scholarly journals Harnessing inherently hierarchical microstructures of plant biomass to construct three-dimensional nanoporous nitrogen-doped carbons as efficient and durable oxygen reduction electrocatalysts

RSC Advances ◽  
2019 ◽  
Vol 9 (69) ◽  
pp. 40326-40335 ◽  
Author(s):  
Hongqu Tang ◽  
Shilin Wei ◽  
Chuangchuang Yang ◽  
Peiyao Bai ◽  
Jiawei Qi ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction ◽  
Plant Biomass ◽  
Three Dimensional ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Nitrogen Doped Carbon ◽  
Carbon Based

Naturally hierarchical microstructures of E. tirucalli are utilized to prepare a nanoporous nitrogen-doped carbon-based metal-free ORR electrocatalyst that is superior to the benchmark Pt/C catalyst in catalytic activity and durability.

Co3Fe7 nanoparticles encapsulated in porous nitrogen-doped carbon nanofiber as bifunctional electrocatalysts for rechargeable zinc-air battery

2021 ◽  
Author(s):  
Miaomiao Liu ◽  
Yulong He ◽  
Jintao Zhang
Keyword(s):  
Oxygen Reduction ◽  
Active Sites ◽  
Carbon Nanofiber ◽  
Nitrogen Doped ◽  
Bifunctional Electrocatalysts ◽  
Air Battery ◽  
Nitrogen Doped Carbon ◽  
Carbon Based

Exploration of inexpensitive and high perfomance carbon-based electrocatalyst with abundant active sites for oxygen reduction and evolution reactions is vital for enhancing the performance of zinc air battery. Herein, the...

Engineering Mn Atomic Sites in Multi-Dimensional Nitrogen-Doped Carbon for Highly Efficient Oxygen Reduction Reaction

2022 ◽  
Author(s):  
Huixin Ma ◽  
Daijie Deng ◽  
Honghui Zhang ◽  
Feng Chen ◽  
Junchao Qian ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Single Atom ◽  
Two Dimensional ◽  
One Dimensional ◽  
Nitrogen Doped ◽  
Half Wave ◽  
Nitrogen Doped Carbon

Nitrogen-coordinated single-atom manganese in multi-dimensional nitrogen-doped carbon electrocatalysts (Mn-NC) was successful constructed by combing two-dimensional nanosheets and one-dimensional nanofibers. The Mn-NC exhibited excellent oxygen reduction reaction catalytic activity with half-wave...

Nitrogen-doped carbon sheets derived from chitin as non-metal bifunctional electrocatalysts for oxygen reduction and evolution

RSC Advances ◽  
2015 ◽  
Vol 5 (69) ◽  
pp. 56121-56129 ◽  
Author(s):  
Haoran Yuan ◽  
Lifang Deng ◽  
Xixi Cai ◽  
Shungui Zhou ◽  
Yong Chen ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Activated Carbon ◽  
Oxygen Reduction ◽  
High Catalytic Activity ◽  
Nitrogen Doped ◽  
Bifunctional Electrocatalysts ◽  
Nitrogen Doped Carbon

Nitrogen-doped activated carbon sheets were derived from chitin, which exhibited remarkable activity for ORR and high catalytic activity towards OER.

scholarly journals N8− Polynitrogen Stabilized on Nitrogen-Doped Carbon Nanotubes as an Efficient Electrocatalyst for Oxygen Reduction Reaction

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 864 ◽  
Author(s):  
Zhenhua Yao ◽  
Ruiyang Fan ◽  
Wangyang Ji ◽  
Tingxuan Yan ◽  
Maocong Hu
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Rotating Disk ◽  
Reduction Reaction ◽  
Rotating Disk Electrode ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Temperature Programmed ◽  
Nitrogen Doped Carbon

