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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Synthesis of layered birnessite-type manganese oxide thin films on plastic substrates by chemical bath deposition for flexible transparent supercapacitors
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Synthesis of layered birnessite-type manganese oxide thin films on plastic substrates by chemical bath deposition for flexible transparent supercapacitors

机译：通过化学浴沉积在柔性透明超级电容器上在塑料基板上合成层水钠锰矿型氧化锰薄膜

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摘要

Layered birnessite-type manganese oxide thin films are successfully fabricated on indium tin oxide coated polyethylene terephthalate substrates for flexible transparent supercapacitors by a facile, effective and inexpensive chemical bath deposition technology from an alkaline KMnO_4 aqueous solution at room temperature. The effects of deposition conditions, including KMnO_4 concentration, initial molar ratio of NH_3-H_2O and KMnO_4, bath temperature, and reaetion time, on the electrochemical properties of MnO_2 thin films are investigated. Layered birnessite-type MnO_2 thin films deposited under optimum conditions display three-dimensional porous morphology, high hydrophilicity, and a transmittance of 77.4% at 550 nm. A special capacitance of 229.2 Fg~(-1) and a capacitance retention ratio of 83% are obtained from the films after 1000 cycles at 10 mVs~(-1) in 1 M Na_2SO_4. Compressive and tensile bending tests show that as-prepared MnO_2 thin film electrodes possess excellent mechanical flexibility and electrochemical stability.
机译：通过简便，有效和廉价的化学浴沉积技术，在室温下从碱性KMnO_4水溶液中，成功地在用于柔性透明超级电容器的氧化铟锡涂层的聚对苯二甲酸乙二醇酯基板上成功制备了层状水钠锰矿型氧化锰薄膜。研究了沉积条件，包括KMnO_4的浓度，NH_3-H_2O和KMnO_4的初始摩尔比，熔池温度和再反应时间对MnO_2薄膜电化学性能的影响。在最佳条件下沉积的层水钠锰矿型MnO_2薄膜表现出三维多孔形态，高亲水性和在550nm下的透射率为77.4％。在1 M Na_2SO_4中，在10 mVs〜（-1）下经过1000次循环后，从薄膜中获得229.2 Fg〜（-1）的特殊电容和83％的电容保持率。压缩和拉伸弯曲试验表明，所制备的MnO_2薄膜电极具有优异的机械柔韧性和电化学稳定性。

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