Improvement of Pt-Catalyst Dispersion and Utilization for Direct Methanol Fuel Cells Using Silane Coupling Agent

2007 ◽  
Vol 154 (6) ◽  
pp. B528 ◽  
Author(s):  
Fu-Chi Wu ◽  
Chi-Chao Wan ◽  
Yung-Yun Wang ◽  
Li-Duan Tsai ◽  
Kan-Ling Hsueh
Keyword(s):  
Fuel Cells ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Direct Methanol Fuel Cells ◽  
Pt Catalyst ◽  
Silane Coupling ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Catalyst Dispersion

Preparation and Characterization of Highly Ordered Graphitic Mesoporous Carbon as a Pt Catalyst Support for Direct Methanol Fuel Cells

2005 ◽  
Vol 17 (15) ◽  
pp. 3960-3967 ◽  
Author(s):  
Fabing Su ◽  
Jianhuang Zeng ◽  
Xiaoying Bao ◽  
Yaoshan Yu ◽  
Jim Yang Lee ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Mesoporous Carbon ◽  
Direct Methanol Fuel Cells ◽  
Catalyst Support ◽  
Pt Catalyst ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Low-cost polyaniline coated carbonized materials as support for Pt-based electrocatalysts for direct methanol fuel cells (DMFC)

2020 ◽  
Vol 10 (11) ◽  
pp. 1892-1899
Author(s):  
Naziermu Dongmulati ◽  
Xieraili Maimaitiyiming
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Filter Paper ◽  
Direct Methanol Fuel Cells ◽  
Low Cost ◽  
Pt Catalyst ◽  
Support Materials ◽  
Toilet Paper ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Direct methanol fuel cells (DMFC) technology has achieved commercial pre-feasibility, but its high cost and insufficient durability are the main obstacles to its full utilization. It has been determined that the problem of durability and high-cost has hindered the development of the carbon carrier used for Pt catalyst. Therefore, there is a great need to find low-cost and robust alternative support. In this paper, different carbonized materials were studied as supports for Pt-based electrocatalysts. Low-cost materials (lab-gown, toilet paper and filter paper) are carbonized with high temperature and modified by polyaniline to provide sufficient surface modification to improve Pt deposition on these supports. After comparison, it was found that carbonized lab-gown has better electrocatalytic performance than single-walled carbon nanotubes, carbonized toilet paper, and filter paper. The results provides an effective basis for replacing high cost and preparation of cumbersome carbon nanotubes with low cost and durable support materials.

Performance Enhancement of Alkaline Direct Methanol Fuel Cells by Ni/Al Layered Double Hydroxides

2010 ◽  
Vol 7 (3) ◽  
Author(s):  
Jason C. Ganley ◽  
Nana K. Karikari ◽  
Dharmaraj Raghavan
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Direct Methanol Fuel Cells ◽  
Cell Mass ◽  
Cell Polarization ◽  
Pt Catalyst ◽  
Enhancement Effect ◽  
Fuel Cell Performance ◽  
Direct Methanol ◽  
Methanol Fuel Cells

This paper reports the results of fuel cell performance tests detailing the effects of Ni/Al layered double hydroxide (Ni-LDH) on the performance of alkaline direct methanol fuel cells (DMFCs). It is desirable to enhance the maximum rate of methanol consumption at a fuel cell’s anode so that expensive bimetallic catalysts (such as Pt-Ru) would not be as essential to remedy the well-known sluggish kinetics and Pt catalyst deactivation tendencies of DMFCs. The test cells were constructed using partially hydrolyzed polyvinyl alcohol film membranes impregnated with a 10 M potassium hydroxide electrolyte. The cells were tested at a constant temperature of 40°C, and the effect of the addition of Ni-LDH to the membrane surface was studied by comparison of fuel cell polarization and power production curves of cells with Pt or Pt-Ru anodes paired with Pt cathodes. The benefits of Ni-LDH addition to DMFCs are clearly shown vis-à-vis the extended operating current densities and associated increases in power density for each catalyst type. The enhancement effect of Ni-LDH appears largely as enhancement of cell mass transport. Cells constructed with Pt anodes and membrane surfaces modified by Ni-LDH perform very nearly as well as Ni-LDH-free cells using bimetallic Pt-Ru anodes.

