نتایج جستجو برای: dmfc membrane

تعداد نتایج: 389314  

2009
Hsien-Chih Peng Chin-Chang Chieng Fan-Gang Tseng

A high surface area and micro process integrated cathode for μ-DMFC is introduced in this study. CNTs growth inside micro structured cathode for catalyst support was employed for reaction surface increment, while liquid Nafion spun into radial arranged micro reaction holes controlled by centrifugal force was carried out to provide proper immersion ratio of CNTs in Nafion. The process is all int...

2006
Fuqiang Liu Chao-Yang Wang

The cathode catalyst layer (CL) in direct methanol fuel cells (DMFCs) has been optimized through a balance of ionomer and porosity distributions, oth playing important roles in affecting proton conduction and oxygen transport through a thick CL of DMFC. The effects of fabrication rocedure, ionomer content, and Pt distribution on the microstructure and performance of a cathode CL under low air f...

A novel Nafion®-based nanocomposite membrane was synthesized to be applied as direct methanol fuel cells (DMFCs). Carbon nanotubes (CNTs) were coated with a layer of silica and then reacted by chlorosulfonic acid to produce sulfonate-functionalized silicon dioxide coated carbon nanotubes (CNT@SiO2-SO3H). The functionalized CNTs were then introduced to Nafion®, and subsequently, methanol permeab...

2013
Masaki Isoda Atsushi Noritake

The dorsomedial frontal part of the cerebral cortex is consistently activated when people read the mental states of others, such as their beliefs, desires, and intentions, the ability known as having a theory of mind (ToM) or mentalizing. This ubiquitous finding has led many researchers to conclude that the dorsomedial frontal cortex (DMFC) constitutes a core component in mentalizing networks. ...

2004
XiaoFeng Xie Toby Hamblin Virendra K. Mathur

The gas diffusion layer (GDL) is vital to the performance and durability of direct methanol fuel cell (DMFC). The GDL plays an important role in water management, catalyst efficiency and conductivity of DMFC. The GDL consists of a carbon substrate that can either be woven or non-woven. The various substrates used to produce GDLs result in very different physical characteristics, particularly su...

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