| Autor: |
Ravi, Vinoth Kumar, Palanisamy, Vickraman, Thomai, Arul Raja, Ramya Bharathi, M. S. |
| Zdroj: |
Journal of Materials Science: Materials in Electronics; Nov2023, Vol. 34 Issue 33, p1-16, 16p |
| Abstrakt: |
Copper ammonium phosphate (CAP) at four mass variates of carbon nanofiber (CNF) [CAP@CNFx, x = 1(20mg), 2(40mg), 3(60mg), and 4(80mg)] synthesized by facile microwave technique are subjected to electrochemical studies in 2 M H2SO4. It is noted that the CAP@CNF2 exhibits pseudocapacitive behavior and delivered higher specific capacitance (Csp) of 478 F g−1 @ 1 A g−1 than all other CAP@CNFx composites. The SEM morphology reveals the strong rigid lattice coordination between CAP and 40 mg CNF. The Raman G band reveals graphitization and higher amorphousity for CAP@CNF2. The fabricated CAP@CNF2//rGO hybrid supercapacitor device (HSD) in 3 M H2SO4 delivers Csp 428 F g−1 @ 1 A g−1. The Nyquist plot shows lower Resr in the high-frequency region suggestive of higher conductivity. The energy and power densities of the HSD are found to be 192 Wh kg−1 and 898 W kg−1, respectively, @ 1 A g−1 with 82% capacity retention for 10,000 charge–discharge cycles @ 20 A g−1, which is promising for hybrid supercapacitor applications. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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