Manganese dioxide (MD) was synthesized by cyclic voltammetry using 0.5 mol L⁻¹ MnSO₄·6H₂O as the precursor solution, with and without the 0.05 mol L⁻¹ of Na₂SO₄ support electrolyte solution, and effect was studied by several techniques. The AFM analysis allowed the study of the substrate and synthesized films topography; SEM images showed the differences in the morphology and thickness of the films. Through XRD analysis, it was possible to observe the crystallinity of the materials, caused by the influence of Na₂SO₄ during electrodeposition and electrochemical characterization, which made it possible to obtain results that served as parameters during the studies proposed here. The voltammograms showed the differences in theoretical capacitance of 0.5 mol L⁻¹ manganese dioxide with Na₂SO₄ (MDNa) and for 0.5 mol L⁻¹ manganese dioxide without the 0.05 mol L⁻¹ of Na₂SO₄, which were 860.25 and 455 F g⁻¹, respectively, while in the GCD tests, they present 375 and 250 F g⁻¹ of specific capacitance for the 0.5 mol L⁻¹ MDNa and 0.5 mol L⁻¹ MD electrodes; all results measured in 0.5 A g⁻¹. The EIS studies by the Nyquist and Bode plots made it possible to analyze the resistivity regions and the capacitive nature of the materials. It can be concluded that the purpose of this study was successfully achieved, since the results are interrelated and confirm that the MDNa electrode has attractive and more advantageous properties than MD for supercapacitor application.

以0.5 mol L ^-1 MnSO ₄ ·6H ₂ O为前体溶液，在有和无0.05 mol L ^-1的Na ₂ SO ₄载体电解质溶液下，通过循环伏安法合成二氧化锰（MD）。几种技术。原子力显微镜分析允许研究基材和合成膜的形貌；SEM图像显示了膜的形态和厚度的差异。通过XRD分析，可以观察到由于Na ₂ SO ₄的影响而引起的材料的结晶度。在电沉积和电化学表征过程中，这有可能获得作为本文提出的研究过程中的参数使用的结果。的伏安图显示在0.5摩尔升●理论电容的差异^-1二氧化锰用Na ₂ SO ₄（有MDNa）和0.5摩尔大号^-1而不0.05摩尔l锰二氧化^-1的Na ₂ SO ₄，这是860.25和455 F G ^-1，分别，而在GCD测试，它们呈现375和250 F G ^-1特定的电容为0.5摩尔大号^-1有MDNa和0.5摩尔大号^-1MD电极; 所有结果均以0.5 A g ^-1测得。通过Nyquist和Bode图进行的EIS研究使分析材料的电阻率区域和电容性质成为可能。可以得出结论，该研究的目的是成功实现的，因为结果是相互关联的，并证实了MDNa电极具有比MD超级电容器应用更具吸引力和更优越的性能。