High Pt loading on functionalized multiwall carbon nanotubes as a highly efficient cathode electrocatalyst for proton exchange membrane fuel cells

2011 ◽  
Vol 21 (22) ◽  
pp. 8066 ◽  
Author(s):  
Baizeng Fang ◽  
Min-Sik Kim ◽  
Jung Ho Kim ◽  
Min Young Song ◽  
Yan-Jie Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Multiwall Carbon Nanotubes ◽  
Proton Exchange ◽  
Highly Efficient ◽  
Exchange Membrane ◽  
Multiwall Carbon ◽  
Functionalized Multiwall Carbon Nanotubes

Platinum nanoparticles with superacid-doped polyvinylpyrrolidone coated carbon nanotubes: electrocatalyst for oxygen reduction reaction in high-temperature proton exchange membrane fuel cell

RSC Advances ◽  
2016 ◽  
Vol 6 (48) ◽  
pp. 41937-41946 ◽  
Author(s):  
S. Pourjafari Amyab ◽  
E. Saievar-Iranizad ◽  
A. Bayat
Keyword(s):  
Carbon Nanotubes ◽  
Catalytic Activity ◽  
Proton Exchange Membrane ◽  
Multiwall Carbon Nanotubes ◽  
Reduction Reaction ◽  
Proton Exchange ◽  
Exchange Membrane ◽  
Doped Polymer ◽  
Coated Carbon ◽  
Multiwall Carbon

In order to improve the catalytic activity and durability of proton-exchange-membrane-fuel-cells (PEMFCs), Nafion-free Pt-based catalyst using the superacid-doped polymer coated multiwall carbon nanotubes (MWCNTs) was investigated.

scholarly journals Mono-Dispersed Pt/MWNTs: Growing Directly on Multiwall Carbon Nanotubes (MWNTs) Using NaBH4 as Reducing Agent for Component of Proton Exchange Membrane Fuel Cell (PEMFC)

2019 ◽  
Vol 12 (1) ◽  
pp. 37
Author(s):  
Sudirman Sudirman ◽  
Wisnu Ari Adi ◽  
Emil Budianto ◽  
Deni Shidqi K. ◽  
Rike Yudianti
Keyword(s):  
Carbon Nanotubes ◽  
Ethylene Glycol ◽  
Proton Exchange Membrane ◽  
Sol Gel ◽  
Multiwall Carbon Nanotubes ◽  
Reducing Agent ◽  
Proton Exchange ◽  
Two Phases ◽  
Exchange Membrane ◽  
Multiwall Carbon

Synthesis of mono-dispersed Pt/MWCNTs has been performed. Platinum nanoparticles (Pt NPs) were grown directly on multiwall carbon nanotubes (MWCNTs) through sol-gel method using NaBH4 as reducing agent.       120 mg of activated MWCNT were weighed and then incorporated into the mixture (1) and sonicated for 2 hours to form the mixture (2). H2PtCl6 was weighed as much as 90 mg and dissolved into 45 mL of ethylene glycol until formed mixture (3). Solution (3) was dropwise every 3 seconds into the mixture (2). After that the mixture was distilled for 12 hours at a rate of 450 rpm. Subsequently the mixture was sonicated for 3 hours, then checked its pH, adjusting the desired pH to 4, 7, or 13 using the mixture 2M NaOH-ethylene glycol. The tests include SEM, EDS, XRD, and TEM for the morphologies and microstructures of the mono-dispersed Pt/MWCNT. The result of SEM observation and the analysis of the element using EDS found that the composite sample looked homogenous and contained element of C (MWCNT) and Pt (platinum). From the XRD shows that the composite Pt/MWCNT of the product synthesized without the reducing agent consists of three phases, namely C (MWCNTs), Pt (platinum), and H2PtH4, while the product synthesized using NaBH4 reducing agent consist of two phases, namely C (MWCNTs) and Pt (platinum ). The TEM image shows that the Pt NPs are spherical in size ~ 5 nm. Pt NPs appear to be attached on MWCNTs, either agglomerated or dispersed on the surface of MWCNTs. This paper will be compared between Pt/MWCNTs synthesis results with and without using NaBH4 reducing agent, as well as dispersed Pt NPs on MWCNTs.

Electrical and Mechanical Properties of Surface Functionalized Carbon Nanotubes Incorporated Graphite-Phenolic Composite Bipolar Plate for PEMFC

2016 ◽  
Vol 707 ◽  
pp. 23-27
Author(s):  
Pattarakamon Chaiwan ◽  
Thapanee Sarakonsri ◽  
Jantrawan Pumchusak
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Proton Exchange Membrane ◽  
Multiwall Carbon Nanotubes ◽  
Strong Acid ◽  
Bipolar Plate ◽  
Proton Exchange ◽  
Bipolar Plates ◽  
Exchange Membrane ◽  
Multiwall Carbon

This research aims to study the effect of the functionalization of the multiwall carbon nanotubes (MWCNTs) on the mechanical property improvement of phenolic composites for bipolar plate applications in proton exchange membrane fuel cells (PEMFC). The MWCNTs were oxidized by strong acid and silanized by silane coupling agent in order to enhance the interfacial adhesion between the MWCNTs and matrix and were used as reinforcement in the phenolic composites. The silanized MWCNTs was found to improve the mechanical properties of the composites; however, they caused the decrease of electrical conductivity due to the wrapping of the MWCNTs with non-conductive silane molecules. Nevertheless, the conductivity of more than 100 S/cm is maintained to meet the DOE requirement of materials for use as bipolar plates.

scholarly journals Pt-based nanoparticles on non-covalent functionalized carbon nanotubes as effective electrocatalysts for proton exchange membrane fuel cells

RSC Advances ◽  
2014 ◽  
Vol 4 (86) ◽  
pp. 46265-46284 ◽  
Author(s):  
Weiyong Yuan ◽  
Shanfu Lu ◽  
Yan Xiang ◽  
San Ping Jiang
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Functionalized Carbon Nanotubes ◽  
Exchange Membrane

This review presents the latest progress in the development of non-covalent functionalized CNT supported Pt-based electrocatalysts for fuel cells.

Noncovalent Functionalization of Single Walled Carbon Nanotubes Using Alternate Layer-By-Layer Polyelectrolyte Adsorption for Nanocomposite Fuel Cell Electrodes

2004 ◽  
Vol 837 ◽  
Author(s):  
R. B. Dhullipudi ◽  
T. A. Dobbins ◽  
S.R. Adiddela ◽  
Z. Zheng ◽  
R. A. Gunasekaran ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Proton Exchange Membrane ◽  
Single Walled Carbon Nanotubes ◽  
Pem Fuel Cells ◽  
Proton Exchange ◽  
Layer By Layer ◽  
Single Walled Carbon ◽  
Exchange Membrane ◽  
Walled Carbon Nanotubes

ABSTRACTElectrodes which are resistant to chemical poisoning by CO, S, and other fuel impurities are needed to replace Pt in proton exchange membrane (PEM) fuel cells. We have designed composite electrodes comprised of single walled carbon nanotubes (CNTs) within a conducting polymer matrix. A method for solubilizing single-walled carbon nanotubes (CNTs) in aqueous media using polyelectrolyte layer-by-layer (LbL) nanoassembly of polystyrene sulfonate (PSS) and polyallylamine (PAH) at the CNT surface is elucidated. Once soluble, the CNTs were assembled onto planar substrates using alternate LbL nanoassembly to form nanocomposite films. These films will later be tested for their potential as alternative anodes in proton exchange membrane fuel cells.

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