• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Electrochemical Science >Comparative Supercapacitive Properties of Asymmetry Two Electrode Coin Type Supercapacitor Cells made from MWCNTS/Cobalt Oxide and MWCNTs/Iron Oxide Nanocomposite
【24h】

Comparative Supercapacitive Properties of Asymmetry Two Electrode Coin Type Supercapacitor Cells made from MWCNTS/Cobalt Oxide and MWCNTs/Iron Oxide Nanocomposite

机译：由MWCNTS /氧化钴和MWCNTs /氧化铁纳米复合材料制成的不对称两电极硬币型超级电容器的比较超级电容性能

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Supercapacitive properties of synthesized metal oxide nanoparticles (MO) vis a vis iron oxides (Fe2O3)and cobalt oxide (Co3O4) nanoparticles integrated with multi-walled carbon nanotubes (MWCNT) in atwo-electrode coin cell type asymmetry supercapacitor assembly was investigated. The synthesisedMO and nanocomposite films were characterised using techniques such as transmission electronmicroscopy (TEM), scan electron microscopy (SEM), electron dispersive X-ray spectroscopy (EDX)and X-ray diffraction spectroscopy (XRD). The supercapacitance of the asymmetry MWCNT-MObased supercapacitor in 1 M H2SO4 and 1 M Na2SO4 electrolytes was measured using cyclicvoltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic constant currentcharge-discharge (CD) techniques. The asymmetry supercapacitors MWCNT-Fe2O3|MWCNT and-2 MWCNT-Co3O4|MWCNT gave the highest specific capacitance (SC) values of 439.94 mFcm (or-1 -2 64.74 Fg ) and 425.83 mFcm (or 45.79 Fg ) respectively in 1 M H2SO4 using charge-dischargetechnique. Results obtained from charge-discharge experiment are much higher compared with thoseobtained using the CV technique since it is the most reliable and accurate method. The valuescompared favorably and higher compared to those reported in literature using similar technique.-1 MWCNT-Fe2O3|MWCNT cell gave specific power (SP) and specific energy (SE) of 19.31 Wkg andInt. J. Electrochem. Sci., Vol. 10, 2015 3415-1 2.68 WhKg respectively in 1 M H2SO4, while the energy deliverable efficiency (%) of the cell is99.6 and 91.3% in 1 M H2SO4 and 1 M Na2SO4 respectively.
机译：研究了合成的金属氧化物纳米颗粒（MO）与多壁碳纳米管（MWCNT）集成的氧化铁（Fe2O3）和氧化钴（Co3O4）纳米颗粒在双电极纽扣电池型不对称超级电容器组件中的超电容性能。利用透射电子显微镜（TEM），扫描电子显微镜（SEM），电子色散X射线能谱（EDX）和X射线衍射能谱（XRD）等技术对合成的MO和纳米复合薄膜进行了表征。使用循环伏安法（CV），电化学阻抗谱（EIS）和恒电流恒流充放电（CD）技术测量了不对称MWCNT-MO基超级电容器在1 M H2SO4和1 M Na2SO4电解质中的超级电容。在1 M H2SO4中，不对称超级电容器MWCNT-Fe2O3 | MWCNT和-2 MWCNT-Co3O4 | MWCNT的最高比电容（SC）值分别为439.94 mFcm（或-1 -2 64.74 Fg）和425.83 mFcm（或45.79 Fg）。使用充放电技术。与使用CV技术获得的结果相比，从充放电实验获得的结果要高得多，因为它是最可靠，最准确的方法。与使用类似技术的文献报道的值相比，该值令人满意且更高。-1MWCNT-Fe2O3 | MWCNT电池的比功率（SP）和比能（SE）为19.31 Wkg和Int。 J.电化学。科学，卷2015年10月3415-1在1 M H2SO4中分别为2.68 WhKg，而在1 M H2SO4和1 M Na2SO4中电池的能量传递效率（％）分别为99.6％和91.3％。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号