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Binary composites of strontium oxide/polyaniline for high performance supercapattery devices
Solid State Ionics ( IF 3.2 ) Pub Date : 2020-03-02 , DOI: 10.1016/j.ssi.2020.115276
Muhammad Zahir Iqbal , Shahid Alam , Amir Muhammad Afzal , Muhammad Javaid Iqbal , Khurram Yaqoob , Muhammad Arshad Kamran , Muhammad Ramzan Abdul Karim , Thamer Alherbi

The study divulges the innovative route to the synthesis of strontium oxide (SrO) nanorods integrated with polyaniline (SrO-PANI) by using physical blending method and utilized for high performance asymmetric supercapacitor. The synthesized nanocomposites (NCs) are initially characterized by using scanning electron microscopy (SEM) and X-ray diffraction (XRD). The electrochemical performance of the NCs is evaluated for energy storage applications. The results demonstrated that the SrO-PANI NCs yield a maximum specific capacity (Qs) of 258 C g−1 at current density of 0.8 A g−1 in three electrode assembly and exhibit better electrochemical stability as compared to PANI and SrO nanorods. Supercapattery device is fabricated by using SrO-PANI NCs. Results reveal that supercapattery device gives an improved energy density of 24 Wh kg−1 and the maximum power density is 2240 W kg−1. Furthermore, the fabricated supercapattery device demonstrated an excellent cyclic stability withholding the capacity of 114% after continues 3000 GCD cycles. The capacitive and diffusive contribution in total capacity of the device is further investigated by using Dunn's model. The advancement of these cost effective NCs are fairly suitable for proficient energy storage devices.



中文翻译:

高性能超级电池器件用氧化锶/聚苯胺的二元复合材料

该研究通过物理掺混方法揭示了合成聚苯胺(SrO-PANI)的氧化锶(SrO)纳米棒的创新途径,并用于高性能不对称超级电容器。首先使用扫描电子显微镜(SEM)和X射线衍射(XRD)对合成的纳米复合材料(NCs)进行表征。NCs的电化学性能已针对储能应用进行了评估。结果表明,所述的SrO-PANI NC的产生最大比容量(Q小号258 C g还)-1在0.8 A克电流密度-1与PANI和SrO纳米棒相比,三电极组件具有更好的电化学稳定性。超级电池设备是使用SrO-PANI NC制造的。结果表明,超级电池装置提供了改进的24 Wh kg -1的能量密度,最大功率密度为2240 W kg -1。此外,所制造的超级电池装置表现出优异的循环稳定性,在连续3000次GCD循环后仍保持114%的容量。通过使用邓恩模型进一步研究了器件总容量中的电容性和扩散性贡献。这些具有成本效益的NC的进步非常适合精通能量的存储设备。

更新日期:2020-03-02
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