Herein, Li, Ni-codoped Zn₃V₃O₈/V₂O₃@bamboo-like carbon nanotube (BCNT) is synthesized as an anode for a Li-ion capacitor (LIC), which exhibits a high capacity and excellent cycling stability. The capacity retention is 91.0% after 2000 cycles at 5 A g⁻¹. Meanwhile, the formation mechanism of the hierarchical morphology of LNZVO@C is investigated. It is expected that the formation of Zn₃V₃O₈/V₂O₃ nanoplates is based on their matched d spacings, d₍₃₁₁₎(Zn₃V₃O₈) ≈ d₍₁₁₀₎(V₂O₃). The lateral and radial (thickness) directions of the nanoplate are along Zn₃V₃O₈ (311) and (111) facets, respectively. Density functional theory (DFT) calculations reveal that the Zn₂VO₄ (311/111) heterointerface is thermodynamically favorable, and its good stability is associated with the charge transfer from the V atoms on the (111) surface to the V atoms on the (311) surface. Although the existence of ZnV₂O₄ phase is not beneficial for the formation of ZnV₂O₄ (311)/(111) interface, it favors the improvement of electron conductivity. Meanwhile, a KOH-activated BCNT is designed as the cathode for LIC, which shows a relatively high capacity. The LNZVO@C//FBCNT LIC with carbon nanotube–derived cathode and anode can provide high energy densities.

中文翻译：

---

在竹状碳纳米管上生长的匹配小面诱导微花状锂、镍共掺杂 Zn3V3O8/V2O3 纳米板组件，用于高能量密度锂离子电容器

在此，Li、Ni共掺杂的Zn ₃ V ₃ O ₈ /V ₂ O ₃ @竹状碳纳米管（BCNT）被合成为锂离子电容器（LIC）的阳极，具有高容量和优异的循环稳定。在 5 A g ^{-1 下}循环 2000 次后容量保持率为 91.0% 。同时，研究了LNZVO@C分层形态的形成机制。预计 Zn ₃ V ₃ O ₈ /V ₂ O ₃纳米片的形成是基于它们匹配的d间距，d ₍₃₁₁₎ (Zn ₃ V₃ O ₈ ) ≈  d ₍₁₁₀₎ (V ₂ O ₃ )。纳米板的横向和径向（厚度）方向分别沿着 Zn ₃ V ₃ O ₈ (311) 和 (111) 面。密度泛函理论 (DFT) 计算表明，Zn ₂ VO ₄ (311/111) 异质界面在热力学上是有利的，其良好的稳定性与电荷从 (111) 表面上的 V 原子转移到表面上的 V 原子有关。 (311) 表面。虽然ZnV ₂ O ₄相的存在不利于ZnV ₂ O ₄的形成(311)/(111)界面，有利于提高电子电导率。同时，KOH 活化的 BCNT 被设计为 LIC 的阴极，显示出相对较高的容量。具有碳纳米管衍生的阴极和阳极的 LNZVO@C//FBCNT LIC 可以提供高能量密度。