Electrocatalytic Activity of Novel Ball-Type Metallophthalocyanines with Trifluoro Methyl Linkages in Oxygen Reduction Reaction and Application as Zn-Air Battery Cathode Catalyst

2017 ◽  
Vol 233 ◽  
pp. 237-248 ◽  
Author(s):  
Nilüfer Koçyiğit ◽  
Ümit Ergin Özen ◽  
Metin Özer ◽  
Bekir Salih ◽  
Ali Rıza Özkaya ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Cathode Catalyst ◽  
Air Battery

scholarly journals Effect of Co3O4 Nanoparticles on Improving Catalytic Behavior of Pd/Co3O4@MWCNT Composites for Cathodes in Direct Urea Fuel Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1017
Author(s):  
Nguyen-Huu-Hung Tuyen ◽  
Hyun-Gil Kim ◽  
Young-Soo Yoon
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Hydrothermal Process ◽  
Pd Nanoparticles ◽  
Reduction Reaction ◽  
Co3o4 Nanoparticles ◽  
Cathode Catalyst ◽  
Multi Walled Carbon Nanotubes

Direct urea fuel cells (DUFCs) have recently drawn increased attention as sustainable power generation devices because of their considerable advantages. Nonetheless, the kinetics of the oxidation-reduction reaction, particularly the electrochemical oxidation and oxygen reduction reaction (ORR), in direct urea fuel cells are slow and hence considered to be inefficient. To overcome these disadvantages in DUFCs, Pd nanoparticles loaded onto Co3O4 supported by multi-walled carbon nanotubes (Pd/Co3O4@MWCNT) were employed as a promising cathode catalyst for enhancing the electrocatalytic activity and oxygen reduction reaction at the cathode in DUFCs. Co3O4@MWCNT and Pd/Co3O4@MWCNT were synthesized via a facile two-step hydrothermal process. A Pd/MWCNT catalyst was also prepared and evaluated to study the effect of Co3O4 on the performance of the Pd/Co3O4@MWCNT catalyst. A current density of 13.963 mA cm−2 and a maximum power density of 2.792 mW cm−2 at 20 °C were obtained. Pd/Co3O4@MWCNT is a prospectively effective cathode catalyst for DUFCs. The dilution of Pd with non-precious metal oxides in adequate amounts is economically conducive to highly practical catalysts with promising electrocatalytic activity in fuel cell applications.

Electrocatalytic activity of silver decorated ceria microspheres for the oxygen reduction reaction and their application in aluminium–air batteries

2017 ◽  
Vol 53 (56) ◽  
pp. 7921-7924 ◽  
Author(s):  
Shanshan Sun ◽  
Yejian Xue ◽  
Qin Wang ◽  
Shihua Li ◽  
Heran Huang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Silver Nanoparticle ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Excellent Performance ◽  
Air Battery

A catalyst of silver nanoparticle decorated CeO2 microspheres was first reported for ORR and applied in an aluminum–air battery with excellent performance.

Vulcan XC-72 treated by nitric acid and its electrocatalytic activity for oxygen reduction reaction

2019 ◽  
Vol 12 (02) ◽  
pp. 1950017
Author(s):  
Zejie Zhang ◽  
Debi Zhou ◽  
Xinjun Bao ◽  
Zhao Zhang ◽  
Boyun Huang
Keyword(s):  
Nitric Acid ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Current Density ◽  
Electrocatalytic Activity ◽  
High Current Density ◽  
Reduction Reaction ◽  
Discharge Voltage ◽  
Carbon Catalyst ◽  
Air Battery

Vulcan XC-72 treated by nitric acid is employed as an oxygen reduction reaction (ORR) catalyst. The carbon catalyst exhibits higher electrocatalytic activity and stability in 6[Formula: see text]mol[Formula: see text]L[Formula: see text] KOH electrolyte. The current density for oxygen reduction is 45[Formula: see text]mA[Formula: see text]cm[Formula: see text] at [Formula: see text][Formula: see text]V (vs. HgO/Hg). A zinc–air battery using XC-72 carbon electrode was assembled, the discharge voltage could reach up to 0.6[Formula: see text]V under a high current density of 80[Formula: see text]mA[Formula: see text]cm[Formula: see text].

Tailoring molecular architectures of Fe phthalocyanine on nanocarbon supports for high oxygen reduction performance

2015 ◽  
Vol 3 (18) ◽  
pp. 10013-10019 ◽  
Author(s):  
Shiming Zhang ◽  
Heyou Zhang ◽  
Xing Hua ◽  
Shengli Chen
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Alkaline Solution ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
High Oxygen ◽  
Molecular Architectures

Tailored molecular architectures of FePc on nanocarbon supports from nanorods to uniform shells exhibit excellent electrocatalytic activity for the oxygen reduction reaction in alkaline solution.

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