This study investigates the synthesis and application of boron nitride quantum dot (BNQD) covalently bonded reduced graphene oxide (rGO) hybrid materials as a novel electrode material for supercapacitors. Because of the p-doping as well as the enhanced hydrophilicity and interfacial bonding force enabled by the hybridization of amine-functionalized boron nitride quantum dot (A-BNQD) with rGO via the chemical coupling reaction, the A-BNQD/rGO shows improved charge carrier density, wettability of electrolyte, and durability. As a result of the synergistic effects, the A-BNQD/rGO as a supercapacitor electrode shows much higher specific capacitance compared to those of rGO and raw BNQD/rGO at a current density of 1 A g⁻¹. Further, the A-BNQD/rGO shows high cycling stability, maintaining almost 94.38%, even after 10,000 cycles due to the enhanced interfacial bonding force between the A-BNQD and rGO. Besides, the fabricated symmetric supercapacitor exhibits high specific capacitance (90 F g⁻¹@1 A g⁻¹), an energy density (12.5 Wh kg⁻¹@0.5 kW kg⁻¹), and good cycling stability. This result suggested that the fabricated A-BNQD/rGO has great potential as electrode materials for high-performance supercapacitors.

本研究研究了氮化硼量子点 (BNQD) 共价键合还原氧化石墨烯 (rGO) 杂化材料作为超级电容器新型电极材料的合成和应用。由于胺官能化氮化硼量子点 (A-BNQD) 与 rGO 通过化学偶联反应的杂化实现了 p 掺杂以及增强的亲水性和界面键合力，A-BNQD/rGO 显示出改善的电荷载流子密度、电解质的润湿性和耐久性。由于协同效应，在 1 A g ^-1的电流密度下，作为超级电容器电极的 A-BNQD/rGO 显示出比 rGO 和原始 BNQD/rGO 高得多的比电容. 此外，由于 A-BNQD 和 rGO 之间增强的界面结合力，A-BNQD/rGO 显示出高循环稳定性，即使在 10,000 次循环后仍保持近 94.38%。此外，制造的对称超级电容器具有高比电容（90 F g ^-1 @1 A g ^-1）、能量密度（12.5 Wh kg ^-1 @0.5 kW kg ^-1）和良好的循环稳定性。该结果表明制备的 A-BNQD/rGO 作为高性能超级电容器的电极材料具有巨大潜力。