|
| Application of rice husk-based activated carbon-loaded MgO composite for symmetric supercapacitors |
|
| Abstract: Amorphous activated carbon (AC) material was obtained by carbonizing rice husk at low temperatures and activated by KOH at high temperatures. A series of MgO-loaded AC materials (MgO/AC) were prepared by in-situ loading of magnesium chloride. The surface morphology and elemental composition of MgO/AC materials were studied using X-ray diffraction (XRD), laser co-polymerization Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy-energy dispersive spectrometer (SEM-EDS), and nitrogen adsorptiondesorption test. The possible relationship between pore structure and electrochemical performance was analyzed in detail. The test results indicated that 2.0MgO/AC electrodes were assembled into a symmetric supercapacitor, and the gravimetric capacitance was 211.9 F·g-1 at 0.5 A·g-1. It had an energy density of 18.30 Wh·kg-1 at a power density of 0.41 kW·kg-1 and the retention rate was 86.8% after 5 000 cycles. |
| Keywords: MgO-loaded activated carbon composite electrode symmetric supercapacitor energy density |
| Hits: 56 |
| Download times: 13 |
| SUI Guanghui,CHENG Yanyan.Application of rice husk-based activated carbon-loaded MgO composite for symmetric supercapacitors[J].Chinese Journal of Inorganic Chemistry,2025,41(3):521-530. |
| View Full Text View/Add Comment Download reader |
|
|
|
|
|
|
|
|