scholarly journals One-Step Microwave-Assisted Synthesis of PtNiCo/rGO Electrocatalysts with High Electrochemical Performance for Direct Methanol Fuel Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2206
Author(s):  
Kun-Yauh Shih ◽  
Jia-Jun Wei ◽  
Ming-Chi Tsai
Keyword(s):  
Graphene Oxide ◽  
Fuel Cells ◽  
Surface Area ◽  
Direct Methanol Fuel Cells ◽  
Pt Catalyst ◽  
Narrow Particle Size Distribution ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Platinum (Pt) is widely used as an activator in direct methanol fuel cells (DMFCs). However, the development of Pt catalyst is hindered due to its high cost and CO poisoning. A multi-metallic catalyst is a promising catalyst for fuel cells. We develop a simple and rapid method to synthesize PtNiCo/rGO nanocomposites (NCs). The PtNiCo/rGO NCs catalyst was obtained by microwave-assisted synthesis of graphene oxide (GO) with Pt, Ni, and Co precursors in ethylene glycol (EG) solution after heating for 20 min. The Pt-Ni-Co nanoparticles showed a narrow particle size distribution and were uniformly dispersed on the reduced graphene oxide without agglomeration. Compared with PtNiCo catalyst, PtNiCo/rGO NCs have superior electrocatalytic properties, including a large electrochemical active surface area (ECSA), the high catalytic activity of methanol, excellent anti-toxic properties, and high electrochemical stability. The ECSA can be up to 87.41 m2/g at a scan rate of 50 mV/s. They also have the lowest oxidation potential of CO. These excellent electrochemical performances are attributed to the uniform dispersion of PtNiCo nanoparticles, good conductivity, stability, and large specific surface area of the rGO carrier. The synthesized PtNiCo/rGO nanoparticles have an average size of 17.03 ± 1.93 nm. We also investigated the effect of catalyst material size on electrocatalytic performance, and the results indicate that PtNiCo/rGO NC catalysts can replace anode catalyst materials in fuel cell applications in the future.

Single-Wall Carbon Nanohorns Supporting Pt Catalyst in Direct Methanol Fuel Cells

2009 ◽  
Vol 113 (20) ◽  
pp. 8660-8667 ◽  
Author(s):  
Mayumi Kosaka ◽  
Sadanori Kuroshima ◽  
Kenji Kobayashi ◽  
Shoji Sekino ◽  
Toshinari Ichihashi ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Pt Catalyst ◽  
Single Wall Carbon ◽  
Carbon Nanohorns ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Single Wall Carbon Nanohorns

Progress and Perspectives in Passive Direct Methanol Fuel Cells Operating with Concentrated Methanol

2012 ◽  
Vol 7 (3) ◽  
pp. 1-7
Author(s):  
Naveen K. Shrivastavaa ◽  
◽  
Shashikant B. Thombreb ◽  
Kailas L. Wasewar ◽  
◽  
...  
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Hierarchical Nanostructured Pt8Ti-TiO2/C as an Efficient and Durable Anode Catalyst for Direct Methanol Fuel Cells

ACS Catalysis ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 7321-7327 ◽  
Author(s):  
Jakkid Sanetuntikul ◽  
Kriangsak Ketpang ◽  
Sangaraju Shanmugam
Keyword(s):  
Fuel Cells ◽  
Direct Methanol Fuel Cells ◽  
Anode Catalyst ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Layer-by-layer self-assembly of PDDA/PWA–Nafion composite membranes for direct methanol fuel cells

2010 ◽  
Vol 46 (9) ◽  
pp. 1434 ◽  
Author(s):  
Meng Yang ◽  
Shanfu Lu ◽  
Jinlin Lu ◽  
San Ping Jiang ◽  
Yan Xiang
Keyword(s):  
Fuel Cells ◽  
Self Assembly ◽  
Direct Methanol Fuel Cells ◽  
Composite Membranes ◽  
Layer By Layer ◽  
Direct Methanol ◽  
Methanol Fuel Cells
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