scholarly journals Potential Feature of Combined AB5-Type Metal Hydride Tank and PEMFC as a Safer System for Hydrogen Fueling in Bangladesh

2021 ◽  
Vol 9 ◽  
Author(s):  
Md Abdus Salam ◽  
Thauhidul Islam ◽  
Kawsar Ahmed ◽  
Md Sahab uddin ◽  
Shehan Habib ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Metal Hydride ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Water Bath ◽  
Hydrogen Fuel Cell ◽  
Combined System ◽  
Load Demand ◽  
Consumption Frequency ◽  
Exchange Membrane

Metal hydrides are very much reported as a potential safe option for high-density hydrogen storage materials. A combined system of proton-exchange membrane hydrogen fuel cell (PEMFC) and metal hydride (MH) tanks is designed to investigate their characteristics and performances as hydrogen storage and stable power supply system. An AB5-type (LaCe)Ni5 material containing three MH tanks is selected for investigation. Endothermic dehydrogenation of metal hydride controls the hydrogen evolution rates during a discharging period, which reduces the risk of accidents. The MH tank charged at a 20°C water bath sustains and supplies hydrogen for a longer time of 240 min. The performances of the MH tank at a water bath of 20°C and 10-bar conditions correspond to the optimum condition of hydrogen storage at the MH tank of Pragma Industries. The performances of the combined system were investigated in different working conditions. The system sustains and supplies hydrogen to PEMFC for 240, 160, 130, and 110 min for the working loads of 250, 500, 1,000, and 2,000 W, accordingly. It is concluded that hydrogen consumption frequency increases for higher load demand.

Metal hydride hydrogen storage and supply systems for electric forklift with low-temperature proton exchange membrane fuel cell power module

2016 ◽  
Vol 41 (31) ◽  
pp. 13831-13842 ◽  
Author(s):  
Mykhaylo V. Lototskyy ◽  
Ivan Tolj ◽  
Moegamat Wafeeq Davids ◽  
Yevgeniy V. Klochko ◽  
Adrian Parsons ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Low Temperature ◽  
Hydrogen Storage ◽  
Metal Hydride ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Power Module ◽  
Hydride Hydrogen ◽  
Exchange Membrane ◽  
Supply Systems

scholarly journals Kilowatt-Scale Fuel Cell Systems Powered by Recycled Aluminum

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Peter Godart ◽  
Jason Fischman ◽  
Douglas Hart
Keyword(s):  
Fuel Cell ◽  
Power System ◽  
Proton Exchange Membrane ◽  
Electrical Power ◽  
Hydrogen Gas ◽  
Proton Exchange ◽  
Hydrogen Fuel Cell ◽  
Cell Systems ◽  
Scrap Aluminum ◽  
Exchange Membrane

Abstract Presented here is a novel system that uses an aluminum-based fuel to continuously produce electrical power at the kilowatt scale via a hydrogen fuel cell. This fuel has an energy density of 23.3 kW h/L and can be produced from abundant scrap aluminum via a minimal surface treatment of gallium and indium. These additional metals, which in total comprise 2.5% of the fuel’s mass, permeate the grain boundary network of the aluminum to disrupt its oxide layer, thereby enabling the fuel to react exothermically with water to produce hydrogen gas and aluminum oxyhydroxide (AlOOH), an inert and valuable byproduct. To generate electrical power using this fuel, the aluminum–water reaction is controlled via water input to a reaction vessel in order to produce a constant flow of hydrogen, which is then consumed in a fuel cell to produce electricity. As validation of this power system architecture, we present the design and implementation of two proton-exchange membrane (PEM) fuel cell systems that successfully demonstrate this approach. The first is a 3 kW emergency power supply, and the second is a 10 kW power system integrated into a BMW i3 electric vehicle.

scholarly journals A noble metal-free proton-exchange membrane fuel cell based on bio-inspired molecular catalysts

