• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced energy materials >Bifunctional Oxygen Electrocatalysis through Chemical Bonding of Transition Metal Chalcogenides on Conductive Carbons
【24h】

Bifunctional Oxygen Electrocatalysis through Chemical Bonding of Transition Metal Chalcogenides on Conductive Carbons

机译：通过过渡金属硫属元素化物与导电碳的化学键合作用进行双功能氧电催化

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

Improving the electrochemical performance of both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) has been of great interest in emerging renewable energy technologies. This study reports an advanced bifunctional hybrid electrocatalyst for both ORR and OER, which is composed of tungsten disulphide (WS2) and carbon nanotube (CNT) connected via tungsten carbide (WC) bonding. WS2 sheets on the surface of CNTs provide catalytic active sites for electrocatalytic activity while the CNTs act as conduction channels and provide a large surface area. Moreover, the newly formed WC crystalline structure provides an easy path for electron transfer by spin coupling and helps to solve stability issues to enable excellent electrocatalytic activity. In addition, it is found that four to five layers of WS2 sheets on the surface of CNTs produce excellent catalytic activity toward both ORR and OER, which is comparable to noble metals (Pt, RuO2, etc.). These findings show the many advantages enabled by designing highly active, durable, and cost-effective ORR and OER electrocatalysts.
机译：在新兴的可再生能源技术中，提高氧还原反应（ORR）和放氧反应（OER）的电化学性能已引起人们的极大兴趣。这项研究报告了一种适用于ORR和OER的高级双功能混合电催化剂，该催化剂由二硫化钨（WS2）和通过碳化钨（WC）键连接的碳纳米管（CNT）组成。碳纳米管表面上的WS2片材为电催化活性提供了催化活性位，而碳纳米管则充当了传导通道并提供了较大的表面积。此外，新形成的WC晶体结构提供了通过自旋耦合进行电子转移的简便途径，并有助于解决稳定性问题，从而实现出色的电催化活性。另外，发现在CNT表面上的四到五层WS2片对ORR和OER均产生优异的催化活性，这与贵金属（Pt，RuO 2等）相当。这些发现表明，通过设计高活性，耐用且具有成本效益的ORR和OER电催化剂可以实现许多优点。

著录项

  • 来源
    《Advanced energy materials》 |2017年第14期|1602217.1-1602217.9|共9页
  • 作者

    Tiwari Anand P.; Kim Doyoung; Kim Yongshin; Lee Hyoyoung;

  • 作者单位

    IBS, Ctr Integrated Nanostruct Phys CINAP, Suwon 16419, South Korea|Sungkyunkwan Univ SKKU, Dept Chem, Suwon 16419, South Korea;

    IBS, Ctr Integrated Nanostruct Phys CINAP, Suwon 16419, South Korea|Sungkyunkwan Univ SKKU, Dept Energy Sci, Suwon 16419, South Korea;

    IBS, Ctr Integrated Nanostruct Phys CINAP, Suwon 16419, South Korea|Sungkyunkwan Univ SKKU, Dept Chem, Suwon 16419, South Korea;

    IBS, Ctr Integrated Nanostruct Phys CINAP, Suwon 16419, South Korea|Sungkyunkwan Univ SKKU, Dept Chem, Suwon 16419, South Korea|Sungkyunkwan Univ SKKU, Dept Energy Sci, Suwon 16419, South Korea;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 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