Recent Advances in Electrocatalysts for Oxygen Reduction Reaction
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TLDR
This comprehensive Review focuses on the low- and non-platinum electrocatalysts including advanced platinum alloys, core-shell structures, palladium-based catalysts, metal oxides and chalcogenides, carbon-based non-noble metal catalysts and metal-free catalysts.Abstract:
The recent advances in electrocatalysis for oxygen reduction reaction (ORR) for proton exchange membrane fuel cells (PEMFCs) are thoroughly reviewed. This comprehensive Review focuses on the low- and non-platinum electrocatalysts including advanced platinum alloys, core–shell structures, palladium-based catalysts, metal oxides and chalcogenides, carbon-based non-noble metal catalysts, and metal-free catalysts. The recent development of ORR electrocatalysts with novel structures and compositions is highlighted. The understandings of the correlation between the activity and the shape, size, composition, and synthesis method are summarized. For the carbon-based materials, their performance and stability in fuel cells and comparisons with those of platinum are documented. The research directions as well as perspectives on the further development of more active and less expensive electrocatalysts are provided.read more
Citations
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Enhancement of microbial fuel cell performance by introducing a nano-composite cathode catalyst
Mounika Kodali,Sergio Herrera,Sadia Kabir,Alexey Serov,Carlo Santoro,Ioannis Ieropoulos,Plamen Atanassov +6 more
TL;DR: Iron aminoantipyrine, graphene nanosheets (GNSs) derived catalysts and their physical mixture Fe-AAPyr-GNS were synthesized and investigated as cathode catalysts for oxygen reduction reaction (ORR) with the activated carbon (AC) as a baseline.
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Icosahedral nanocrystals of noble metals: Synthesis and applications
TL;DR: Icosahedral nanocrystals of noble metals have received ever increasing interest in recent years owing to their unique features such as the size-dependent distribution of strain fields and the presence of a large number of twin boundaries as discussed by the authors.
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N-doped carbon nanocages: Bifunctional electrocatalysts for the oxygen reduction and evolution reactions
TL;DR: In this paper, N-doped carbon nanocages (N-CCs) with a porous self-supported architecture and high specific surface area are synthesized by a facile interfacial assembly synthetic route.
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Programmable Exposure of Pt Active Facets for Efficient Oxygen Reduction
TL;DR: The adsorbed OHads coverage estimation shows fewer OHads on Pt3.5%Ni PF than other PtNi PFs, indicating that enriched Pt (111) facets in the catalysts enable facilitated O2 adsorption for oxygen reduction and thus leading to superior ORR activity.
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One-pot synthesis of Fe/N/S-doped porous carbon nanotubes for efficient oxygen reduction reaction
Zhong Tan,Huanxin Li,Qiaoxia Feng,Lanlan Jiang,Hongyu Pan,Zhongyuan Huang,Qiang Zhou,Haihui Zhou,Shuai Ma,Yafei Kuang +9 more
TL;DR: In this article, a Fe/N/S-doped porous carbon nanotube catalyst was synthesized by a one-pot method using FeCl3 as the flocculant, oxidant, dopant and activating agent.
References
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Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides
TL;DR: Film and powders of TiO2-x Nx have revealed an improvement over titanium dioxide (TiO2) under visible light in optical absorption and photocatalytic activity such as photodegradations of methylene blue and gaseous acetaldehyde and hydrophilicity of the film surface.
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One‐Dimensional Nanostructures: Synthesis, Characterization, and Applications
Younan Xia,Peidong Yang,Yugang Sun,Yiying Wu,Brian Mayers,Byron D. Gates,Yadong Yin,Franklin Kim,Haoquan Yan +8 more
TL;DR: A comprehensive review of 1D nanostructures can be found in this article, where the authors provide a comprehensive overview of current research activities that concentrate on one-dimensional (1D) nanostructure (wires, rods, belts and tubes).
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Origin of the Overpotential for Oxygen Reduction at a Fuel-Cell Cathode
Jens K. Nørskov,Jan Rossmeisl,and Ashildur Logadottir,L. Lindqvist,John R. Kitchin,Thomas Bligaard,Hannes Jónsson +6 more
TL;DR: In this paper, the stability of reaction intermediates of electrochemical processes on the basis of electronic structure calculations was analyzed and a detailed description of the free energy landscape of the electrochemical oxygen reduction reaction over Pt(111) as a function of applied bias was presented.
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Monodisperse FePt Nanoparticles and Ferromagnetic FePt Nanocrystal Superlattices
TL;DR: Thermal annealing converts the internal particle structure from a chemically disordered face- centered cubic phase to the chemically ordered face-centered tetragonal phase and transforms the nanoparticle superlattices into ferromagnetic nanocrystal assemblies that can support high-density magnetization reversal transitions.
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Exceptional chemical and thermal stability of zeolitic imidazolate frameworks
Kyo Sung Park,Zheng Ni,Adrien P. Côté,Jae Yong Choi,Rudan Huang,Fernando J. Uribe-Romo,Hee K. Chae,Michael O'Keeffe,Omar M. Yaghi +8 more
TL;DR: Study of the gas adsorption and thermal and chemical stability of two prototypical members, ZIF-8 and -11, demonstrated their permanent porosity, high thermal stability, and remarkable chemical resistance to boiling alkaline water and organic solvents.