• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced Functional Materials >Bifunctional Heterostructure Assembly of NiFe LDH Nanosheets on NiCoP Nanowires for Highly Efficient and Stable Overall Water Splitting
【24h】

Bifunctional Heterostructure Assembly of NiFe LDH Nanosheets on NiCoP Nanowires for Highly Efficient and Stable Overall Water Splitting

机译：NiFeP纳米线上的NiFe LDH纳米片的双功能异质结构组装，用于高效稳定地进行总水分解

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

3D hierarchical heterostructure NiFe LDH@ NiCoP/NF electrodes are prepared successfully on nickel foam with special interface engineering and synergistic effects. This research finds that the as-prepared NiFe LDH@ NiCoP/NF electrodes have a more sophisticated inner structure and intensive interface than a simple physical mixture. The NiFe LDH@ NiCoP/NF electrodes require an overpotential as low as 120 and 220 mV to deliver 10 mA cm(-2) for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in 1 M KOH, respectively. Tafel and electrochemical impedance spectroscopy further reveal a favorable kinetic during electrolysis. Specifically, the NiFe LDH@ NiCoP/NF electrodes are simultaneously used as cathode and anode for overall water splitting, which requires a cell voltage of 1.57 V at 10 mA cm(-2). Furthermore, the synergistic effect of the heterostructure improves the structural stability and promotes the generation of active phases during HER and OER, resulting in excellent stability over 100 h of continuous operation. Moreover, the strategy and interface engineering of the introduced heterostructure can also be used to prepare other bifunctional and cost-efficient electrocatalysts for various applications.
机译：在特殊的界面工程和协同作用下，成功地在泡沫镍上制备了3D分层异质结构NiFe LDH @ NiCoP / NF电极。这项研究发现，与简单的物理混合物相比，所制备的NiFe LDH @ NiCoP / NF电极具有更复杂的内部结构和紧密的界面。 NiFe LDH @ NiCoP / NF电极需要低至120和220 mV的超电势才能分别在1 M KOH中提供10 mA cm（-2）的氢气生成反应（HER）和氧气生成反应（OER）。 Tafel和电化学阻抗谱进一步揭示了电解过程中的良好动力学。具体来说，NiFe LDH @ NiCoP / NF电极同时用作整体水分解的阴极和阳极，这需要在10 mA cm（-2）时电池电压为1.57V。此外，异质结构的协同作用改善了结构稳定性，并促进了HER和OER过程中活性相的生成，从而在连续运行100小时内具有出色的稳定性。此外，引入的异质结构的策略和界面工程也可以用于制备用于各种应用的其他双功能且经济高效的电催化剂。

著录项

  • 来源
    《Advanced Functional Materials》 |2018年第14期|1706847.1-1706847.11|共11页
  • 作者

    Zhang Haojie; Li Xiaopeng; Haehnel Angelika; Naumann Volker; Lin Chao; Azimi Sara; Schweizer Stefan L.; Maijenburg A. Wouter; Wehrspohn Ralf B.;

  • 作者单位

    Martin Luther Univ Halle Wittenberg, Inst Phys, Heinrich Damerow Str 4, D-06120 Halle, Salle, Germany;

    Chinese Acad Sci, SARI, CAS Key Lab Low Carbon Convers Sci & Engn, 100 Haike Rd, Shanghai 201210, Peoples R China;

    Fraunhofer Inst Microstruct Mat & Syst IMWS, Walter Hulse Str 1, D-06120 Halle, Salle, Germany;

    Fraunhofer Ctr Silicon Photovolta CSP, Otto Eissfeldt Str 12, D-06120 Halle, Salle, Germany;

    Chinese Acad Sci, SARI, CAS Key Lab Low Carbon Convers Sci & Engn, 100 Haike Rd, Shanghai 201210, Peoples R China;

    Max Planck Inst Microstruct Phys, Weinbergweg 2, D-06120 Halle, Saale, Germany;

    Martin Luther Univ Halle Wittenberg, Inst Phys, Heinrich Damerow Str 4, D-06120 Halle, Salle, Germany;

    Martin Luther Univ Halle Wittenberg, ZIK SiLinano, Karl Freiherr von Fritsch Str 3, D-06120 Halle, Salle, Germany;

    Martin Luther Univ Halle Wittenberg, Inst Phys, Heinrich Damerow Str 4, D-06120 Halle, Salle, Germany;

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

    bifunctional electrocatalysts; hydrogen evolution reaction (HER); metal phosphide; oxygen evolution reaction (OER); synergistic effect;

    机译：双功能电催化剂;析氢反应（HER）;金属磷化物;析氧反应（OER）;协同效应;

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