Nonporous MOF-derived dopant-free mesoporous carbon as an efficient metal-free electrocatalyst for the oxygen reduction reaction

2016 ◽  
Vol 4 (24) ◽  
pp. 9370-9374 ◽  
Author(s):  
Xin Wang ◽  
Xingyue Li ◽  
Canbin Ouyang ◽  
Zhen Li ◽  
Shuo Dou ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Specific Surface ◽  
Oxygen Reduction ◽  
Mesoporous Carbon ◽  
Mesoporous Structure ◽  
Reduction Reaction ◽  
High Specific Surface Area ◽  
Metal Free ◽  
Electrocatalytic Oxygen Reduction ◽  
Orr Activity

Dopant-/metal-free mesoporous carbon has been prepared from nonporous MOFs, which is highly efficient for the electrocatalytic oxygen reduction reaction (ORR). The excellent ORR activity is attributed to both high specific surface area and mesoporous structure.

Hollow mesoporous carbon nanocages with Fe isolated single atomic site derived from MOF/polymer for highly efficient electrocatalytic oxygen reduction

2021 ◽  
Author(s):  
Kai Zhang ◽  
Bai Yang ◽  
Congcong Wang ◽  
Yixin Chen ◽  
Ying Liu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Energy Conversion ◽  
Oxygen Reduction ◽  
Mesoporous Carbon ◽  
Reduction Reaction ◽  
Atomic Site ◽  
Highly Efficient ◽  
Electrocatalytic Oxygen Reduction ◽  
Conversion Technologies

Exploring sustainable and highly activity electrocatalysts for the oxygen reduction reaction (ORR) is vital for the development and application of energy conversion technologies. Here, we prepared Fe isolated-single atomic-site (ISAs)...

The direct growth of highly dispersed CoO nanoparticles on mesoporous carbon as a high-performance electrocatalyst for the oxygen reduction reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 70763-70769 ◽  
Author(s):  
Pengxi Li ◽  
Ruguang Ma ◽  
Yao Zhou ◽  
Yongfang Chen ◽  
Qian Liu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Mesoporous Carbon ◽  
High Performance ◽  
Reduction Reaction ◽  
Electrocatalytic Oxygen Reduction ◽  
Excellent Activity ◽  
Highly Dispersed ◽  
Direct Growth ◽  
Coo Nanoparticles

Highly dispersed CoO nanoparticles on mesoporous carbon show the excellent activity and stability toward the electrocatalytic oxygen reduction reaction with a four-electron reaction path, compared to commercial Pt/C.

Glancing Angle Deposited Platinum Nanorod Arrays for Oxygen Reduction Reaction

2011 ◽  
Vol 1311 ◽  
Author(s):  
Wisam J. Khudhayer ◽  
Nancy Kariuki ◽  
Deborah Myers ◽  
Ali Shaikh ◽  
Tansel Karabacak
Keyword(s):  
Oxygen Reduction Reaction ◽  
Single Crystal ◽  
Oxygen Reduction ◽  
Surface Area ◽  
Reduction Reaction ◽  
Active Surface Area ◽  
Nanorod Arrays ◽  
Electrocatalytic Oxygen Reduction ◽  
Glancing Angle ◽  
Orr Activity

ABSTRACTIn this work, we investigated the electrocatalytic oxygen reduction reaction (ORR) activity of vertically aligned, single-layer, carbon-free, and single crystal Pt nanorod arrays utilizing cyclic voltammetry (CV) and rotating-disk electrode (RDE) techniques. A glancing angle deposition (GLAD) technique was used to fabricate 200 nm long Pt nanorods, which corresponds to Pt loading of 0.16 mg/cm2, on glassy carbon (GC) electrode at a glancing angle of 85° as measured from the substrate normal. An electrode comprised of conventional carbon-supported Pt nanoparticles (Pt/C) was also prepared for comparison with the electrocatalytic ORR activity and stability of Pt nanorods. CV results showed that the Pt nanorod electrocatalyst exhibits a more positive oxide reduction peak potential compared to Pt/C, indicating that GLAD Pt nanorods are less oxophilic. In addition, a series of CV cycles in acidic electrolyte revealed that Pt nanorods are significantly more stable against electrochemically-active surface area loss than Pt/C. Moreover, room temperature RDE results demonstrated that GLAD Pt nanorods exhibit higher area-specific ORR activity than Pt/C. The enhanced electrocatalytic ORR activity of Pt nanorods is attributed to their larger crystallite size, single-crystal property, and the dominance of (110) crystal planes on the large surface area nanorods sidewalls, which has been found to be the most active plane for ORR. However, the Pt nanorods showed lower mass specific activity than the Pt/C electrocatalyst due to the large diameter of the Pt nanorods.

2D Layered non-precious metal mesoporous electrocatalysts for enhanced oxygen reduction reaction

2017 ◽  
Vol 5 (10) ◽  
pp. 4868-4878 ◽  
Author(s):  
Lili Huo ◽  
Baocang Liu ◽  
Geng Zhang ◽  
Rui Si ◽  
Jian Liu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Specific Surface ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Precious Metal ◽  
Reduction Reaction ◽  
High Specific Surface Area ◽  
Alkaline Media ◽  
Homogeneous Distribution ◽  
Acidic And Alkaline Media

2D Layered meso-M/N-C/N-G nanocomposites with high specific surface area, homogeneous distribution of ultra-small M-N-C nanoparticles less than 5 nm, and mesopores with a size of ∼3.6 nm exhibit excellent electrocatalytic activity toward oxygen reduction reaction (ORR) in acidic and alkaline media.

Sign in / Sign up

Export Citation Format

Share Document