The reported electrochemical performance, particularly the 96% capacitance retention, seems unusually high and lacks independent verification or statistical validation. The crystallographic analysis is inconsistent, with insufficient details on Rietveld refinement parameters, and the claimed synergy between α-MnO2 and K1.39Mn3O6 is not convincingly demonstrated through proper control experiments. The study also lacks in-depth surface chemistry analysis (e.g., XPS or Raman spectroscopy) to confirm interactions between MnO2 and the carbon xerogel, leaving uncertainties about the actual mechanism. I encourage the authors to address these issues to strengthen the study’s rigor and improve the clarity and reliability of its findings.
