scholarly journals Co-doped carbon materials synthesized with polymeric precursors as bifunctional electrocatalysts

RSC Advances ◽  
2020 ◽  
Vol 10 (59) ◽  
pp. 35966-35978
Author(s):  
Imran Karajagi ◽  
K. Ramya ◽  
P. C. Ghosh ◽  
A. Sarkar ◽  
N. Rajalakshmi
Keyword(s):  
Carbon Materials ◽  
Bifunctional Catalysts ◽  
Cyclic Stability ◽  
Polymeric Precursors ◽  
Metal Free ◽  
Bifunctional Electrocatalysts ◽  
Co Doped

Metal free bifunctional catalysts based on co-doped carbon materials synthesized from polymeric precursors via a simple pyrolysis route with high cyclic stability and low polarization for Zn–air batteries.

Metal-free ovalbumin-derived N-S-co-doped nanoporous carbon materials as efficient electrocatalysts for oxygen reduction reaction

2019 ◽  
Vol 467-468 ◽  
pp. 75-83 ◽  
Author(s):  
André L. Cazetta ◽  
Lucas Spessato ◽  
Karen C. Bedin ◽  
Isis P.F.A. Souza ◽  
Rafael A. Araújo ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Materials ◽  
Nanoporous Carbon ◽  
Reduction Reaction ◽  
Metal Free ◽  
Nanoporous Carbon Materials ◽  
Co Doped

N,S co-doped hierarchically porous carbon materials for efficient metal-free catalysis

2020 ◽  
Vol 22 (3) ◽  
pp. 742-752 ◽  
Author(s):  
Xiwei Hu ◽  
Xun Sun ◽  
Qiang Song ◽  
Yangyang Zhu ◽  
Yu Long ◽  
...  
Keyword(s):  
Porous Structure ◽  
Porous Carbon ◽  
Carbon Materials ◽  
Cost Effective ◽  
Hierarchically Porous ◽  
Metal Free ◽  
Porous Carbon Materials ◽  
Hierarchically Porous Structure ◽  
Co Doped

Polymer-derived N,S co-doped carbon materials (PDNSC-X) with a hierarchically porous structure were facilely prepared by a cost-effective and convenient strategy and were subsequently used as efficient metal-free catalysts.

scholarly journals 2D quasi-ordered nitrogen and sulfur co-doped carbon materials from ionic liquid as metal-free electrocatalysts for ORR

RSC Advances ◽  
2017 ◽  
Vol 7 (29) ◽  
pp. 17941-17949 ◽  
Author(s):  
Bao-Bing Huang ◽  
Zhi-Yong Luo ◽  
Jun-Jun Zhang ◽  
Zai-Lai Xie
Keyword(s):  
Ionic Liquid ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Performance ◽  
Carbon Materials ◽  
Reduction Reaction ◽  
The Novel ◽  
Metal Free ◽  
Co Doped

This study explores the novel 2D heteroatom-doped carbon materials for high performance oxygen reduction reaction (ORR).

Recent advances in precious metal-free bifunctional catalysts for electrochemical conversion systems

2019 ◽  
Vol 7 (14) ◽  
pp. 8006-8029 ◽  
Author(s):  
Huimin Xu ◽  
Suqin Ci ◽  
Yichun Ding ◽  
Genxiang Wang ◽  
Zhenhai Wen
Keyword(s):  
Free Energy ◽  
Precious Metal ◽  
Fossil Fuels ◽  
Recent Progress ◽  
Bifunctional Catalysts ◽  
Metal Free ◽  
Electrochemical Conversion ◽  
Recent Advances ◽  
Bifunctional Electrocatalysts

The gradually “depleting” fossil fuels calls for development sustainable and pollution free energy, this work summarize the recent progress in exploring bifunctional electrocatalysts toward several potential electrochemical conversion devices.

Interactions between Dopants in Dual-Doped Graphene Nanoribbons as Metal-Free Bifunctional Catalysts for Fuel Cell and Metal-Air Batteries

MRS Advances ◽  
2016 ◽  
Vol 1 (6) ◽  
pp. 421-425 ◽  
Author(s):  
Zhenghang Zhao ◽  
Zhenhai Xia
Keyword(s):  
Noble Metals ◽  
High Efficiency ◽  
Graphene Nanoribbons ◽  
Low Cost ◽  
Reduction Reaction ◽  
Bifunctional Catalysts ◽  
Carbon Nanomaterial ◽  
Metal Free ◽  
Doped Graphene ◽  
Co Doped

ABSTRACTDuel p-block element doped carbon nanomaterial is a new kind of metal-free bifunctional catalysts for fuel cells and metal-air batteries because of their low-cost and high efficiency compared to traditional noble metals and their alloys. To optimize co-doped catalysts, we studied the interactions of dopants on the doped graphene and their effect on oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). It is found that the interactions between N and X (P, B, S) occur within a distance of ∼0.5 nm, and beyond the distance their interactions are limited while the interactions between N and Cl take places beyond the distance of ∼0.5 nm.