2015 ◽  
Vol 6 (3) ◽  
pp. 2050-2053 ◽  
Author(s):  
P. D. Tran ◽  
A. Morozan ◽  
S. Archambault ◽  
J. Heidkamp ◽  
P. Chenevier ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Noble Metal ◽  
Proton Exchange Membrane ◽  
Polymer Electrolyte Membrane ◽  
Proton Exchange ◽  
Hydrogen Fuel Cell ◽  
Metal Free ◽  
Electrolyte Membrane ◽  
Molecular Catalysts ◽  
Exchange Membrane

Bio-inspired chemistry allowed for the development of the first noble metal-free polymer electrolyte membrane hydrogen fuel cell (PEMFC). The device proved operational under technologically relevant conditions.

Enhancing the Efficiency of a PEM Hydrogen Fuel Cell with Synthesized Metal-Nanoparticle/Graphene Composites Synergy

2014 ◽  
Vol 1658 ◽  
Author(s):  
Rebecca Isseroff ◽  
Benjamin Akhavan ◽  
Cheng Pan ◽  
Harry Shan He ◽  
Jonathan Sokolov ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Au Nanoparticles ◽  
Proton Exchange ◽  
Metal Nanoparticle ◽  
Hydrogen Fuel Cell ◽  
Cell Efficiency ◽  
Transmission Electron ◽  
Exchange Membrane

ABSTRACTObstructing commercialization of Proton Exchange Membrane Fuel Cells (PEMFC) is the soaring cost of platinum and other catalysts used to increase membrane efficiency. The goal of this investigation is to find a relatively inexpensive catalyst for coating the membrane and enhancing the efficiency of the PEMFC. Graphene oxide was reduced using NaBH4 in the presence of metal salts, primarily KAuCl4 and K2PtCl4, to synthesize metal-nanoparticle/reduced graphene oxide (RGO). FTIR indicated the successful synthesis of RGO, while Transmission Electron Microscopy displayed the presence of nanoparticles on RGO sheets. Nafion® membranes were coated with metal-nanoparticle/RGO and tested in an experimental PEMFC alongside bare Nafion®, Gold (Au) nanoparticles, and RGO. The metal-nanoparticle/RGO composites enhanced the PEMFC compared to bare Nafion®. Au-RGO, the best catalyst composite, increased the efficiency up to 150% better than nanoparticles or RGO alone while using only 1% of the concentration of Au nanoparticles. Theoretical power output of the Au-RGO synergy could increase fuel cell efficiency up to 18 times more than the Au-nanoparticles themselves by altering concentrations of Au nanoparticles in Au-RGO. The Au nanoparticles changed the structure and catalytic ability of graphene in the Au-RGO, offering a promising future for PEM fuel cell technology.

scholarly journals Green synthesis of olefin-linked covalent organic frameworks for hydrogen fuel cell applications

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Zhifang Wang ◽  
Yi Yang ◽  
Zhengfeng Zhao ◽  
Penghui Zhang ◽  
Yushu Zhang ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Green Synthesis ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Bonding Interactions ◽  
Solvent Free Conditions ◽  
Green Strategy ◽  
Exchange Membrane ◽  
A Current

AbstractGreen synthesis of crystalline porous materials for energy-related applications is of great significance but very challenging. Here, we create a green strategy to fabricate a highly crystalline olefin-linked pyrazine-based covalent organic framework (COF) with high robustness and porosity under solvent-free conditions. The abundant nitrogen sites, high hydrophilicity, and well-defined one-dimensional nanochannels make the resulting COF an ideal platform to confine and stabilize the H3PO4 network in the pores through hydrogen-bonding interactions. The resulting material exhibits low activation energy (Ea) of 0.06 eV, and ultrahigh proton conductivity across a wide relative humidity (10–90 %) and temperature range (25–80 °C). A realistic proton exchange membrane fuel cell using the olefin-linked COF as the solid electrolyte achieve a maximum power of 135 mW cm−2 and a current density of 676 mA cm−2, which exceeds all reported COF materials.

Sign in / Sign up

Export Citation Format

Share Document