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首页> 外文期刊>Energy Conversion & Management >Poly(ethylene oxide)-poly(propylene oxide)-poly(ethyl oxide) enhancing capacitance behavior of composite electrode material poly(o-phenylenediamine)/manganese dioxide for supercapacitor
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Poly(ethylene oxide)-poly(propylene oxide)-poly(ethyl oxide) enhancing capacitance behavior of composite electrode material poly(o-phenylenediamine)/manganese dioxide for supercapacitor

机译：聚（环氧乙烷）-聚（环氧丙烷）-聚（环氧乙烷）增强了超级电容器复合电极材料聚（邻苯二胺）/二氧化锰的电容性能

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摘要

Composite material poly(o-phenylenediamine)/manganese dioxide (PoPD/MnO_2) used as supercapacitor electrode was one-step synthesized by liquid phase co-precipitation. To obtain good electrochemical performance, such as capacitance performance, rate capability and cycle stability, non-ionic surfactant P123 (poly(ethylene oxide)-poly(propylene oxide)-poly(ethyl oxide), PEO-PPO-PEO) is employed to regulate the morphology, structure and dispersity of PoPD/MnO_2. As evidenced by infrared spectroscopy and X-ray diffraction, PoPD/MnO_2 are all amorphous structure with weak crystallinity. It is worth noting that P123 imposes great influence on morphology, specific surface area and capacitance behavior of PoPD/MnO_2. As P123 increases, PoPD/MnO_2 initially presents as large irregular blocky aggregates, gradually evolves into near-spherical nanoparticles (50-80) nm, and eventually changes to the coexistence state of both. Sample PoPD/MnO_2-0.8 obtained under the optimum P123 dosage 0.8 g (0.0035 mol L~1) has the largest Brunauer-Emmett-Teller specific surface area (123.2 m~2 g~(-1)) and specific capacitance (292.4 F g~(-1)) at 500 mA g~(-1), much higher than that of PoPD/MnO_2-0 without P123 (47.2 m~2 g~(-1) and 62.1 F g~(-1)). Meanwhile, the rate capability and the cycle stability of PoPD/MnO_2-0.8 improve significantly as well. The equivalent series resistance, electrons transfer resistance and diffusion impedance of samples prepared with suitable amount of P123 all reduced to some extent.
机译：通过液相共沉淀法一步合成了用作超级电容器电极的复合材料聚（邻苯二胺）/二氧化锰（PoPD / MnO_2）。为了获得良好的电化学性能，例如电容性能，倍率性能和循环稳定性，非离子表面活性剂P123（聚环氧乙烷-聚环氧丙烷-聚环氧乙烷，PEO-PPO-PEO）用于调节PoPD / MnO_2的形态，结构和分散性。红外光谱和X射线衍射证明，PoPD / MnO_2均为无定形结构，结晶度较弱。值得注意的是，P123对PoPD / MnO_2的形貌，比表面积和电容行为影响很大。随着P123的增加，PoPD / MnO_2最初以大的不规则块状聚集体形式出现，逐渐演变为近球形的纳米粒子（50-80）nm，最终变为两者的共存状态。在最佳P123剂量0.8 g（0.0035 mol L〜1）下获得的样品PoPD / MnO_2-0.8具有最大的Brunauer-Emmett-Teller比表面积（123.2 m〜2 g〜（-1））和比电容（292.4 F在500 mA g〜（-1）时达到g〜（-1）），远高于没有P123的PoPD / MnO_2-0（47.2 m〜2 g〜（-1）和62.1 F g〜（-1）） 。同时，PoPD / MnO_2-0.8的速率能力和循环稳定性也显着提高。用适量P123制备的样品的等效串联电阻，电子转移电阻和扩散阻抗都在一定程度上降低了。

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  • 来源
    《Energy Conversion & Management》 |2015年第2期|120-131|共12页
  • 作者

    Huaihao Zhang; Jiangna Gu; Jie Tong; Chi Ma; Jing Zhao; Xiaoxing Zhang; Chengyin Wang;

  • 作者单位

    College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China;

    College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China;

    College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China;

    College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China;

    College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China;

    College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China;

    College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Poly(o-phenylenediamine)/manganese dioxide; Supercapacitor; Poly(ethylene oxide)-poly(propylene oxide)-poly(ethyl oxide); Specific capacitance;

    机译：聚（邻苯二胺）/二氧化锰;超级电容器聚（环氧乙烷）-聚（环氧丙烷）-聚（环氧乙烷）;比电容;

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