Ru nanoparticles encapsulated in ZIFs-derived porous N-doped hierarchical carbon nanofibers for enhanced hydrogen evolution reaction,Catalysis Science & Technology

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Ru nanoparticles encapsulated in ZIFs-derived porous N-doped hierarchical carbon nanofibers for enhanced hydrogen evolution reaction
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2020-09-07 , DOI: 10.1039/d0cy01232g
Libing Fan _{1,

2,

3,

4,

5} , Tian Meng _{4,

5,

6,

7,

8} , Qun Li _{4,

5,

6,

7,

8} , Dewen Wang _{4,

5,

6,

7,

8} , Zhicai Xing _{4,

5,

6,

7,

8} , Erkang Wang _{1,

2,

3,

4,

5} , Xiurong Yang _{4,

5,

6,

7,

8}

Affiliation

Ruthenium (Ru)-based materials have been proven to be highly efficient hydrogen evolution reaction (HER) electrocatalysts and have become the most promising candidates for replacing platinum (Pt)-based electrocatalysts. Herein, we report an easily scalable electrospinning strategy to construct nitrogen-doped carbon nanofibers with porous hierarchical structures and uniformly dispersed Ru nanoparticles (abbreviated as ES-Ru-ZIF-900). Benefiting from the porous fibrous nanoarchitecture caused by the pyrolysis of the zeolitic imidazolate framework-8, the abundant firmly immobilized Ru NPs, and the high conductivity of the N-doped carbon matrix, the resultant ES-Ru-ZIF-900 electrocatalyst exhibits an extraordinary HER performance. ES-Ru-ZIF-900 only needs an overpotential of 21 mV to drive the current density of 10 mA cm⁻², and possesses long durability for over 14 h in 1.0 M KOH, superior to Pt/C and most of the non-Pt based electrocatalysts. This work offers a universal and efficient synthetic strategy for preparing metal-based nitrogen-doped carbon hybrid catalysts with enhanced HER activity.

中文翻译：

Ru纳米颗粒包裹在ZIFs衍生的多孔N掺杂分层碳纳米纤维中，用于增强氢释放反应

钌（Ru）基材料已被证明是高效的氢气析出反应（HER）电催化剂，并且已成为替代铂（Pt）基电催化剂的最有希望的候选者。在本文中，我们报告了一种易于扩展的静电纺丝策略，以构建具有多孔分层结构和均匀分散的Ru纳米颗粒（缩写为ES-Ru-ZIF-900）的氮掺杂碳纳米纤维。ES-Ru-ZIF-900电催化剂得益于沸石咪唑酸盐骨架8的热解所产生的多孔纤维纳米结构，牢固固定的大量Ru NP和高掺杂的N掺杂碳基体。她的表现。ES-Ru-ZIF-900仅需要21 mV的超电势即可驱动10 mA cm ^-2的电流密度，并且在1.0 M KOH中具有超过14小时的长期耐久性，优于Pt / C和大多数非Pt基电催化剂。这项工作为制备具有增强的HER活性的金属基氮掺杂碳杂化催化剂提供了一种通用而有效的合成策略。

更新日期：2020-09-17

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