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首页> 外文期刊>Advanced Functional Materials >3D Self-Supported Fe-Doped Ni2P Nanosheet Arrays as Bifunctional Catalysts for Overall Water Splitting
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3D Self-Supported Fe-Doped Ni2P Nanosheet Arrays as Bifunctional Catalysts for Overall Water Splitting

机译：3D自支撑的Fe掺杂Ni2P纳米片阵列作为双功能催化剂，用于总水分解

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摘要

The development of highly efficient bifunctional electrocatalysts for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is crucial for improving the efficiency of overall water splitting, but still remains challenging issue. Herein, 3D self-supported Fe-doped Ni2P nanosheet arrays are synthesized on Ni foam by hydrothermal method followed by in situ phosphorization, which serve as bifunctional electrocatalysts for overall water splitting. The as-synthesized (Ni0.33Fe0.67)(2)P with moderate Fe doping shows an outstanding OER performance, which only requires an overpotential of approximate to 230 mV to reach 50 mA cm(-2) and is more efficient than the other Fe incorporated Ni2P electrodes. In addition, the (Ni0.33Fe0.67)(2)P exhibits excellent activity toward HER with a small overpotential of approximate to 214 mV to reach 50 mA cm(-2). Furthermore, an alkaline electrolyzer is measured using (Ni0.33Fe0.67)(2)P electrodes as cathode and anode, respectively, which requires cell voltage of 1.49 V to reach 10 mA cm(-2) as well as shows excellent stability with good nanoarray construction. Such good performance is attributed to the high intrinsic activity and superaerophobic surface property.
机译：开发用于氢气析出反应（HER）和氧气析出反应（OER）的高效双功能电催化剂对于提高整体水分解的效率至关重要，但仍然是一个具有挑战性的问题。在此，通过水热法，然后在原位磷化，在Ni泡沫上合成3D自支撑的Fe掺杂的Ni 2 P纳米片阵列，其用作整体水分解的双功能电催化剂。合成后的（Ni0.33Fe0.67）（2）P具有适度的Fe掺杂显示出卓越的OER性能，仅需约230 mV的过电势即可达到50 mA cm（-2），并且比其他含Fe的Ni2P电极。此外，（Ni0.33Fe0.67）（2）P对HER表现出出色的活性，并具有约214 mV的小过电位，达到50 mA cm（-2）。此外，分别使用（Ni0.33Fe0.67）（2）P电极作为阴极和阳极来测量碱性电解槽，这需要1.49 V的电池电压才能达到10 mA cm（-2）并显示优异的稳定性。好的纳米阵列结构。这样好的性能归因于高的内在活性和超好氧的表面性质。

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  • 来源
    《Advanced Functional Materials》 |2017年第37期|1702513.1-1702513.8|共8页
  • 作者

    Li Yingjie; Zhang Haichuan; Jiang Ming; Zhang Qian; He Peilei; Sun Xiaoming;

  • 作者单位

    Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Coll Energy, State Key Lab Chem Resource Engn, POB 98, Beijing 100029, Peoples R China;

    Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Coll Energy, State Key Lab Chem Resource Engn, POB 98, Beijing 100029, Peoples R China;

    Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Coll Energy, State Key Lab Chem Resource Engn, POB 98, Beijing 100029, Peoples R China;

    Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Coll Energy, State Key Lab Chem Resource Engn, POB 98, Beijing 100029, Peoples R China;

    Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Coll Energy, State Key Lab Chem Resource Engn, POB 98, Beijing 100029, Peoples R China|Nanyang Technol Univ, Sch Chem & Biomed Engn, 62 Nanyang Dr, Singapore 637459, Singapore;

    Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Coll Energy, State Key Lab Chem Resource Engn, POB 98, Beijing 100029, Peoples R China;

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

    bifunctional materials; Fe-doped Ni2P; nanoarrays; overall water splitting;

    机译：双功能材料掺杂铁的Ni2P纳米阵列整体水分解;

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