• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Electrocatalytic oxygen reduction reaction activity of KOH etched carbon films as metal-free cathodic catalysts for fuel cells
【24h】

Electrocatalytic oxygen reduction reaction activity of KOH etched carbon films as metal-free cathodic catalysts for fuel cells

机译：Koh蚀刻碳膜的电催化氧还原活性作为燃料电池的无金属阴极催化剂

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this article, surface-modified graphite materials as cathodic catalysts are prepared by hot filament chemical vapor deposition and then chemically etched by KOH solution. Surface morphology, elemental composition, microstructure and surface chemical state of the modified graphite films are characterized by scanning electron microscopy, transmission electron microscopy, energy dispersive spectroscopy, Raman spectroscopy and X-ray photoelectron spectroscopy techniques. Results indicate that the surface of the pristine graphite can be refined to effectively improve the surface area by etching using the KOH solution with a moderate concentration. The graphite catalyst etched with 4.8 mg mL(-1) KOH solution shows a higher catalytic activity for the oxygen reduction reaction and a superior methanol tolerance than that of the un-etched and the other etched graphite catalysts. The stability of the etched graphite materials needs to be improved.
机译：在本文中，通过热丝化学气相沉积制备了作为阴极催化剂的表面改性石墨材料，然后通过KOH溶液化学蚀刻。 改性石墨膜的表面形态，元素组成，微观结构和表面化学状态，其特征在于扫描电子显微镜，透射电子显微镜，能量分散光谱，拉曼光谱和X射线光电子能谱技术。 结果表明，通过使用具有中等浓度的KOH溶液，可以通过蚀刻来精制原始石墨的表面以有效改善表面积。 用4.8mg mL（-1）KOH溶液蚀刻的石墨催化剂显示出氧还原反应的催化活性，比未蚀刻和其他蚀刻的石墨催化剂的氧脂耐受性更高。 需要改善蚀刻石墨材料的稳定性。

著录项

  • 来源
    《RSC Advances》 |2019年第5期|共9页
  • 作者

    Suo Ni; Wu Aimin; Huang Hao; Cao Guozhong; Zhang Guifeng;

  • 作者单位

    Dalian Univ Technol Energy Mat &

    Devices Lab Sch Mat Sci &

    Engn Dalian 116024 Peoples R China;

    Dalian Univ Technol Energy Mat &

    Devices Lab Sch Mat Sci &

    Engn Dalian 116024 Peoples R China;

    Dalian Univ Technol Energy Mat &

    Devices Lab Sch Mat Sci &

    Engn Dalian 116024 Peoples R China;

    Univ Washington Dept Mat Sci &

    Engn Seattle WA 98195 USA;

    Dalian Univ Technol Energy Mat &

    Devices Lab Sch Mat Sci &

    Engn Dalian 116024 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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