Last edited by Maur
Sunday, May 17, 2020 | History

2 edition of electrochemical oxidation of methanol in acid and alkaline fuel cell environments found in the catalog.

electrochemical oxidation of methanol in acid and alkaline fuel cell environments

Philip David Naylor

electrochemical oxidation of methanol in acid and alkaline fuel cell environments

by Philip David Naylor

  • 373 Want to read
  • 17 Currently reading

Published .
Written in English


Edition Notes

Thesis (Ph.D.) - Loughborough University, 1998.

Statementby Philip David Naylor.
ID Numbers
Open LibraryOL18153718M

The Mechanism of Electrochemical Oxidation of Carbon Monoxide and Methanol on Platinum. CO Oxidation on Gold in Acidic Environments: Particle Size and Substrate Effects. The Journal of Physical Chemistry C Analysis of Reaction Kinetics for Carbon Monoxide and Carbon Dioxide on Polycrystalline Platinum Relative to Fuel Cell by: In alkaline fuel cells (AFC) [7], an aqueous solution of KOH is used as electrolyte. The operating temperature normally is about 80 °C; however, in the Apollo space missions AFC operating at °C have been used. Alkaline electrolytes offer more favorable oxygen reduction kinetics than acid electrolytes.

1. Introduction. Alternative and sustainable energy sources are highly desired for the current society, and the fuel cells technique has been brought to the forefront of modern energy sources driven by technological and scientific advances [,,, ].Fuel cells fed with formic acid have received considerable attention for the potential application in the ever-increasing energy demands of. More recently, researchers have examined various systems to increase the selectivity of the methane-to-methanol transformation. Fuel cells with proton-conducting membranes operating at low temperatures (≤°C) were adopted by Lee et al. to oxidize methane at the anode using the electrochemical oxidation of vapor water to generate active Author: Joonbaek Jang, Kangze Shen, Carlos G. Morales-Guio.

It is known that for many reactions, electrocatalysts perform better in alkaline electrolytes. In fact, one of the first direct methanol fuel cells (DMFCs) developed in by Justi and Winsel were operated in alkaline media and used porous nickel for the anode and porous nickel-silver for the cathode [].A problem with alkaline fuel cells is the carbonation of the solution due to CO 2 Cited by:   Electrochemical techniques, coupled with in situ scanning tunneling microscopy, have been used to examine the mechanism of CO oxidation and the role of surface structure in promoting CO oxidation on well-ordered and disordered Pt() in aqueous NaOH solutions. Oxidation of CO occurs in two distinct potential regions: the prepeak (− V) and the main peak ( V and higher).Cited by:


Share this book
You might also like
forest of fear.

forest of fear.

ALLIED HEALTHCARE PRODUCTS, INC.

ALLIED HEALTHCARE PRODUCTS, INC.

Prince Arthurs alphabet.

Prince Arthurs alphabet.

Peanuts

Peanuts

What Parliament is and does

What Parliament is and does

Rogues

Rogues

Reforming physician payment

Reforming physician payment

Spindel Conference 1994

Spindel Conference 1994

Wild Bill Hickok.

Wild Bill Hickok.

Solomons sword

Solomons sword

Garfield predicts!

Garfield predicts!

A comparison of book selection preferences of inner-city and suburban fourth and sixth graders

A comparison of book selection preferences of inner-city and suburban fourth and sixth graders

To Samuel Chamberlaine, Esq.

To Samuel Chamberlaine, Esq.

Early Tudor drama

Early Tudor drama

On religious progress beyond the Christian pale

On religious progress beyond the Christian pale

Gerard Manley Hopkins, the man and the poet.

Gerard Manley Hopkins, the man and the poet.

Electrochemical oxidation of methanol in acid and alkaline fuel cell environments by Philip David Naylor Download PDF EPUB FB2

The electrochemical oxidation of methanol in acid and alkaline fuel cell environments The electrochemical oxidation of methanol as applicable to low temperature fuel cell environments, has been : Philip David Naylor. The electrochemical oxidation of methanol as applicable to low temperature fuel cell environments, has been investigated.

The case for the use of methanol as a directly oxidisable fuel in alkaline electrolyte is : Philip David Naylor. The direct oxidation reaction of glycerol (GOR) was studied and compared to that of methanol (MOR) and ethanol (EOR) in both acid and alkaline media using commercial Pt/C, PtRu/C, Pd/C and PdNi/C.

Electrocatalytic Oxidation of Methanol at the Ni(OH) 2 NPs/MGCE In this work, methanol oxidation was first studied at a bare GCE in M NaOH solution (Fig.

The electrochemical re - sponse of the bare GCE in the absence of methanol is shown in curve (a); the addition of M methanol to the alkaline solu. MnO2/CNT Supported Pt and PtRu Nanocatalysts for Direct Methanol Fuel Cells. Langmuir25 (13), DOI: /law. Denis R. Godoi, Joelma Perez and H.

Mercedes Villullas. Effects of Alloyed and Oxide Phases on Methanol Oxidation of Pt−Ru/C Nanocatalysts of the Same Particle by: Although, the current density is still small, this result at least indicates the possibility of a fuel cell driven by acetic acid at high temperature.

