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Nanosized Metal Phosphides Embedded in Nitrogen‐Doped Porous Carbon Nanofibers for Enhanced Hydrogen Evolution at All pH Values
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-01-12 , DOI: 10.1002/anie.201710150 Min-Qiang Wang 1 , Cui Ye 2 , Heng Liu 1 , Maowen Xu 1 , Shu-Juan Bao 1
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2018-01-12 , DOI: 10.1002/anie.201710150 Min-Qiang Wang 1 , Cui Ye 2 , Heng Liu 1 , Maowen Xu 1 , Shu-Juan Bao 1
Affiliation
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Transition‐metal phosphides (TMPs) have emerged as promising catalyst candidates for the hydrogen evolution reaction (HER). Although numerous methods have been investigated to obtain TMPs, most rely on traditional synthetic methods that produce materials that are inherently deficient with respect to electrical conductivity. An electrospinning‐based reduction approach is presented, which generates nickel phosphide nanoparticles in N‐doped porous carbon nanofibers (Ni2P@NPCNFs) in situ. Ni2P nanoparticles are protected from irreversible fusion and aggregation in subsequent high‐temperature pyrolysis. The resistivity of Ni2P@NPCNFs (5.34 Ω cm) is greatly decreased by 104 times compared to Ni2P (>104 Ω cm) because N‐doped carbon NFs are incorporated. As an electrocatalyst for HER, Ni2P@NPCNFs reveal remarkable performance compared to other previously reported catalysts in acidic media. Additionally, it offers excellent catalytic ability and durability in both neutral and basic media. Encouraged by the excellent electrocatalytic performance of Ni2P@NPCNFs, a series of pea‐like MxP@NPCNFs, including Fe2P@NPCNFs, Co2P@NPCNFs, and Cu3P@NPCNFs, were synthesized by the same method. Detailed characterization suggests that the newly developed method could render combinations of ultrafine metal phosphides with porous carbon accessible; thereby, extending opportunities in electrocatalytic applications.
中文翻译：
嵌入氮掺杂的多孔碳纳米纤维中的纳米级金属磷酸盐可在所有pH值下增强氢气的释放
过渡金属磷化物（TMP）已成为氢释放反应（HER）的有希望的催化剂候选物。尽管已研究了许多获得TMP的方法，但大多数方法都依赖于传统的合成方法，这些方法生产的材料固有地缺乏导电性。提出了一种基于静电纺丝的还原方法，该方法可在掺N的多孔碳纳米纤维（Ni 2 P @ NPCNFs）中原位生成磷化镍纳米颗粒。Ni 2 P纳米颗粒在随后的高温热解过程中受到不可逆的融合和聚集的保护。与Ni 2 P（> 10）相比，Ni 2 P @ NPCNFs（5.34Ωcm）的电阻率大大降低了10 4倍4 Ω厘米），因为N型掺杂碳的NF被并入。与其他先前报道的酸性介质中的催化剂相比，Ni 2 P @ NPCNFs作为HER的电催化剂表现出了卓越的性能。此外，它在中性和碱性介质中均具有出色的催化能力和耐久性。受Ni 2 P @ NPCNFs优异的电催化性能的鼓励，一系列类似豌豆的M x P @ NPCNFs，包括Fe 2 P @ NPCNFs，Co 2 P @ NPCNFs和Cu 3用相同的方法合成了P @ NPCNF。详细的特征表明，新开发的方法可以使超细金属磷化物与多孔碳的结合成为可能。从而扩展了电催化应用的机会。
更新日期：2018-01-12
中文翻译：
嵌入氮掺杂的多孔碳纳米纤维中的纳米级金属磷酸盐可在所有pH值下增强氢气的释放
过渡金属磷化物（TMP）已成为氢释放反应（HER）的有希望的催化剂候选物。尽管已研究了许多获得TMP的方法，但大多数方法都依赖于传统的合成方法，这些方法生产的材料固有地缺乏导电性。提出了一种基于静电纺丝的还原方法，该方法可在掺N的多孔碳纳米纤维（Ni 2 P @ NPCNFs）中原位生成磷化镍纳米颗粒。Ni 2 P纳米颗粒在随后的高温热解过程中受到不可逆的融合和聚集的保护。与Ni 2 P（> 10）相比，Ni 2 P @ NPCNFs（5.34Ωcm）的电阻率大大降低了10 4倍4 Ω厘米），因为N型掺杂碳的NF被并入。与其他先前报道的酸性介质中的催化剂相比，Ni 2 P @ NPCNFs作为HER的电催化剂表现出了卓越的性能。此外，它在中性和碱性介质中均具有出色的催化能力和耐久性。受Ni 2 P @ NPCNFs优异的电催化性能的鼓励，一系列类似豌豆的M x P @ NPCNFs，包括Fe 2 P @ NPCNFs，Co 2 P @ NPCNFs和Cu 3用相同的方法合成了P @ NPCNF。详细的特征表明，新开发的方法可以使超细金属磷化物与多孔碳的结合成为可能。从而扩展了电催化应用的机会。
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