A 3D porous nitrogen-doped carbon-nanofiber-supported palladium composite as an efficient catalytic cathode for lithium–oxygen batteries

2017 ◽  
Vol 5 (4) ◽  
pp. 1462-1471 ◽  
Author(s):  
Jun Wang ◽  
Lili Liu ◽  
Shulei Chou ◽  
Huakun Liu ◽  
Jiazhao Wang
Keyword(s):  
Carbon Nanofiber ◽  
Synergistic Effects ◽  
Carbon Matrix ◽  
Bifunctional Catalyst ◽  
Full Potential ◽  
High Porosity ◽  
Supported Palladium ◽  
Nitrogen Doped Carbon ◽  
Lithium Oxygen Batteries ◽  
Supported Pd

A 3D porous N-doped carbon-nanofiber-supported Pd composite gives synergistic effects on electrocatalytic performance improvement. The carbon matrix with high porosity and conductivity could reach full potential of Pd particles as an excellent bifunctional catalyst cathode.

scholarly journals Integrated Three-Dimensional Carbon Nanopolyhedron/Metal Sulfides: An Efficient Electrocatalyst Toward Oxygen Reduction Reaction

2021 ◽  
Vol 9 ◽  
Author(s):  
Yi-Wen Yang ◽  
Bing-Ye Song
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Synergistic Effects ◽  
Three Dimensional ◽  
Carbon Matrix ◽  
Structural Features ◽  
Reduction Reaction ◽  
Alkaline Media ◽  
Metal Sulfides ◽  
High Porosity

Carbon-based materials hybridized with metal sulfides have gained growing attention as catalytic materials for oxygen reduction reaction (ORR) due to their synergistic effects in terms of richer structural features and higher electrochemical activities. Here, a series of Zn/Co/Fe-based metal-organic frameworks (MOFs) as the precursors, which can be adopted as efficient ORR catalysts, were synthesized through a sulfuration–calcination treatment. The effects of precursor composition, heteroatom doping, and pyrolysis temperature on the structure and electrochemical performance of the catalysts were discussed in detail. It is found that well-grown carbon nanotubes (CNTs) on the surface of graphitic carbon matrix are formed under the synergy effect of trimetallic-based species during pyrolysis. Benefiting from the three-dimensional unique structure with appropriate dopants and high porosity, the catalyst derived from the optimized Zn/Co/Fe-MOFs achieves a half-wave potential of 0.87 V in an alkaline medium for ORR, which is comparable with commercial electrocatalysts. In addition, an outstanding ORR durability of the proposed catalyst in alkaline media was also demonstrated. This work highlights the potential to rationally design and fabricate high-performance ORR catalysts for commercialization.

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...

Well-dispersed molybdenum nitrides on a nitrogen-doped carbon matrix for highly efficient hydrogen evolution in alkaline media

2017 ◽  
Vol 5 (39) ◽  
pp. 20932-20937 ◽  
Author(s):  
Zhe Lv ◽  
Muhammad Tahir ◽  
Xuewei Lang ◽  
Gang Yuan ◽  
Lun Pan ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Matrix ◽  
Alkaline Media ◽  
Alkaline Electrolyte ◽  
Nitrogen Doped ◽  
Highly Efficient ◽  
Molybdenum Nitrides ◽  
Nitrogen Doped Carbon

A strategy is designed to fabricate well-dispersed Mo2N nanoparticles on nitrogen-doped carbon as a new and effective electrocatalyst for hydrogen evolution in alkaline electrolyte.

Sign in / Sign up

Export Citation Format

Share Document