• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanoscale >Encapsulation of Ni/Fe3O4 heterostructures inside onion-like N-doped carbon nanorods enables synergistic electrocatalysis for water oxidation
【24h】

Encapsulation of Ni/Fe3O4 heterostructures inside onion-like N-doped carbon nanorods enables synergistic electrocatalysis for water oxidation

机译：里面封装Ni / Fe3O4异质结构洋葱式的n型碳纳米棒使协同水氧化的电催化作用

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

The rational modulation of composition and structure is critical for the development of robust and efficient oxygen evolution reaction (OER) catalysts for water splitting. In this study, an onion-like N-doped carbon nanorods hybrid (denoted as ONC) with encapsulated Ni/Fe3O4 heterostructures has been fabricated by the pyrolysis of an NiFe-based coordination polymer under a N-2 atmosphere. The nanorod-like morphology is transferred from the polymer to the hybrids and generates ONC nanolayers encapsulated with core-shell Ni/Fe3O4 nanostructures. The synergistic effects between the ONC layers and the encapsulated Ni/Fe3O4 heterostructures result in high electronic conductivity due to the nitrogen-doped carbon with an appropriate level of defects and enlarged electrochemical surface area due to the well-defined mesoporous morphology. Compared with Ni@ONC, Fe3O4@ONC, NiFe2O4 and commercial RuO2 electrocatalysts, the as-prepared Ni/Fe3O4@ONC exhibits extraordinary electrocatalytic activity for water oxidation with an overpotential of merely 296 mV at 10 mA cm(-2) and a small Tafel slope of 61 mV dec(-1). This Ni/Fe3O4@ONC OER catalyst highlights the great potential of integrating hetero-composite nanocatalysts with hetero-atom doped nanocarbon supports for the development of high-performance electrocatalysts for renewable energy applications.
机译：理性的成分和调制结构的发展是至关重要的健壮和高效的氧发生反应(在)催化剂对水分裂。研究中,一个洋葱式的n型碳纳米棒混合动力与封装(ONC)来表示Ni / Fe3O4异质结构所编造的的热解NiFe-based协调聚合物-下气氛。从聚合物的形态转化混合动力车和生成ONC nanolayers封装核壳Ni / Fe3O4纳米结构。ONC层和之间的协同效应封装Ni / Fe3O4异质结构的结果在高电子导电性由于nitrogen-doped碳和一个合适的水平的缺陷,扩大电化学表面区域由于定义良好的介孔形态。NiFe2O4和商业RuO2 electrocatalysts,和Ni / Fe3O4@ONC展品非同寻常electrocatalytic活动对水氧化仅仅296 mV的过电压10马厘米(2)和一个小塔费尔61 mV 12月(1)的斜率。强调了这个Ni / Fe3O4@ONC OER催化剂集成hetero-composite的巨大潜力和杂原子掺杂nanocarbon nanocatalysts支持发展的高性能electrocatalysts为可再生能源应用程序。

著录项

相似文献

  • 外文文献
  • 中文文献
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