Tailoring Mn₃O₄ Haussmannite thin films via transition metal doping for potential supercapacitor applications: Experimental and first principal insights

Key Points

• Doping transition metals improves the electrochemical performance of Mn₃O₄ thin films, enhancing their suitability for supercapacitors.
• Enhanced specific capacitance was observed, with notable improvements in energy density compared to undoped films.
• Experimental and first principles approaches were utilized to tailor thin films, establishing a relationship between composition and performance.
• These findings indicate a promising avenue for developing high-performance energy storage devices using doped manganese oxides.