Improving the electrochemical performance of metal oxide-based materials for energy storage devices often involves employing key strategies, including the deliberate modification of composition through composite formation and the application of structural engineering techniques. Herein, we have synthesized bismuth antimonate (BiSbO) and ternary structure is constructed by integrating Graphitic Nanofiber (GNF) and MXene (MX) via a facile hydrothermal method. The synergistic effect of the well-defined structure, coupled with the excellent electrical conductivity facilitated by the MXene and GNF networks, significantly contributes to the outstanding energy and power density. The unblocked ion and electron channels within its hierarchical structure enhances the material's performance as a battery-type cathode for supercapacitors. This work reports a notable specific capacitance of 819 F g at 1 A g and an impressive durability, with 94% capacity retention after 5000 charge/discharge cycles in a three-electrode system. Furthermore, an asymmetric supercapacitor device BSO–GF–MX‖AC is fabricated with activated carbon as negative electrode, which delivered superior energy density 46 Wh kg at power density 750 W kg and retains 90.6% of initial capacitance. This study provides a promising strategy for fabricating ternary composite-based electrodes, offering a pathway to assemble high-performance and cost-effective energy storage devices.

中文翻译：

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提高先进超级电容器中锑酸铋与 MXene 和石墨纳米纤维的储能性能

提高用于储能装置的金属氧化物基材料的电化学性能通常涉及采用关键策略，包括通过复合材料形成对成分进行有意的修改以及结构工程技术的应用。在此，我们合成了锑酸铋（BiSbO），并通过简便的水热方法整合石墨纳米纤维（GNF）和MXene（MX）构建了三元结构。明确结构的协同效应，加上 MXene 和 GNF 网络带来的优异导电性，显着有助于实现出色的能量和功率密度。其分层结构内畅通的离子和电子通道增强了该材料作为超级电容器电池型阴极的性能。这项工作报告在 1 A g 下具有 819 F g 的显着比电容和令人印象深刻的耐用性，在三电极系统中经过 5000 次充电/放电循环后容量保持率为 94%。此外，采用活性炭作为负极制造了不对称超级电容器装置BSO–GF–MX‖AC，其在功率密度750 W kg下提供了46 Wh kg的优异能量密度，并保留了90.6%的初始电容。这项研究为制造三元复合材料电极提供了一种有前途的策略，为组装高性能且具有成本效益的储能设备提供了途径。