Electrochemical oxidation of 1 m glucose solution was attempted at temperatures from to K but was not successful due to the production of char-like by: This dissertation summarizes the author's research effort to identify and synthesize novel electrocatalysts for application in proton exchange membrane fuel cells (PEMFCs), direct alcohol (acid and alkaline) fuel cells (DAFCs) and phosphoric acid fuel cells (PAFCs).

Electrocatalysis enables modification of rates of electrochemical reactions to achieve maximum selectivity, yield and efficiency. The cells were tested at a constant temperature of 40 ° C ⁠, and the effect of the addition of Ni-LDH to the membrane surface was studied by comparison of fuel cell polarization and power production curves of cells with Pt or Pt-Ru anodes paired with Pt cathodes.

The benefits of Ni-LDH addition to DMFCs are clearly shown vis-à-vis the Cited by: 6. Methanol produces CO 2 on electro-oxidation, and thus the problems related to CO 3 2− /HCO 3 − formation increase when methanol is used as the fuel in an alkaline fuel cell.

Another disadvantage related to the use of a liquid electrolyte is the “electrode flooding” if the liquid is very abundant or, on the contrary, the “electrode drying” if the liquid by: The author will show ca. 30 slides, with the various AFCs, circuits, designs, vehicles, etc.

2 nd Paper at this meeting: Alkaline Fuel Cell Operation with Ammonia and Methanol as Fuel Sources G. Alkaline membrane fuel cells Electrochemical double-layer structure Quasi-specific adsorption X-ray absorption spectroscopy ABSTRACT Enhancing the sluggish kinetics of electrochemical hydrogen-oxidation reaction in high pH environments is of crucial importance considering its applications in alkaline-membrane fuel cells (AMFC) and regenerative hy.

in low-temperature fuel cells. The reader will fi nd a general overview of the catalysis involved in the oxidation of alcohols such as methanol and ethanol. More unusually the oxidation of ethylene glycol and glycerol are also described in detail. Although the title for this book is specifi c to alcohol fuel cells it.

Performance of the fuel cell with low methanol concentrations is reported and in situ measurements of anode and cathode potentials were used to diagnose the fuel cell performance.

The influence of temperature, methanol feed concentration, and oxygen pressure are by: In this study, the electro-oxidation of the C 2 alcohols ethanol and ethylene glycol is investigated in acidic and alkaline environment by means of cyclic voltammetry, chronoamperometry and differential electrochemical mass spectrometry (DEMS).

It is shown that while in acidic medium both alcohols exhibit a comparable electrochemical performance, in alkaline medium the current densities for ethylene glycol in cyclic voltammetry Cited by:   ALKALINE FUEL CELL PRADEEP JAISWAL part-1 Sem-1 Roll no.

6 1 of operation ing upon medium and electrolyte used in fuel cells Fuel cells Proton exchange membrane fuel cells Direct methanol fuel cells Alkaline fuel cells Phosphoric acid fuel cells Molten carbonate fuel cells Solid oxide fuel cells 8. The electro-oxidation of methanol on Pt() is studied based on periodic density functional theory calculations.

The aqueous electrolyte is taken into account using an implicit solvent model, and the dependence of the reaction energetics on the electrode potential is derived using the concept of the computational hydrogen electrode. The total oxidation of methanol becomes Cited by: acid fuel cells and sluggish methanol oxidation kinetics at the anode of a direct methanol fuel cell 3.

Ohmic losses arising due to the resistive losses in the electrolyte and in the electrodes. The effects of these losses are perhaps most pronounced at intermediate current densities (~ to mA/cm2). Mass transport losses arisingFile Size: KB. “Electrochemical Power Sources: Batteries, Fuel Cells, and Supercapacitors” is a comprehensive textbook covering materials, applications and prospects of the aforementioned devices.

The high level overview provided makes this book an excellent resource for readers new to electrochemical devices as it. “Electrochemical Power Sources: Batteries, Fuel Cells, and Supercapacitors” is an excellent introductory text to electrochemical energy devices which covers material considerations, historical developments of the technology and future prospects, spanning fundamental mechanisms to engineering challenges at a high level perspective.

(Invited) Fuel Cell Electrocatalysis in Acid and Alkaline Media: The Role of the Electrode Potential in Active Site Generation journal, July Gottesfeld, S.

ECS Transactions, Vol. 66, Issue. Enhancing the sluggish kinetics of electrochemical hydrogen-oxidation reaction in high pH environments is of crucial importance considering its applications in alkaline-membrane fuel cells .Various types of fuel cells (alkaline, proton exchange membrane, direct methanol, molten carbonate, and solid oxide) are discussed in detail.

Discover the world's research 17+ million membersAuthor: Balasubramanian Viswanathan.The electrochemical oxidation of methanol was studied on the low index planes of platinum-(), (), ()-and on polycrystalline platinum in M HClO{sub 4}.

Presently, platinum is the most active electrocatalyst for this oxidation reaction and acid electrolytes are preferred because they are.