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
Strong interfacial coupling of MoS2/g-C3N4 van de Waals solids for highly active water reduction
Wei Fu,Haiyong He,Zhuhua Zhang,Zhuhua Zhang,Chunyang Wu,Xuewen Wang,Hong Wang,Qingsheng Zeng,Linfeng Sun,Xingli Wang,Jiadong Zhou,Qundong Fu,Peng Yu,Zexiang Shen,Chuanhong Jin,Boris I. Yakobson,Zheng Liu +16 more
TL;DR: In this article, the authors reported the synthesis of ultrathin molybdenum disulfide/g-carbon nitride (MoS 2 / g -C 3 N 4 ) vdW layers via an in situ interfacial engineering method.
Journal ArticleDOI
Nitrogen and sulfur co-doped porous carbon derived from bio-waste as a promising electrocatalyst for zinc-air battery
TL;DR: In this paper, N, S-codoped porous carbon materials are successfully prepared via the self-activation pyrolysis of garlic stems, and exhibit promising ORR activities and improved Zn-air batteries performances.
Journal ArticleDOI
Bifunctional Oxygen Electrocatalysis of N, S-Codoped Porous Carbon with Interspersed Hollow CoO Nanoparticles for Rechargeable Zn-Air Batteries.
TL;DR: A high-efficiency one-pot method is developed to synthesize porous carbon with N, S doping and embedded hollow cobalt oxide nanoparticles, rendering the assembly of high-performance Zn-air battery in an aqueous electrolyte with a specific capacity of 745 mA h gZn-1 and good cycling stability for over 100 h.
Journal ArticleDOI
Well-defined gradient Fe/Zn bimetal organic framework cylinders derived highly efficient iron- and nitrogen- codoped hierarchically porous carbon electrocatalysts towards oxygen reduction
TL;DR: In this article, a new class of bimetallic zeolitic imidazolite (Fe,Zn-ZIF) materials with a cylindrical morphology and a well-defined Fe/Zn composition gradient was synthesized.
Journal ArticleDOI
2020 Roadmap on two-dimensional nanomaterials for environmental catalysis
Yulu Yang,Mingguang Wu,Xingwang Zhu,Hui Xu,Si Ma,Yongfeng Zhi,Hong Xia,Xiaoming Liu,Jun Pan,Jie Yinn Tang,Siang-Piao Chai,Leonardo Palmisano,Francesco Parrino,Junli Liu,Jianzhong Ma,Ze Lin Wang,Ling Tan,Yufei Zhao,Yu-Fei Song,Pardeep Singh,Pankaj Raizada,Deli Jiang,Di Li,R.A. Geioushy,Jizhen Ma,Jintao Zhang,Song Hu,Rongjuan Feng,Gang Liu,Minghua Liu,Minghua Liu,Zhenhua Li,Mingfei Shao,Neng Li,Jiahe Peng,Wee-Jun Ong,Nikolay Kornienko,Zhenyu Xing,Xiujun Fan,Jianmin Ma,Jianmin Ma +40 more
TL;DR: In this paper, a roadmap on two-dimensional nanomaterials for environmental catalysis is presented. And the roadmap can give the useful guidance to researchers in future researches, and provide the research directions.
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).