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
The recent progress of nitrogen-doped carbon nanomaterials for electrochemical batteries
TL;DR: In this article, the use of nitrogen-doped carbon nanomaterials in various electrochemical batteries such as lithium ion batteries, lithium-sulfur batteries, metal-air (oxygen) batteries and sodium ion batteries is discussed with a focus on their electrochemical properties.
Journal ArticleDOI
3D Heteroatom‐Doped Carbon Nanomaterials as Multifunctional Metal‐Free Catalysts for Integrated Energy Devices
TL;DR: Various synthesis processes of 3D porous carbon materials are summarized to understand how their physical and chemical properties together with heteroatom doping dictate the electrochemical catalytic performance.
Journal ArticleDOI
Sulfur-Enriched Conjugated Polymer Nanosheet Derived Sulfur and Nitrogen co-Doped Porous Carbon Nanosheets as Electrocatalysts for Oxygen Reduction Reaction and Zinc–Air Battery
Yuezeng Su,Zhaoquan Yao,Fan Zhang,Hai I. Wang,Zoltan Mics,Enrique Cánovas,Mischa Bonn,Xiaodong Zhuang,Xiaodong Zhuang,Xinliang Feng,Xinliang Feng +10 more
TL;DR: In this paper, a sulfur-enriched conjugated polymer nanosheet (2DP-S) with a high aspect ratio of up to ≈400 is successfully synthesized.
Journal ArticleDOI
Ultrahigh surface area three-dimensional porous graphitic carbon from conjugated polymeric molecular framework
John W. F. To,Zheng Chen,Hong-Bin Yao,Jiajun He,Kwanpyo Kim,Ho-Hsiu Chou,Lijia Pan,Jennifer Wilcox,Yi Cui,Zhenan Bao +9 more
TL;DR: A scalable synthesis of porous graphitic carbons using a conjugated polymeric molecular framework as precursor to maintain micro- and mesoporous structures, while promoting graphitization during carbonization and chemical activation is reported.
Journal ArticleDOI
Electronic and Defective Engineering of Electrospun CaMnO3 Nanotubes for Enhanced Oxygen Electrocatalysis in Rechargeable Zinc–Air Batteries
Shengjie Peng,Shengjie Peng,Shengjie Peng,Xiaopeng Han,Xiaopeng Han,Xiaopeng Han,Linlin Li,Linlin Li,Shulei Chou,Shulei Chou,Shulei Chou,Dongxiao Ji,Huangjiao Huang,Yonghua Du,Jian Liu,Seeram Ramakrishna +15 more
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).