One dimensional manganese oxides with tunnel structures have attracted as an effective electrochemical energy storage material because of its efficient electrolyte/cation interfacial charge transports which enables improved pseudo capacitive performance. We have reported a simple one step hydrothermal technique to incorporate K⁺ ions to maintain the tunnel width of cryptomelane α-MnO₂ nanowires during cycling performance. The effects of K⁺ ions on the electrochemical performance is studied by tuning the phases of α-KMnO₂ nanowires to Mn₃O₄ through an intermediate phase of Mn₂O₃ by subsequent calcinations at various temperatures. K⁺ ions doped α-MnO₂ nanowires exhibit a highest specific capacitance of 402 Fg^-1 at a current density of 1 Ag^-1 in 1 M Na₂SO₄ electrolyte solution compared to Mn₂O₃ and Mn₃O₄. The as synthesized α-KMnO₂ nanowires have a wider tunnel widths and enriched OH radical species and hence the electrolyte cations (Na⁺) penetrate the tunnels very easily resulting the polarization enhanced intercalation pseudo capacitance. The symmetric α-KMnO₂ nanowire supercapacitor device shows very high energy density (15.83 Wh kg⁻¹), power density (128.35 W kg⁻¹) and excellent cyclic stability with 88% retention of the initial capacitance after 3000 cycles.

具有隧道结构的一维氧化锰由于其有效的电解质/阳离子界面电荷传输而吸引了作为有效的电化学能量存储材料，这能够改善伪电容性能。我们已经报道了简单的一个步骤的水热技术掺入ķ ⁺离子，以维持钾锰矿α-MnO的隧道宽度_2层的循环性能期间的纳米线。K的影响⁺的电化学性能离子通过调谐α-高锰酸钾的相位研究_2个纳米线与Mn ₃ ö ₄通过Mn的中间阶段₂ ö ₃通过在不同温度下煅烧之后。ķ⁺离子掺杂α-MnO的_2个纳米线表现出402 FG的最高比电容^-1 1的Ag的电流密度^-1在1M的Na ₂ SO ₄相比锰电解质溶液₂ ö ₃和Mn ₃ Ò ₄。所述作为合成α-的KMnO ₂纳米线具有较宽的隧道宽度和富集ö H基物种，因此电解质阳离子（Na ⁺）穿透隧道非常容易产生的极化增强嵌入伪电容。对称α-的KMnO ₂纳米线超级电容器装置显示出非常高的能量密度（15.83 Wh kg ^-1），功率密度（128.35 W kg ^-1）和出色的循环稳定性，在3000次循环后保留了88％的初始电容。