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
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Journal ArticleDOI
Hydrothermal Synthesis of Boron and Nitrogen Codoped Hollow Graphene Microspheres with Enhanced Electrocatalytic Activity for Oxygen Reduction Reaction
Zhongqing Jiang,Xinsheng Zhao,Xiaoning Tian,Lijuan Luo,Jianghua Fang,Haoqi Gao,Zhong-Jie Jiang +6 more
TL;DR: Boron and nitrogen codoped hollow graphene microspheres, synthesized from a simple template sacrificing method, have been employed as an electrocatalyst for the oxygen reduction reaction (ORR) with great potential to replace the commonly used noble-metal-based catalysts.
Journal ArticleDOI
Sulfur and nitrogen enriched graphene foam scaffolds for aqueous rechargeable zinc-iodine battery
TL;DR: In this paper, a 3D porous graphene framework with sulfur and nitrogen co-doping was proposed to enhance the Coulombic efficiency of a rechargeable zinc-iodine battery.
Journal ArticleDOI
Nanowires assembled from MnCo2O4@C nanoparticles for water splitting and all-solid-state supercapacitor
Chencheng Sun,Jun Yang,Ziyang Dai,Xuewan Wang,Yufei Zhang,Laiquan Li,Peng Chen,Wei Huang,Xiaochen Dong +8 more
TL;DR: In this paper, mixed transition metal oxide nanoparticles encapsulated in nitrogendoped carbon (denoted as AB2O4@NC) were developed using a one-pot protocol, wherein a metal-organic complex was adopted as the precursor.
Journal ArticleDOI
Realizing the Synergy of Interface Engineering and Chemical Substitution for Ni3N Enables its Bifunctionality Toward Hydrazine Oxidation Assisted Energy-Saving Hydrogen Production
Journal ArticleDOI
3D hierarchical nitrogen-doped carbon nanoflower derived from chitosan for efficient electrocatalytic oxygen reduction and high performance lithium–sulfur batteries
Daying Guo,Wei Huifang,Xi'an Chen,Menglan Liu,Feng Ding,Zhi Yang,Yun Yang,Shaobin Wang,Keqin Yang,Shaoming Huang,Shaoming Huang +10 more
TL;DR: In this paper, a 3D hierarchical N-doped carbon nanoflower (NCNF) using low-cost chitosan as the nitrogen and carbon source by a silica template method is presented.
References
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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).