TY - JOUR
T1 - Preparation and characterization of carbon quantum dots grafted Co3O4 nanocomposite for supercapacitors application
AU - Prabakaran, Periyasami
AU - Arumugam, Gowdhaman
AU - Ramu, Perumal
AU - Selvaraj, Manickam
AU - Assiri, Mohammed A.
AU - Rokhum, Samuel Lalthazuala
AU - Periyasamy, Sivakumar
AU - Arjunan, Silambarasan
AU - Rajendran, Ramesh
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/8
Y1 - 2023/8
N2 - A pure Co3O4 nanoparticles and a carbon quantum dots (CQDs) anchored cobalt oxide (Co3O4/CQD) nanocomposite were synthesized by a simple hydrothermal method for supercapacitor application. The powder XRD measurement confirms the formation cubic phase of Co3O4. More HR-TEM measurements. The beneficial surface and electronic properties of CQDs were used for the refinement of the electrochemical accomplishments of Co3O4. The Co3O4/CQD and Co3O4 manifest half-cell specific capacitances of 193.8 F g−1 and 123.6 F g−1 @ current density of 4 A g−1, respectively. The introduction of CQDs into the Co3O4 matrix increased the charge-transfer process, which is primarily responsible for the improved electrochemical capabilities of the nanocomposite. The hybrid asymmetric supercapacitor delivers an energy density of 2.49 W h kg−1 @ a power density of 426 W kg−2 with a capacitance retention of 81.8%.
AB - A pure Co3O4 nanoparticles and a carbon quantum dots (CQDs) anchored cobalt oxide (Co3O4/CQD) nanocomposite were synthesized by a simple hydrothermal method for supercapacitor application. The powder XRD measurement confirms the formation cubic phase of Co3O4. More HR-TEM measurements. The beneficial surface and electronic properties of CQDs were used for the refinement of the electrochemical accomplishments of Co3O4. The Co3O4/CQD and Co3O4 manifest half-cell specific capacitances of 193.8 F g−1 and 123.6 F g−1 @ current density of 4 A g−1, respectively. The introduction of CQDs into the Co3O4 matrix increased the charge-transfer process, which is primarily responsible for the improved electrochemical capabilities of the nanocomposite. The hybrid asymmetric supercapacitor delivers an energy density of 2.49 W h kg−1 @ a power density of 426 W kg−2 with a capacitance retention of 81.8%.
KW - Electrode materials
KW - Metal oxide
KW - Nanomaterails
KW - Supercapacitor
UR - http://www.scopus.com/inward/record.url?scp=85164324415&partnerID=8YFLogxK
U2 - 10.1016/j.surfin.2023.103153
DO - 10.1016/j.surfin.2023.103153
M3 - Article
AN - SCOPUS:85164324415
SN - 2468-0230
VL - 40
JO - Surfaces and Interfaces
JF - Surfaces and Interfaces
M1 - 103153
ER -