PatentDOI
Metal-free bifunctional electrocatalyst for oxygen reduction and oxygen evolution reactions
TLDR
A mesoporous carbon foam co-doped with nitrogen and phosphorus that has a large surface area and good electrocatalytic properties for both ORR and OER and is tested as an air electrode for primary and rechargeable Zn-air batteries.Abstract:
A co-doped carbon material, methods of making such materials, and electrochemical cells and devices comprising such materials are provided. The co-doped carbon material comprises a mesoporous carbon material doped with nitrogen and phoshporous (NPMC). The present NPMC exhibit catalytic activity for both oxygen reduction reaction and oxygen evolution reaction and may be useful as an electrode in an electrochemical cell and particularly as part of a battery. The present NPMC materials may be used as electrodes in primary zinc-air batteries and in rechargeable zinc-air batteries and many other energy systems.read more
Citations
More filters
Journal ArticleDOI
Origin of the high oxygen reduction reaction of nitrogen and sulfur co-doped MOF-derived nanocarbon electrocatalysts
Zhongxin Song,Wei-Wei Liu,Niancai Cheng,Mohammad Norouzi Banis,Xia Li,Qian Sun,Biwei Xiao,Yulong Liu,Andrew Lushington,Ruying Li,Li-Min Liu,Xueliang Sun +11 more
TL;DR: In this article, a metal-organic framework (MOF)-based N,S-co-doped nanocarbon was used as an electrocatalyst towards ORR.
Journal ArticleDOI
Phosphorus-containing carbons: Preparation, properties and utilization
TL;DR: In this paper, a review of phosphorus-containing carbon materials is presented, focusing on their preparation, properties and applications, and the preparation methods include carbonization of carbon precursors with phosphorus compounds, modification of already prepared carbons and deposition of carbon and phosphorus from the gas phase.
Journal ArticleDOI
Nitrogen and Iron-Codoped Carbon Hollow Nanotubules as High-Performance Catalysts toward Oxygen Reduction Reaction: A Combined Experimental and Theoretical Study
Bingzhang Lu,Tyler J. Smart,Dongdong Qin,Jia En Lu,Nan Wang,Limei Chen,Yi Peng,Yuan Ping,Shaowei Chen +8 more
TL;DR: In this article, Fe and N codoped porous carbon nanotubules were prepared by controlled pyrolysis of tellurium nanowire-supported melamine formaldehyde polymer core-sheath nanofibers at elevated temperatures.
Journal ArticleDOI
Surface-modulated palladium-nickel icosahedra as high-performance non-platinum oxygen reduction electrocatalysts
TL;DR: Simulations reveal that the Pd icosahedra decorated with Ni atoms emerged in the subsurface can weaken the interaction between the adsorbed oxygen and Pd (111) facet and enhance the ORR activities due to an obvious shift of d-band center.
Journal ArticleDOI
Boosting water oxidation on metal-free carbon nanotubes via directional interfacial charge-transfer induced by an adsorbed polyelectrolyte
Chunshao Mo,Junhua Jian,Jing Li,Zhengsong Fang,Zhe Zhao,Zhongke Yuan,Meijia Yang,You Zhang,Liming Dai,Dingshan Yu +9 more
TL;DR: In this article, instead of conventional covalent doping, the concept of interfacial charge transfer doping of carbon nanotubes (CNTs) to noncovalently adsorb certain polyelectrolytes (i.e. poly(diallyldimethylammonium chloride), PDDA, acceptor) onto pure CNTs (donor) to act as a buffer layer for richening reactants (OH−) via electrostatic interaction, which not only improves the reaction kinetics but also creates a high density of catalytic carbon sites, eventually
References
More filters
Journal ArticleDOI
Electrical Energy Storage for the Grid: A Battery of Choices
TL;DR: The battery systems reviewed here include sodium-sulfur batteries that are commercially available for grid applications, redox-flow batteries that offer low cost, and lithium-ion batteries whose development for commercial electronics and electric vehicles is being applied to grid storage.
Journal ArticleDOI
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.
Journal ArticleDOI
Nitrogen-doped carbon nanotube arrays with high electrocatalytic activity for oxygen reduction.
TL;DR: It is reported that vertically aligned nitrogen-containing carbon nanotubes (VA-NCNTs) can act as a metal-free electrode with a much better electrocatalytic activity, long-term operation stability, and tolerance to crossover effect than platinum for oxygen reduction in alkaline fuel cells.
Journal ArticleDOI
Universality in Oxygen Evolution Electrocatalysis on Oxide Surfaces
Isabela C. Man,Hai-Yan Su,Federico Calle-Vallejo,Heine Anton Hansen,José I. Martínez,Nilay İnoğlu,John R. Kitchin,Thomas F. Jaramillo,Jens K. Nørskov,Jan Rossmeisl +9 more
TL;DR: In this article, a large database of HO* and HOO* adsorption energies on oxide surfaces was used to analyze the reaction free energy diagrams of all the oxides in a general way.
Journal ArticleDOI
Sulfur and Nitrogen Dual-Doped Mesoporous Graphene Electrocatalyst for Oxygen Reduction with Synergistically Enhanced Performance†
TL;DR: In this paper, Mesoporous graphene doped with both N and S atoms (N-S-G) was prepared in one step and studied as an electrochemical catalyst for the oxygen reduction reaction (ORR).