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首页> 外文期刊>Journal of Applied Polymer Science >Improved electrochemical performances of polyaniline by graphitized mesoporus carbon: Hybrid electrode for supercapacitor
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Improved electrochemical performances of polyaniline by graphitized mesoporus carbon: Hybrid electrode for supercapacitor

机译：石墨化介孔碳改善聚苯胺的电化学性能：超级电容器的混合电极

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摘要

In this work, graphitized mesoporus carbon (GMC) was used to increase the specific capacitance and cycle stability of polyaniline (PANI). Hybrid material of polyaniline-graphitized mesoporus carbon (GMCP) was prepared by in situ chemical polymerization of aniline in presence of sulphuric acid using ammonium persulfate oxidant with various amounts of GMC. Formation of hybrid sample was confirmed from X-ray diffraction, and the composite sample was stable up to 250 degrees C. Morphology, crystalline nature, and electrochemical performance of GMCP were compared with that of its individual components, GMC and PANI. GMC showed particle morphology and PANI showed nanofiber morphology. GMCP2 composite showed nanofibrous form of PANI grown on GMC (spherical form) along with PANI nanofibers. Higher crystallinity was obtained for GMCP than that of PANI. Cycling stability of GMCP2 was carried up to 12,000 cycles at 1200 W kg(-1) and the retention capacitance was 66% of its original capacitance of 243 F g(-1). With the same power density, GMC showed less capacitance value of 53 F g(-1) with 92% retention and PANI showed capacitance of 187 F g(-1) and it underwent 1500 cycles only. Higher supercapacitor performance was obtained for GMCP composite compared to that of its components, PANI and GMC. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42540.
机译：在这项工作中，使用石墨化的介孔碳（GMC）来提高聚苯胺（PANI）的比电容和循环稳定性。聚苯胺石墨化介孔碳（GMCP）的杂化材料是通过在硫酸存在下使用过硫酸铵氧化剂和各种量的GMC进行苯胺的原位化学聚合制备的。通过X射线衍射确认了混合样品的形成，并且该复合样品在高达250℃下是稳定的。将GMCP的形态，结晶性质和电化学性能与其单个组分GMC和PANI进行了比较。 GMC显示出颗粒形态，而PANI显示出纳米纤维形态。 GMCP2复合材料显示了PANI的纳米纤维形式（与球形PANI一起在GMC上生长）。 GMCP获得的结晶度高于PANI。 GMCP2的循环稳定性在1200 W kg（-1）时可进行12,000个循环，保留电容为其原始电容243 F g（-1）的66％。在相同的功率密度下，GMC的电容值较小，为53 F g（-1），保留率为92％，PANI的电容值为187 F g（-1），仅经过1500次循环。相比于其组件PANI和GMC，GMCP复合材料获得了更高的超级电容器性能。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42540。

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