹. The superior electrochemical performance is attributed to the hierarchical structure and uniform N-doped carbon coated network, which can increase the conductivity and alleviate the volume expansion of the electrode. In addition, the influence of non-electrochemical active substances (binder and conductive additives) is removed, and the electrical contact between active material and nickel foam collector is enhanced, thus further improving the electrochemical performance.

通过简单的溶剂热反应和随后的煅烧过程，在泡沫镍上制备了新型分层结构的 V ₂ O ₃ @N掺杂碳纳米片阵列（V ₂ O ₃ @NC NANF）。多孔纳米片阵列由 V ₂ O ₃纳米颗粒构成，该纳米颗粒均匀地涂覆有导电的 N 掺杂碳网络。V ₂ O ₃ @NC NANF 用作锂离子电池 (LIB) 的独立阳极，不含粘合剂和导电添加剂。它在 0.1 A g ^{-1 下}表现出 892 mA hg ^-1的可逆容量骑行400次后。在 1000 次循环后，它在 2 A g ^{-1 下}显示出 317 mA hg ^-1的放电容量。优异的电化学性能归因于分层结构和均匀的 N 掺杂碳包覆网络，可以增加电导率并减轻电极的体积膨胀。此外，去除了非电化学活性物质（粘合剂和导电添加剂）的影响，增强了活性材料与泡沫镍集电体之间的电接触，从而进一步提高了电化学性能。