Low durability is the major challenge hindering the large-scale implementation of proton exchange membrane fuel cell (PEMFC) technology, and corrosion of carbon support materials of current catalysts is the main cause. Here, we describe the finding of remarkably high durability with the use of a novel support material. This material is based on hollow carbon nanocages developed with a high degr...

To simulate a new economical architecture for PEM fuel cell and investigate the effectiveness of the introduced structure on the performance, computational fluid dynamics (CFD) code is used to solve the equations for a single domain of the cell namely: the flow field, the mass conservation, the energy conservation, the species transport, and the electric/ionic fields under the assumptions of st...

Governments and private investors are becoming aware of the problems derived from the energy dependency on fossil fuels and other non-renewable energies. In this context, proton exchange membrane fuel cells (PEMFC), which use hydrogen as fuel, are gaining increasing attention as clean and efficient energy conversion devices for a broad range of applications, such as automotive, stationary combi...

• The thermal management strategies of PEMFC are reviewed. waste heat recovery pathways presented. challenges and prospects the aforementioned areas discussed. Despite that Proton Exchange Membrane Fuel Cell (PEMFC) is considered to be an efficient power device; around half energy produced from electrochemical reaction dissipated as due irreversibility cathodic reaction, Ohmic resistance, mass ...

Maximum Power Point (MPP) tracker has an important role in the performance of fuel cell (FC) systems improvement. Tow parameters which have effect on the Fuel cell output power are temperature and membrane water. So contents make the MPP change by with variations in each parameter. In this paper, a new maximum power point tracking (MPPT) method for Proton Exchange Membrane (PEM) fuel cell is pr...

Proton exchange membrane fuel cell (PEMFC) is a portable and clean power generation device. The structural arrangement of the flow field has significant influence on delivery efficiency PEMFC. In this article, new bionic channel designed based inspiration spider shape. branch width corner are studied as focus, its simulation carried out by method computational fluid dynamics (CFD). results show...

In this paper, a high-efficiency fuel cell implemented by an LLC resonant dc–dc converter is proposed to save the cost and energy of fuel cell. The proposed converter has zero-voltage switching (ZVS) operation of the primary switches and zero-current switching (ZCS) operation of the rectifier diodes. By frequency modulation control, the output impedance of an LLC resonant converter can be regul...

0014-3057/$ see front matter 2010 Published b doi:10.1016/j.eurpolymj.2010.03.005 * Corresponding author. Tel.: +82 2 958 5299; fax E-mail address: [email protected] (H.-J. Kim). Polymer blending is used to modify or improve the dimensional and thermal stability of any two different polymers or copolymers. In this study, both sulfonated polybenzimidazole homopolymer (MS-p-PBI 100) and sulfonat...

The electrochemically active area of a proton exchange membrane fuel cell (PEMFC) is investigated using conductive probe atomic force microscopy (CP-AFM). A platinum-coated AFM tip is used as a nanoscale cathode in an operating PEMFC. We present results that show highly inhomogeneous distributions of conductive surface domains at several length scales. At length scales on the order of the aqueo...