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Engineering LaNiO3/rGO-based hybrid nanocomposite via hydrothermal route for high-performance supercapacitor
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DOI：10.1016/j.diamond.2026.113975.png)
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Abstract
En 中文
The overuse of fossil fuels, which contributes to energy depletion and environmental damage, has grown to be a significant worldwide problem. Supercapacitors and other innovative energy-storage technologies are in abundance due to these energy issues. In this work, a hydrothermal synthesis approach was successfully used to create a perovskite interactive hierarchical LaNiO3 (bare) and their rGO nanocomposite (NC). XRD, SEM with EDX, and FTIR instruments were used to analyze for synthesized lanthanum-based rGO (NCs) structurally, morphologically, and spectroscopical properties. The perovskite-structured LaNiO3/rGO NCs demonstrated an incredible specific capacitance (Csp) of 1338.11 F/g at a scan rate of 5 mV/s, according to cyclic voltammetry measurement. Based on GCD plots, the produced composite showed an expected Csp of 1117.15 F/g at 1 A/g, which displayed stability after 8000 cycles with a capacitive retention of 81.5%. Moreover, rGO and LaNiO3/rGO were used as the electrode materials in the assembly of an asymmetric supercapacitor (ASC) device. Along with outstanding cycling durability it retained 79.83% of its capacitance after 5000 cycles at 10 A/g, the device produced an amazing energy density (ED) 79.95 Wh/Kg and a power density (PD) of 1133.24 W/kg. The LaNiO3/rGO NC showed exceptional electrochemical performance and stability, suggesting that it has great potential for application in high-performance energy storage devices.
Keywords:
Perovskite
Hydrothermal
Supercapacitor
Cyclic stability
Energy storage
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