scholarly journals Synergistic influence of mesoporous spinel nickel ferrite on the electrocatalytic activity of nano-structured palladium

RSC Advances ◽  
2021 ◽  
Vol 11 (20) ◽  
pp. 11813-11820
Author(s):  
Fariba Kaedi ◽  
Zahra Yavari ◽  
Ahmad Reza Abbasian ◽  
Milad Asmaei ◽  
Kagan Kerman ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Surface Area ◽  
Electrocatalytic Activity ◽  
Nickel Ferrite ◽  
Critical Factors

Structure and surface area are critical factors for catalysts in fuel cells.

Geometric pore surface area and fractal dimension of catalyzed electrodes in polymer electrolyte membrane fuel cells

2018 ◽  
Vol 43 (7) ◽  
pp. 3011-3019 ◽  
Author(s):  
Jian Zhao ◽  
Samaneh Shahgaldi ◽  
Adnan Ozden ◽  
Ibrahim E. Alaefour ◽  
Xianguo Li ◽  
...  
Keyword(s):  
Fractal Dimension ◽  
Fuel Cells ◽  
Polymer Electrolyte ◽  
Surface Area ◽  
Polymer Electrolyte Membrane ◽  
Pore Surface ◽  
Electrolyte Membrane ◽  
Pore Surface Area

scholarly journals A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells

2017 ◽  
Vol 10 (4) ◽  
pp. 964-971 ◽  
Author(s):  
Yu Chen ◽  
Yan Chen ◽  
Dong Ding ◽  
Yong Ding ◽  
YongMan Choi ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide Fuel Cell ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Hybrid Catalyst ◽  
Fuel Cell Cathode

A hybrid catalyst coating dramatically enhances the electrocatalytic activity and durability of a solid oxide fuel cell cathode.

scholarly journals Highly Mesoporous Carbon Aerogel as Catalyst Support in Proton Exchange Membrane Fuel Cells

2019 ◽  
Author(s):  
Kevin Gu ◽  
Eric J. Kim ◽  
Sunil K. Sharma ◽  
Keyword(s):  
Fuel Cells ◽  
Activated Carbon ◽  
Specific Surface ◽  
Surface Area ◽  
Mesoporous Carbon ◽  
Proton Exchange Membrane ◽  
Catalyst Support ◽  
Carbon Aerogel ◽  
Proton Exchange ◽  
Exchange Membrane

<p>Carbon aerogel possesses unique structural and electrical properties, such as high mesopore volume, specific surface area, and electrical conductivity, which make it suitable for use as a catalyst support in Proton Exchange Membrane Fuel Cells (PEMFC). In this study, we present a novel synthesis of highly mesoporous carbon aerogel via ambient-drying and investigate its application in PEMFCs. The structural effects of activation on carbon aerogel were also studied. The TEM, XRF, Non Localized Density Function Theory (NLDFT) and BJH analysis were carried out to observe the morphology and pore structure. Pt on carbon aerogel and activated carbon aerogel show efficient activity in both oxygen reduction and hydrogen oxidation reactions compared to Pt on Vulcan XC-72, with increases up to 715% and 195% in specific power density, respectively. The enhanced performance of carbon aerogel is attributed to its large specific surface area and high mesopore to micropore ratio. Accelerated stress tests show that carbon aerogel has comparable durability with Vulcan XC-72, while activated carbon aerogel is less durable than both materials. Thus, the mesoporous carbon aerogel provides an efficient, lower-cost alternative to existing microporous carbon material as a catalyst support in PEMFCs.</p><p></p>

Conductive polypyrrole hydrogels and carbon nanotubes composite as an anode for microbial fuel cells

RSC Advances ◽  
2015 ◽  
Vol 5 (63) ◽  
pp. 50968-50974 ◽  
Author(s):  
Xinhua Tang ◽  
Haoran Li ◽  
Zhuwei Du ◽  
Weida Wang ◽  
How Yong Ng
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Power Density ◽  
Electrocatalytic Activity ◽  
Microbial Fuel Cells ◽  
Conductive Polypyrrole

Polypyrrole hydrogels/carbon nanotubes enhanced electrocatalytic activity, biocompatibility and power density in microbial fuel cells.

In situ determination of the electrochemically active platinum surface area: key to improvement of solid acid fuel cells

2018 ◽  
Vol 6 (6) ◽  
pp. 2700-2707 ◽  
Author(s):  
Felix P. Lohmann-Richters ◽  
Bernd Abel ◽  
Áron Varga
Keyword(s):  
Fuel Cells ◽  
Solid Electrolyte ◽  
Surface Area ◽  
Solid Acid ◽  
Oxide Reduction ◽  
Electrolyte System ◽  
Platinum Surface ◽  
Electrochemically Active

Surface oxide reduction is demonstrated for measuring the active Pt surface area in a solid electrolyte system at 240 °C.

Ultrasound-assisted synthesis of Pt–Co/C bimetallic alloys for oxygen reduction in PEM fuel cells

2018 ◽  
Vol 2 (7) ◽  
pp. 1491-1499 ◽  
Author(s):  
Rajesh Kumar Polagani ◽  
Prashant L. Suryawanshi ◽  
Sarang P. Gumfekar ◽  
Shirish H. Sonawane ◽  
Muthupandian Ashokkumar
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Pem Fuel Cells ◽  
Bimetallic Alloys ◽  
Polarization Study ◽  
Ultrasound Assisted

The polarization study revealed the information on the electrocatalytic activity of Pt–Co/C cathodes in PEMFCs.

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