N and S Co-doped Ordered Mesoporous Carbon: An Efficient Electrocatalyst for Oxygen Reduction Reaction in Microbial Fuel Cells

2020 ◽  
Vol 16 (4) ◽  
pp. 625-638
Author(s):  
Leila Samiee ◽  
Sedigheh Sadegh Hassani
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Microbial Fuel Cells ◽  
Carbon Materials ◽  
Reduction Reaction ◽  
Carbon Substrate ◽  
Promising Candidate ◽  
X Ray ◽  
Carbon Framework ◽  
Co Doped

Background: Porous carbon materials are promising candidate supports for various applications. In a number of these applications, doping of the carbon framework with heteroatoms provides a facile route to readily tune the carbon properties. The oxygen reduction reaction (ORR), where the reaction can be catalyzed without precious metals is one of the common applications for the heteroatom-doped carbons. Therefore, heteroatom doped catalysts might have a promising potential as a cathode in Microbial fuel cells (MFCs). MFCs have a good potential to produce electricity from biological oxidization of wastes at the anode and chemical reduction at the cathode. To the best of our knowledge, no studies have been yet reported on utilizing Sulfur trioxide pyridine (STP) and CMK-3 for the preparation of (N and S) doped ordered porous carbon materials. The presence of highly ordered mesostructured and the synergistic effect of N and S atoms with specific structures enhance the oxygen adsorption due to improving the electrocatalytic activity. So the optimal catalyst, with significant stability and excellent tolerance of methanol crossover can be a promising candidate for even other storage and conversion devices. Methods: The physico-chemical properties of the prepared samples were determined by Small Angle X-ray Diffraction (SAXRD), N2 sorption-desorption, Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy (FESEM) and X-ray Photoelectron Spectroscopy (XPS). The prepared samples were further applied for oxygen reduction reaction (ORR) and the optimal cathode was tested with the Microbial Fuel Cell (MFC) system. Furthermore, according to structural analysis, The HRTEM, and SAXRD results confirmed the formation of well-ordered hexagonal (p6mm) arrays of mesopores in the direction of (100). The EDS and XPS approved that N and S were successfully doped into the CMK-3 carbon framework. Results: Among all the studied CMK-3 based catalysts, the catalyst prepared by STP precursor and pyrolysis at 900°C exhibited the highest ORR activity with the onset potential of 1.02 V vs. RHE and 4 electron transfer number per oxygen molecule in 0.1 M KOH. The high catalyst durability and fuel-crossover tolerance led to stable performance of the optimal cathode after 5000 s operation, while the Pt/C cathode-based was considerably degraded. Finally, the MFC system with the optimal cathode displayed 43.9 mW·m-2 peak power density showing even reasonable performance in comparison to a Pt/C 20 wt.%.cathode. Conclusions: The results revealed that the synergistic effect of nitrogen and sulfur co-doped on the carbon substrate structure leads to improvement in catalytic activity. Also, it was clearly observed that the porous structure and order level of the carbon substrate could considerably change the ORR performance.

Ion-biosorption induced core–shell Fe2P@carbon nanoparticles decorated on N, P co-doped carbon materials for the oxygen evolution reaction

2021 ◽  
Author(s):  
Min Jiang ◽  
Wei Fan ◽  
Anquan Zhu ◽  
Pengfei Tan ◽  
Jianping Xie ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Carbon Nanoparticles ◽  
Carbon Materials ◽  
Cost Effective ◽  
Core Shell ◽  
Co Doped

This work employs bacteria as precursors and induces a cost-effective biosorption strategy to obtain Fe2P@carbon nanoparticles decorated on N and P co-doped carbon (Fe2P@CNPs/NPC) materials.

Nitrogen and phosphorus co-doped ultrathin carbon nanosheets as superior cathode catalysts of Zn-air battery.

2021 ◽  
Author(s):  
Aling Chen ◽  
Qingfeng Yi ◽  
Kuang Sheng ◽  
Yuebing Wang ◽  
Jiangchuan Chen ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Oxygen Reduction Reaction ◽  
Reduction Reaction ◽  
Nitrogen And Phosphorus ◽  
Carbon Nanosheets ◽  
Cathode Catalysts ◽  
Metal Free ◽  
Air Battery ◽  
Storage Technologies ◽  
Co Doped

Exploring efficient metal-free electrocatalyst for oxygen reduction reaction (ORR) plays a significant role in a variety of storage technologies and renewable energy conversion. In this work, we firstly compounded a...

scholarly journals Three-dimensional tellurium and nitrogen Co-doped mesoporous carbons for high performance supercapacitors

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8628-8635
Author(s):  
Chang Ki Kim ◽  
Jung-Min Ji ◽  
M. Aftabuzzaman ◽  
Hwan Kyu Kim
Keyword(s):  
High Performance ◽  
Carbon Materials ◽  
Synergetic Effect ◽  
Three Dimensional ◽  
Mesoporous Carbons ◽  
Capacitive Performance ◽  
Nitrogen Doped ◽  
Carbon Based Nanomaterials ◽  
Nitrogen Doped Carbon ◽  
Co Doped

The incorporation of the Te element into nitrogen-doped carbon-based nanomaterials is a good strategy to improve the capacitive performance of carbon materials and the incorporation of two types of atoms improves the overall capacitive performance of the materials due to a synergetic effect.

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