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
Hierarchical sulfur and nitrogen co-doped carbon nanocages as efficient bifunctional oxygen electrocatalysts for rechargeable Zn-air battery
Hao Fan,Yu Wang,Fujie Gao,Longqi Yang,Meng Liu,Xiao Du,Peng Wang,Lijun Yang,Qiang Wu,Xizhang Wang,Zheng Hu +10 more
TL;DR: In this paper, a 3D hierarchical sulfur and nitrogen co-doped carbon nanocages (hSNCNC) was proposed as a promising bifunctional oxygen electrocatalyst by an in-situ MgO template method with pyridine and thiophene as the mixed precursor.
Journal ArticleDOI
Strongly coupling of Co9S8/Zn-Co-S heterostructures rooted in carbon nanocages towards efficient oxygen evolution reaction
Ziliang Chen,Miao Liu,Renbing Wu +2 more
TL;DR: In this paper, a hybrid composite constructed from Co9S8/Co-doped ZnS (Zn0.8Co0.2S) nanorods with the atomic-level coupled nanointerface rooted in porous carbon polyhedra was fabricated and investigated as a highly efficient electrocatalyst for oxygen evolution reaction (OER).
Journal ArticleDOI
Hierarchically porous metal-free carbon with record high mass activity for oxygen reduction and Zn-air batteries
TL;DR: In this article, a β-cyclodextrin polymer network was designed to create a hierarchically porous structure with a very large electrochemically active surface area (ECSA) of 429 m2 g−1, which can also serve as a self-sponsored network-anchored heteroatom doping source leading to a high intrinsic activity of 8.14 × 10−3 mA cm−2.
Journal ArticleDOI
All-in-One Bifunctional Oxygen Electrode Films for Flexible Zn-Air Batteries
Sha Zeng,Sha Zeng,Xiao Tong,Susheng Zhou,Bo Lv,Bo Lv,Jian Qiao,Yanhui Song,Minghai Chen,Minghai Chen,Jiangtao Di,Jiangtao Di,Qingwen Li,Qingwen Li +13 more
TL;DR: The proposed concept of constructing scalable, all-in-one, freestanding, and flexible air electrodes would pave the way to develop next-generation wearable and portable energy-storage devices.
Journal ArticleDOI
Porous Fe-Nx/C hybrid derived from bi-metal organic frameworks as high efficient electrocatalyst for oxygen reduction reaction
Yijin Wu,Shenlong Zhao,Kun Zhao,Tengxiu Tu,Jianzhong Zheng,Jie Chen,Haifeng Zhou,Dejian Chen,Shunxing Li +8 more
TL;DR: In this paper, a simple, low-cost and large-scale synthesis method for the carbonized porous cubes (CPCs) containing Fe and N co-doped porous carbon hybrid (Fe-Nx/C) with controlled-morphology, uniform elemental distribution and well-defined pore size is developed by pyrolyzing bimetallic FeIII-modified IRMOF-3 cubes in Argon atmosphere at 800°C.
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).