Journal ArticleDOI
Efficient oxygen reduction catalysts formed of cobalt phosphide nanoparticle decorated heteroatom-doped mesoporous carbon nanotubes
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TLDR
Oxygen reduction catalysts based on heteroatom-doped mesoporous carbon nanotubes loaded with Co2P nanoparticles were skilfully fabricated and could strongly promote the ORR catalytic performance of the heteroatomatic carbon structures.About:
This article is published in Chemical Communications.The article was published on 2015-04-23. It has received 84 citations till now. The article focuses on the topics: Nanomaterial-based catalyst & Carbon nanotube.read more
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Nonprecious Metal Catalysts for Oxygen Reduction in Heterogeneous Aqueous Systems
TL;DR: A comprehensive review of recent advances in the field of oxygen reduction electrocatalysis utilizing nonprecious metal catalysts is presented and suggestions and direction for future research to develop and understand NPM catalysts with enhanced ORR activity are provided.
Journal ArticleDOI
MOF-Derived Bifunctional Cu3 P Nanoparticles Coated by a N,P-Codoped Carbon Shell for Hydrogen Evolution and Oxygen Reduction.
TL;DR: This strategy of using a diverse MOF as a structural and compositional material to create a new multifunctional composite/hybrid may expand the opportunities to explore highly efficient and robust non-noble-metal catalysts for energy-conversion reactions.
Journal ArticleDOI
Surface Oxidized Cobalt-Phosphide Nanorods As an Advanced Oxygen Evolution Catalyst in Alkaline Solution
Abstract: Electrochemical water splitting in alkaline solution plays a growing role in alternative energy devices due to the need for clean and sustainable energy. However, catalysts that are active for both hydrogen evolution and oxygen evolution reactions are rare. Herein, we demonstrate that cobalt phosphide (CoP), which was synthesized via the hydrothermal route and has been shown to have hydrogen evolution activity, is highly active for oxygen evolution. A current density of 10 mA cm–2 was generated at an overpotential of only 320 mV in 1 M KOH for a CoP nanorod-based electrode (CoP NR/C), which was competitive with commercial IrO2. The Tafel slope for CoP NR/C was only 71 mV dec–1, and the catalyst maintained high stability during a 12 h test. This high activity was attributed to the formation of a thin layer of ultrafine crystalline cobalt oxide on the CoP surface.
Journal ArticleDOI
Earth-Rich Transition Metal Phosphide for Energy Conversion and Storage
TL;DR: In this paper, the underlying mechanism between the structural and crystallographic characteristics and the tuned properties of transition metal phosphides (TMPs) in energy applications is presented, and the key trends in structure and morphology characterization of TMPs are highlighted.
Journal ArticleDOI
Sulfur-doped cobalt phosphide nanotube arrays for highly stable hybrid supercapacitor
Abdelnaby M. Elshahawy,Cao Guan,Xin Li,Hong Zhang,Yating Hu,Haijun Wu,Stephen J. Pennycook,John Wang +7 more
TL;DR: In this paper, an efficient sulfidization strategy is successfully established to improve the overall electrochemical performance of metal phosphides, and a hybrid supercapacitor was fabricated using sulfur-doped CoP as the positive electrode, which can deliver a maximum energy density of 39 W/h/kg at a power density of 0.8 W/kW/kg.
References
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Journal ArticleDOI
Sulfur-doped graphene as an efficient metal-free cathode catalyst for oxygen reduction.
Zhi Yang,Zhen Yao,Guifa Li,Guoyong Fang,Huagui Nie,Zheng Liu,Xuemei Zhou,Xi'an Chen,Shaoming Huang +8 more
TL;DR: The experimental results are believed to be significant because they not only give further insight into the ORR mechanism of these metal-free doped carbon materials, but also open a way to fabricate other new low-cost NPMCs with high electrocatalytic activity by a simple, economical, and scalable approach for real FC applications.
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Recent advances in non-precious metal catalysis for oxygen-reduction reaction in polymer electrolyte fuel cells
Frédéric Jaouen,Eric Proietti,Michel Lefèvre,Régis Chenitz,Jean-Pol Dodelet,Gang Wu,Hoon T Chung,Christina Johnston,Piotr Zelenay +8 more
TL;DR: In this paper, the authors focus on the new synthesis methods that have led to these breakthroughs and analyze the improvements required from NPMC-based catalysts to match the performance of Pt-based cathodes, even at high current density.
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Mechanisms of Oxygen Reduction Reaction on Nitrogen-Doped Graphene for Fuel Cells
Lipeng Zhang,Zhenhai Xia +1 more
TL;DR: In this paper, the authors used density functional theory (DFT) to demonstrate that the oxygen reduction reaction (ORR) on N-doped graphene is a direct fourelectron pathway, which is consistent with the experimental observations.
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Boron-doped carbon nanotubes as metal-free electrocatalysts for the oxygen reduction reaction.
Lijun Yang,Shujuan Jiang,Yu Zhao,Lei Zhu,Sheng Chen,Xizhang Wang,Qiang Wu,Jing Ma,Yanwen Ma,Yanwen Ma,Zheng Hu +10 more
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Hierarchically porous carbons with optimized nitrogen doping as highly active electrocatalysts for oxygen reduction
TL;DR: This work reports a highly active nitrogen-doped, carbon-based, metal-free oxygen reduction reaction electrocatalyst, prepared by a hard-templating synthesis, for which nitrogen-enriched aromatic polymers and colloidal silica are used as precursor and template, respectively, followed by ammonia activation.