نتایج جستجو برای: direct methanol fuel cells

تعداد نتایج: 1829392  

Journal: :Chemical communications 2011
Xuezhong Gong Yun Yang Shaoming Huang

Rarely-observed polycrystalline twinned Pt nanoparticles (NPs) and length-controlled Pt nanorods (NRs) with exposed high index facets were prepared through an unexpectedly catalytic growth approach from low-cost Mn(3)O(4) NPs. The as-prepared Pt NRs exhibit higher catalytic activity and better stability for the oxidization of methanol than commercial Pt/C catalysts, indicating the promise of th...

2018
Wei Yuan Guoyun Fang Zongtao Li Yonghui Chen Yong Tang

Methanol crossover (MCO) significantly affects the performance of a direct methanol fuel cell (DMFC). In order to reduce its effect, this study presents in-house carbon nanofiber webs (CNWs) used as a porous methanol barrier for MCO control in a passive DMFC. The CNW is made from polyacrylonitrile (PAN) by using electrospinning and heat treatment. The impacts of PAN concentration and carbonizin...

2012
Arfat Anis S. M. Al-Zahrani F. A. Abd El Aleem

Direct alcohol fuel cells have been attracting enormous research interest as power sources for vehicles and portable electronic devices because alcohols are readily available, their storage and transport can be easily handled with the existing fuel infrastructure, and they commonly have high mass-specific and volumetric energy densities. Methanol is the most studied fuel for direct alcohol fuel...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران 1388

چکیده ندارد.

Journal: :Chemical communications 2015
Jing Li Weiwei Cai Liying Ma Yunfeng Zhang Zhangxian Chen Hansong Cheng

We report here a novel proton exchange membrane with remarkably high methanol-permeation resistivity and excellent proton conductivity enabled by carefully designed self-assembled ionic conductive channels. A direct methanol fuel cell utilizing the membrane performs well with a 20 M methanol solution, very close to the concentration of neat methanol.

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