biostudies-literatureHenriquez RPontificia Universidad Católica de ValparaísoUniversidad de la República UruguayComisión Sectorial de Investigación CientíficaFederación Española de Enfermedades Raras31557-31565https://www.ebi.ac.uk/biostudies/studies/S-EPMC9041682biostudies-literatureUnknown11(50)A CdCO₃/CdO/Co₃O₄ composite has been prepared on nickel foam through a combined hydrothermal-annealing method. An asymmetric hybrid supercapacitor (SC) device was assembled with this composite as the positive electrode and activated carbon was the negative electrode. The SC exhibited a high specific capacitance of 84 F g^-1 @ 1 mA cm^-2, a maximum energy density of 26.3 W h kg^-1, and a power density of 2290 W kg^-1, along with a wide potential window of 1.5 V and long cycle life (92% after 6000 cycles). SCs assembled in series powered various light-emitting diodes and moved an electrical mini-motor.RSC advancesHigh-performance asymmetric supercapacitor based on CdCO₃/CdO/Co₃O₄ composite supported on Ni foam.PMC9041682UMA18-FEDERJA-039039.377/2021Navarrete-Astorga EHenriquez RMestra-Acosta ASGrez PMunoz EDalchiele EAfalseHigh-performance asymmetric supercapacitor based on CdCO₃/CdO/Co₃O₄ composite supported on Ni foam.A CdCO₃/CdO/Co₃O₄ composite has been prepared on nickel foam through a combined hydrothermal-annealing method. An asymmetric hybrid supercapacitor (SC) device was assembled with this composite as the positive electrode and activated carbon was the negative electrode. The SC exhibited a high specific capacitance of 84 F g^-1 @ 1 mA cm^-2, a maximum energy density of 26.3 W h kg^-1, and a power density of 2290 W kg^-1, along with a wide potential window of 1.5 V and long cycle life (92% after 6000 cycles). SCs assembled in series powered various light-emitting diodes and moved an electrical mini-motor.2021-01-01T00:00:00Z2021 Sep2025-04-26T12:17:22.054Z2025-04-06T13:55:14.837ZS-EPMC90416823549688610.1039/d1ra05243h