Direct fuel oxidization yields major fuel cell power system simplifications and potential performance advantages, particularly for an automotive power plant application. The system simplification is particularly striking when a direct fuel system is compared to an “indirect” fuel cell system in a vehicle (where the fuel on board must be “reformed” and “cleaned” to provide a hydrogen-rich gas “r...

The idea of a fuel cell was first discovered in 1839 by Christian Friedrich Schönbein [64] and William Grove [27]. Independently from each other they provided the foundation for the development of many different kinds of fuel cells. Today’s fuel cells are mostly classified by the type of electrolyte used in the cells. The most common types are polymer electrolyte fuel cells PEFC (developed by W...

We report a Pd-Co (3:1)/graphene oxide (Pd3Co /GO) catalyst through a one-step strategy. GO is synthesized from graphite electrodes using ionic liquid-assisted electrochemical exfoliation. Controllable GO-supported Pd3Co electrocatalystis then was reduced by ethylene glycol as a stabilizing agent to prepare highly dispersed PdCo nanoparticles on carbon graphene oxide to be used as oxygen reduct...

Electrochemical oxygen reduction reaction (ORR) represents a crucial cathodic process of different fuel cells. The development highly active and stable noble metal-free ORR electrocatalysts remains as one major challenges. Herein, we report cobalt/nitrogen co-doped porous carbon materials (Co-N-C) originated from well-designed bimetal-organic frameworks (Zn100-xCox-ZIF) efficient in both pH-neu...

This study provides a step-by-step, up-to-date fuel cell fundamentals, thermodynamic and electrochemical principles, system evaluation factors via case of 10-kW alkaline designed to operate in space applications. The also produces 100 kg pure water 5.5 kW heat. is modelled using MATLAB ANSYS Fluent. Then, the model verified with theoretical experimental results from literature. A parametric var...

We present here a critical review of several technologically important electrocatalytic systems operating in alkaline electrolytes. These include the oxygen reduction reaction (ORR) occurring on catalysts containing Pt, Pd, Ir, Ru, or Ag, the methanol oxidation reaction (MOR) occurring on Pt-containing catalysts, and the ethanol oxidation reaction (EOR) occurring on Ni-Co-Fe alloy catalysts. Ea...

background: this study was undertaken to examine the reversibility of renal injury in the male new zealand white rabbits sub­se­quent to a 90-days exposure to uranyl nitrate (un) in drinking water. animals were exposed for 90 days to uranyl ni­trate in their drinking water (24 or 500mg/l). control group were given municipal tap water. methods: the indicators of kidney function measured in this ...

Alkaline polyelectrolyte fuel cell now receives growing attention as a promising candidate to serve as the next generation energy-generating device by enabling the use of non-precious metal catalysts (silver, cobalt, nickel et al.). However, the development and application of alkaline polyelectrolyte fuel cell is still blocked by the poor hydroxide conductivity of anion exchange membranes. In o...