...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ACS applied materials & interfaces >An Efficient Bifunctional Electrocatalyst for a Zinc-Air Battery Derived from Fe/N/C and Bimetallic Metal-Organic Framework Composites
【24h】

An Efficient Bifunctional Electrocatalyst for a Zinc-Air Battery Derived from Fe/N/C and Bimetallic Metal-Organic Framework Composites

机译：一种高效的双功能电池，用于衍生自Fe / N / C和双金属 - 有机框架复合材料的锌空气电池

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

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

摘要

Efficient bifunctional electrocatalysts with desirable oxygen activities are closely related to practical applications of renewable energy systems including metalair batteries, fuel cells, and water splitting. Here a composite material derived from a combination of bimetallic zeolitic imidazolate frameworks (denoted as BMZIFs) and Fe/N/C framework was reported as an efficient bifunctional catalyst. Although BMZIF or Fe/N/C alone exhibits undesirable oxygen reaction activity, a combination of these materials shows unprecedented ORR (half-wave potential of 0.85 V as well as comparatively superior OER activities (potential@10 mA cm(-2) of 1.64 V), outperforming not only a commercial Pt/C electrocatalyst but also most reported bifunctional electrocatalysts. We then tested its practical application in Znair batteries. The primary batteries exhibit a high peak power density of 235 mW cm(-2), and the batteries are able to be operated smoothly for 100 cycles at a curent density of 10 mA cm(-2). The unprecedented catalytic activity can be attritued to chemical coupling effects between Fe/N/C and BMZIF and will aid the development of highly active electrocatalysts and applications for electrochemical energy devices.
机译：具有理想的氧气活性的高效双官能电催化剂与可再生能源系统的实际应用密切相关，包括Malitair电池，燃料电池和水分裂。这里，源自双金属沸石咪唑酯骨架（表示为BMZIFS）和Fe / N / C框架的组合的复合材料作为一种有效的双官能催化剂。虽然BMZIF或Fe / N / C单独表现出不希望的氧气反应活性，但这些材料的组合显示出前所未有的ORR（半波电位为0.85V，也有相对优越的OER活动（电位@ 10 mA cm（-2）为1.64 V）不仅优于商用PT / C电催化剂，还表现出大多数报道的双官能电催化剂。然后我们在Znair电池中测试了其实际应用。主要电池表现出235 mW CM（-2）和电池的高峰功率密度能够以10 mA cm（-2）的静音密度平稳地运行100个循环。前所未有的催化活性可以在Fe / N / C和Bmzif之间造成化学偶联效应，并有助于开发高活性电催化剂和电化学能量装置的应用。

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