Sub-50 nm Iron–Nitrogen-Doped Hollow Carbon Sphere-Encapsulated Iron Carbide Nanoparticles as Efficient Oxygen Reduction Catalysts
Haibo Tan,Haibo Tan,Haibo Tan,Yunqi Li,Yunqi Li,Jeonghun Kim,Toshiaki Takei,Zhongli Wang,Xingtao Xu,Jie Wang,Yoshio Bando,Yoshio Bando,Yong-Mook Kang,Jing Tang,Yusuke Yamauchi +14 more
TLDR
Fe3C‐Fe,N/C hollow spheres exhibit an ORR performance comparable to that of commercially available 20 wt% Pt/C in alkaline electrolyte, with a similar half‐wave potential, an electron transfer number close to 4, and lower H2O2 yield of less than 5%.Abstract:
Sub-50 nm iron-nitrogen-doped hollow carbon sphere-encapsulated iron carbide nanoparticles (Fe3C-Fe,N/C) are synthesized by using a triblock copolymer of poly(styrene-b-2-vinylpyridine-b-ethylene oxide) as a soft template. Their typical features, including a large surface area (879.5 m2 g-1), small hollow size (≈16 nm), and nitrogen-doped mesoporous carbon shell, and encapsulated Fe3C nanoparticles generate a highly active oxygen reduction reaction (ORR) performance. Fe3C-Fe,N/C hollow spheres exhibit an ORR performance comparable to that of commercially available 20 wt% Pt/C in alkaline electrolyte, with a similar half-wave potential, an electron transfer number close to 4, and lower H2O2 yield of less than 5%. It also shows noticeable ORR catalytic activity under acidic conditions, with a high half-wave potential of 0.714 V, which is only 59 mV lower than that of 20 wt% Pt/C. Moreover, Fe3C-Fe,N/C has remarkable long-term durability and tolerance to methanol poisoning, exceeding Pt/C regardless of the electrolyte.read more
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A Stable Bifunctional Catalyst for Rechargeable Zinc–Air Batteries: Iron–Cobalt Nanoparticles Embedded in a Nitrogen‐Doped 3D Carbon Matrix
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Versatile Nanoemulsion Assembly Approach to Synthesize Functional Mesoporous Carbon Nanospheres with Tunable Pore Sizes and Architectures
Liang Peng,Chin-Te Hung,Shuwen Wang,Xingmiao Zhang,Xiaohang Zhu,Zaiwang Zhao,Changyao Wang,Yun Tang,Wei Li,Dongyuan Zhao +9 more
TL;DR: A versatile nanoemulsion assembly approach to prepare N-doped mesoporous carbon nanospheres with high uniformity and large tunable pore sizes (5-37 nm), which deliver high current density and excellent durability toward oxygen reduction reaction in alkaline solution.
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Capacitive deionization using nitrogen-doped mesostructured carbons for highly efficient brackish water desalination
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TL;DR: In this article, nitrogen-doped mesostructured carbon nanocrystals (NMCs) have been developed by direct carbonization of highly ordered messtructured polymers.
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TL;DR: Compared with single-atom Pt supported on carbon (Pt SA/C) and Pt nanoparticles supported on WO 3-x, this strategy provides a new framework for enhancing catalytic activity for HER, by reducing noble metal usage in the field of SACs.
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References
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Journal Article
High-Performance Electrocatalysts for Oxygen Reduction Derived from Polyaniline, Iron, and Cobalt
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