首页> 美国卫生研究院文献>Nanomaterials >A Novel Radiation Method for Preparing MnO2/BC Monolith Hybrids with Outstanding Supercapacitance Performance
【2h】

A Novel Radiation Method for Preparing MnO2/BC Monolith Hybrids with Outstanding Supercapacitance Performance

机译:一种制备具有超强电容性能的MnO2 / BC整料杂化物的新型辐射方法

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

A novel facile process for fabrication of amorphous MnO2/bamboo charcoal monolith hybrids (MnO2/BC) for potential supercapacitor applications using γ-irradiation methods is described. The structural, morphological and electrochemical properties of the MnO2/BC hybrids have been investigated using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), cyclic voltammetry (CV), galvanostatic charge/discharge (GCD) and electrochemical impedance spectroscopy (EIS) techniques. The combination of BC (electrical double layer charge) and MnO2 (pseudocapacitance) created a complementary effect, which enhanced the specific capacitance and good cyclic stability of the MnO2/BC hybrid electrodes. The MnO2/BC hybrids showed a higher specific capacitance (449 F g−1 at the constant current density of 0.5 A g−1 over the potential range from –0.2 V to 0.8 V), compared with BC (101 F g−1) in 1 M of Na2SO4 aqueous electrolyte. Furthermore, the MnO2/BC hybrid electrodes showed superior cycling stability with 78% capacitance retention, even after 10,000 cycles. The experimental results demonstrated that the high performance of MnO2/BC hybrids could be a potential electrode material for supercapacitors.
机译:描述了一种新型的简便工艺,该工艺可使用γ辐照方法制造潜在的超级电容器用途的无定形MnO2 /竹炭整体式混合材料(MnO2 / BC)。已使用X射线衍射(XRD),场发射扫描电子显微镜(FESEM),透射电子显微镜(TEM),循环伏安法(CV),恒电流电荷/来研究MnO2 / BC杂化物的结构,形态和电化学性质放电(GCD)和电化学阻抗谱(EIS)技术。 BC(双电层电荷)和MnO2(伪电容)的组合产生了互补效应,从而增强了MnO2 / BC混合电极的比电容和良好的循环稳定性。 MnO2 / BC杂化物在–0.2 V到200 V的电位范围内,在0.5 A g -1 的恒定电流密度下显示出更高的比电容(449 F g -1 )在1 M的Na2SO4水溶液中,与BC(101 F g -1 )相比,电压为0.8V。此外,即使在10,000次循环后,MnO2 / BC混合电极仍具有出色的循环稳定性和78%的电容保持率。实验结果表明,MnO2 / BC杂化物的高性能可能是超级电容器的潜在电极材料。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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