PatentDOI
Metal-free bifunctional electrocatalyst for oxygen reduction and oxygen evolution reactions
Reads0
Chats0
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
Strategic Preparation of Efficient and Durable NiCo Alloy Supported N‐Doped Porous Graphene as an Oxygen Evolution Electrocatalyst: A Theoretical and Experimental Investigation
Santosh K. Singh,Santosh K. Singh,Deepak Kumar,Deepak Kumar,Vishal M. Dhavale,Sourav Pal,Sreekumar Kurungot,Sreekumar Kurungot +7 more
TL;DR: In this paper, a high performance OER electrocatalyst consisting of NiCo alloy nanoparticles supported on high surface area N-doped porous graphene (NiCo/pNGr(75:25)) is reported.
Journal ArticleDOI
A facile surface chemistry approach to bifunctional excellence for perovskite electrocatalysis
Bin Hua,Meng Li,Jing-Li Luo +2 more
TL;DR: In this paper, an easy-to-use surface chemistry approach to activate the perovskite electrocatalysis of both ORR and OER was reported. But perovsites are emerging as a new research frontier for oxygen electrocalysis, yet lack the equivalent activity to noble metals.
Journal ArticleDOI
Hierarchically porous N-doped carbon derived from biomass as oxygen reduction electrocatalyst for high-performance Al–air battery
TL;DR: In this paper, a gas-foaming strategy was proposed to fabricate sustainable and 3D hierarchically porous N-doped carbon with high specific surface area and abundant defects sites derived from biomass.
Journal ArticleDOI
Aerosol-spray metal phosphide microspheres with bifunctional electrocatalytic properties for water splitting
TL;DR: In this article, a two-step aerosol spray-based strategy for the synthesis of various mesoporous monometallic and multimetallic phosphide microspheres was demonstrated. But the development of a general strategy for preparation of metal phosphides has remained challenging.
Journal ArticleDOI
Heteroatom-doped graphene ‘Idli’: A green and foody approach towards development of metal free bifunctional catalyst for rechargeable zinc-air battery
TL;DR: In this article, the performance of heteroatom-doped foams (nitrogen, sulphur, boron and phosphorous) was studied and it was found that sulphur-Doped graphene foam (s-DGF) shows better performance as electrocatalyst, in terms of high BET surface area (499 m2/g), electrochemical surface area(0.271 m2), high roughness factor (0.690) and high porosity.
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).