In this work, non-traditional metal-free polynitrogen chain N8− deposited on a nitrogen-doped carbon nanotubes (PN-NCNT) catalyst was successfully synthesized by a facile cyclic voltammetry (CV) approach, which was further tested in an oxygen reduction reaction (ORR). The formation of PN on NCNT was confirmed by attenuated total reflectance–Fourier transform infrared spectroscopy (ATR-FTIR) and Raman spectroscopy. Partial positive charge of carbon within NCNT facilitated electron transfer and accordingly induced the formation of more PN species compared to CNT substrate as determined by temperature-programmed decomposition (TPD). Rotating disk electrode (RDE) measurements suggested that a higher current density was achieved over PN-NCNT than that on PN-CNT catalyst, which can be attributed to formation of the larger amount of N8− on NCNT. Kinetic study suggested a four-electron pathway mechanism over PN-NCNT. Moreover, it showed long stability and good methanol tolerance, which indicates its great potential application. This work provides insights on designing and synthesizing non-traditional metal-free catalysts for ORR in fuel cells.

scholarly journals Carbonisation temperature dependence of electrochemical activity of nitrogen-doped carbon fibres from electrospinning as air-cathodes for aqueous-alkaline metal–air batteries

RSC Advances ◽  
2019 ◽  
Vol 9 (47) ◽  
pp. 27231-27241
Author(s):  
Markus Gehring ◽  
Hermann Tempel ◽  
Alexandre Merlen ◽  
Roland Schierholz ◽  
Rüdiger-A. Eichel ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction Reaction ◽  
Temperature Dependence ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Carbon Fibres ◽  
Alkaline Metal ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Poly Acrylonitrile

Nitrogen-doped carbon fibres derived from electrospun poly-acrylonitrile display an optimum catalytic activity towards the oxygen reduction reaction in aqueous-alkaline metal–air batteries, when carbonised under argon at 850 °C.

Enhancement mechanism of sulfur dopants on the catalytic activity of N and P co-doped three-dimensional hierarchically porous carbon as a metal-free oxygen reduction electrocatalyst

2019 ◽  
Vol 9 (21) ◽  
pp. 5906-5914 ◽  
Author(s):  
Yongxi Zan ◽  
Zhengping Zhang ◽  
Meiling Dou ◽  
Feng Wang
Keyword(s):  
Catalytic Activity ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Three Dimensional ◽  
Nitrogen And Phosphorus ◽  
Free Oxygen ◽  
Hierarchically Porous ◽  
Metal Free ◽  
Enhancement Mechanism ◽  
Co Doped

A sulfur, nitrogen and phosphorus ternary-doped cattle-bone-derived hierarchically porous carbon metal-free electrocatalyst was synthesized, exhibiting superior oxygen reduction performance compared to Pt/C.

scholarly journals Electrochemical estimation of active site density on a metal-free carbon-based catalyst

RSC Advances ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 466-475 ◽  
Author(s):  
Arup Chakraborty ◽  
Bapi Bera ◽  
Divya Priyadarshani ◽  
Pradipkumar Leuaa ◽  
Debittree Choudhury ◽  
...  
Keyword(s):  
Active Site ◽  
Free Carbon ◽  
Adsorption Method ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Site Density ◽  
Nitrogen Doped Carbon ◽  
Carbon Based

Estimated ESA of nitrogen-doped carbon and carbon using AQS-adsorption method.

Nitrogen-doped carbon-based dots prepared by dehydrating EDTA with hot sulfuric acid and their electrocatalysis for oxygen reduction reaction

RSC Advances ◽  
2014 ◽  
Vol 4 (62) ◽  
pp. 32791-32795 ◽  
Author(s):  
Yongqiang Dong ◽  
Hongchang Pang ◽  
Hongbin Yang ◽  
Jian Jiang ◽  
Yuwu Chi ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Ethylenediaminetetraacetic Acid ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon ◽  
Carbon Based

Nitrogen doped carbon-based dots were synthesized by dehydrating ethylenediaminetetraacetic acid, and were used for electro-catalyzing oxygen reduction.

Sign in / Sign up

Export Citation Format

Share Document