Fuel Cell Principles

Srinivasan, S.; Krishnan, Lakshmi; Marozzi, C.A.

doi:10.1007/0-387-35402-6_4

Cited by 12 publications

(9 citation statements)

References 2 publications

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“…In particular, polymer electrolyte membrane fuel cells (PEMFCs) are based on a membrane made of a proton-conducting material such as Nafion, SPEEK, SPES and others sandwiched between two porous electrodes, where the electrochemical reactions involved in the operation of the device takes place [2]. PEMFCs are particularly attractive for their energy conversion efficiency (g up to over 50%), the high energy density and the simple construction, lacking any moving part [3,4].…”

Section: Introductionmentioning

confidence: 99%

Pt–Fe and Pt–Ni Carbon Nitride‐Based ‘Core–Shell’ ORR Electrocatalysts for Polymer Electrolyte Membrane Fuel Cells

Noto

Negro

2010

Fuel Cells

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This report describes the preparation of new bimetal carbon nitride (CN)‐based ‘core–shell’ electrocatalysts for the oxygen reduction reaction (ORR) for application in polymer electrolyte membrane fuel cells. The ‘core’ consists of graphitic carbon nanoparticles and the ‘shell’ of CN electrocatalysts. These latter are based on Pt–Fe and Pt–Ni active sites which, with respect to pure Pt, are devised for their improved ORR performance. This morphology allows to stabilise the active sites of the electrocatalysts by a chemical coordination process with the support as the coordinating agent. The wt% of N is lower than 2% to obtain electrocatalytic ‘shells’ with a good electron conductivity. The electrocatalysts with a ‘core–shell’ morphology were extensively characterised from the chemical, thermogravimetric and morphological points of view. Electrochemical measurements carried out by cyclic voltammetry using a thin‐film rotating ring‐disk electrode (CV–TF‐RRDE) method allowed to study the specific surface area of the active sites and to determine the ORR performance and the reaction mechanism. Finally, the materials were mounted at the cathode of single fuel cells and their performance was tested in operative conditions. The Pt mass required to achieve 1 kW was as low as 0.3 g, versus 1.11 g of the reference membrane‐electrode assembly.

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Section: Introductionmentioning

confidence: 99%

Pt–Fe and Pt–Ni Carbon Nitride‐Based ‘Core–Shell’ ORR Electrocatalysts for Polymer Electrolyte Membrane Fuel Cells

Noto

Negro

2010

Fuel Cells

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“…A fuel cell is an electrochemical technology capable of energy conversion. It is indeed capable to transform the chemical energy of a fuel into electricity [69]. A fuel cell may vary for it architecture, for the kind of fuel or for its catalyst; but it always consists of a few simple main parts ( Figure 3): electrodes (an anode and a cathode), electrolytes, and an external circuit [70].…”

Section: Fuel Cellmentioning

confidence: 99%

Biohydrogen from Microalgae: Production and Applications

et al. 2021

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The need to safeguard our planet by reducing carbon dioxide emissions has led to a significant development of research in the field of alternative energy sources. Hydrogen has proved to be the most promising molecule, as a fuel, due to its low environmental impact. Even if various methods already exist for producing hydrogen, most of them are not sustainable. Thus, research focuses on the biological sector, studying microalgae, and other microorganisms’ ability to produce this precious molecule in a natural way. In this review, we provide a description of the biochemical and molecular processes for the production of biohydrogen and give a general overview of one of the most interesting technologies in which hydrogen finds application for electricity production: fuel cells.

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“…[1][2][3] Current research efforts are focused on decreasing the usage of platinum in fuel cells by reducing the size of the platinum particles on the carbon surface. [4][5][6][7][8] However, platinum electrocatalysts have an inherent drawback of a lack of sufficient stability at high potentials.…”

mentioning

confidence: 99%