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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Understanding Catalytic Activity Trends in the Oxygen Reduction Reaction.
TL;DR: This work shows that the performance of the commonly studied materials is limited by unfavorable scaling relationships (for binding energies of reaction intermediates), and presents a number of alternative strategies that may lead to the design and discovery of more promising materials for ORR.
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Multifunctional metal–organic framework catalysts: synergistic catalysis and tandem reactions
TL;DR: In this review, the applications of MOFs with multiple active sites in synergistic organic catalysis, photocatalysis and tandem reactions are discussed and proposed mechanisms are presented in detail.
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Cocatalysts for Selective Photoreduction of CO2 into Solar Fuels.
TL;DR: Various cocatalysts, such as the biomimetic, metal-based,Metal-free, and multifunctional ones, and their selectivity for CO2 photoreduction are summarized and discussed, along with the recent advances in this area.
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Emerging Two-Dimensional Nanomaterials for Electrocatalysis
Huanyu Jin,Chunxian Guo,Xin Liu,Jinlong Liu,Anthony Vasileff,Yan Jiao,Yao Zheng,Shi-Zhang Qiao +7 more
TL;DR: The fundamental relationships between electronic structure, adsorption energy, and apparent activity for a wide variety of 2D electrocatalysts are described with the goal of providing a better understanding of these emerging nanomaterials at the atomic level.
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Energy and fuels from electrochemical interfaces
TL;DR: Common descriptors such as the substrate-hydroxide binding energy and the interactions in the double layer between hydroxide-oxides and H---OH are found to control individual parts of the hydrogen and oxygen electrochemistry that govern the efficiency of water-based energy conversion and storage systems.
References
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Fuel cell technology: nano-engineered multimetallic catalysts
Chuan-Jian Zhong,Jin Luo,Peter N. Njoki,Derrick Mott,Bridgid N. Wanjala,Rameshwori Loukrakpam,Stephanie Lim,Lingyan Wang,Bin Fang,Zhichuan J. Xu +9 more
TL;DR: In this article, the synthesis and processing of molecularly-capped multimetallic nanoparticles, as described in this report, serves as an intriguing way to address this challenge.
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PtPd porous nanorods with enhanced electrocatalytic activity and durability for oxygen reduction reaction
TL;DR: In this article, a bromide-induced galvanic replacement reaction between Pd nanowires and K2PtCl6 was successfully synthesized, and the resulting porous and alloy-structured PtPd nanorods exhibited enhanced catalytic activity for oxygen reduction reaction (ORR).
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Effects of Acid Treatment of Pt-Ni Alloy Nanoparticles@Graphene on the Kinetics of the Oxygen Reduction Reaction in Acidic and Alkaline Solutions
Ke Zhang,Qiaoli Yue,Guifen Chen,Yanling Zhai,Lei Wang,Huaisheng Wang,Jinsheng Zhao,Jifeng Liu,Jianbo Jia,Haibo Li +9 more
TL;DR: In this article, the effect of transition metals from Pt-based alloy catalysts for oxygen reduction reaction (ORR) is studied. But the effect on ORR is not discussed.
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Size Influence on the Oxygen Reduction Reaction Activity and Instability of Supported Pt Nanoparticles
TL;DR: In this article, the size-dependent oxygen reduction reaction activity (ORR) and instability of Pt nanoparticles was investigated on high-surface-area carbon supported Pt NPs below 5 nm in acidic electrolytes using rotating disk electrode method.
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Highly Active Porous Carbon-Supported Nonprecious Metal-N Electrocatalyst for Oxygen Reduction Reaction in PEM Fuel Cells
TL;DR: In this paper, a non-precious catalysts for the oxygen reduction reaction (ORR) were synthesized by deposition of an Fe/Co−Nx composite onto nanoporous carbon black with ethylenediamine (EDA) as a nitrogen precursor.