Supercapacitors have emerged as appealing alternatives to rechargeable energy storage devices in renewable energy generation and storage systems due to their ultra-high power characteristics. However, their broad applications are hindered by their low energy density characteristic. Therefore, the designs of electrodes with high rate and high specific capacitance and electrolytes with wide-potential window are extremely crucial. A novel core-shell heterostructure, TiNb₂O₇ as the core and C-encapsulated MoS₂ as the shell, was demonstrated. As a result of synergistic effects induced by the core-shell heterostructure, this nanoarchitectural anode exhibited high rate capability and excellent cyclic stability, 99 % capacity was retented after 500 cycles. Moreover, a nanocomposite ionogel electrolyte composed of ionic liquid (IL), poly(vinylidene fluoride-co-hexafluoropropene)-hexafluoropropylene (PVDF-HFP) and SiO₂ was prepared. In our study, optimized solid lithium-ion capacitors (SLICs) exhibited an impressive energy density of 147.2 Wh kg^-1 at 60 °C and an outstanding ultra-long term stability, 93.7 % capacity was retented after 10000 cycles at 1 A g^-1. These outstanding performances could be ascribed to the widened potential window and remarkable ionic conductivity of the ionogel electrolyte. The effective combination of nanoarchitectural anodes and a nanocomposite ionogel provides a novel and profound direction for the fabrication of highly safe and reliable solid lithium-ion capacitors with enhanced high energy density.

超级电容器由于其超高功率特性，已成为可再生能源发电和存储系统中可充电储能设备的吸引人的替代品。但是，它们的低能量密度特性阻碍了它们的广泛应用。因此，具有高速率和高比电容的电极以及具有宽电位窗的电解质的设计至关重要。一种新颖的核-壳异质结构，以TiNb ₂ O ₇为核和C封装的MoS ₂作为外壳，进行了演示。由于核-壳异质结构引起的协同效应，这种纳米结构阳极表现出高倍率能力和出色的循环稳定性，在500次循环后保留了99％的容量。此外，制备了由离子液体（IL），聚（偏二氟乙烯-共六氟丙烯）-六氟丙烯（PVDF-HFP）和SiO ₂组成的纳米复合离子凝胶电解质。在我们的研究中，优化的固态锂离子电容器（SLIC）在60°C时表现出令人印象深刻的147.2 Wh kg ^-1的能量密度，并具有出色的超长期稳定性，在1 A g ^- 10000次循环后保留了93.7％的容量^{- 1个}。这些出色的性能可以归因于离子凝胶电解质的扩大的电势窗口和显着的离子电导率。纳米建筑阳极与纳米复合离子凝胶的有效结合为制造具有更高的高能量密度的高度安全可靠的固态锂离子电容器提供了新颖而深刻的方向。