In the published paper [1], there was an error in Figures 2 and 5c. The new schematic diagram (Figure 1), which is based on the new Figure 2, also requires correction. No changes were made to the conclusion or findings of the paper. The corrected Figure 1, Figure 2 and Figure 5 are shown below. This correction was approved by the Academic Editor. The original publication has also been updated.
Figure 1.
Schematic diagram of the cobalt-doped@MnO2 nanosheet composite.
Figure 2.
(a) SEM images of the MnO2 sample; (b) an SEM image of the cobalt-doped@MnO2 nanosheets composite; (c) a TEM image of the cobalt-doped@MnO2 nanosheets composite; and (d) an HRTEM image revealing the crystalline structure of the MnO2 nanosheets.
Figure 5.
(a) Specific capacitances of binary MnO2 nanoparticles and cobalt-doped@MnO2 nanosheets composite electrodes; (b) charge–discharge cycling stability of binary MnO2 nanoparticles and cobalt-doped@MnO2 nanosheets composite electrodes at 2 A g−1; (c) an SEM image of the cobalt-doped@MnO2 nanosheets composite after 3000 long cycles; and (d) a Nyquist plot of after 3000 GCD cycles of binary MnO2 nanoparticles and cobalt-doped@MnO2 nanosheets composite electrodes.
Reference
- Moniruzzaman, M.; Anil Kumar, Y.; Pallavolu, M.R.; Arbi, H.M.; Alzahmi, S.; Obaidat, I.M. Two-Dimensional Core-Shell Structure of Cobalt-Doped@MnO2 Nanosheets Grown on Nickel Foam as a Binder-Free Battery-Type Electrode for Supercapacitor Application. Nanomaterials 2022, 12, 3187. [Google Scholar] [CrossRef] [Scilit] [PubMed]
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