• 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蚀刻碳膜作为燃料电池无金属阴极催化剂的电催化氧还原反应活性

获取原文
           
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表面改性的石墨材料作为阴极催化剂，然后通过KOH溶液进行化学蚀刻。改性石墨膜的表面形貌，元素组成，微观结构和表面化学状态通过扫描电子显微镜，透射电子显微镜，能量色散光谱，拉曼光谱和X射线光电子能谱技术表征。结果表明，通过使用中等浓度的KOH溶液进行蚀刻，可以精制原始石墨的表面以有效地改善表面积。与未蚀刻和其他蚀刻的石墨催化剂相比，用4.8 mg mL〜（？1）KOH溶液蚀刻的石墨催化剂显示出更高的氧还原反应催化活性和优异的甲醇耐受性。蚀刻后的石墨材料的稳定性需要提高。

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