Electrochemical cell system for voltammetry of high purity solvents

A ceramic supported SOFC for operation at 950°C is being developed by Rolls Royce Fuel Cell Systems (RRFCS). In parallel with the evolving design of the fuel cell system, it is necessary to ensure reliability not only of the electrochemical cell, but also the main structure under both manufacture and operational constraints. With a ceramic based system for use at high temperature this presents particular challenges, and to address these, RRFCS is in partnership with leading academic institutions including Imperial College London and the University of Genoa supported by the European Union. This paper will identify potential areas of concern for reliability and integrity of the fuel cell system, and will indicate the work that is being undertaken to ensure reliability, including thermomechanical stresses arising from fluid flow, electrochemical reactions and operational temperature distributions; joining of components; assessment of the stresses within ceramic structures, manufacture tolerances of dimensions and material properties.

Download Full-text

Photonic Crystal Structures as a Basis for a Three-Dimensionally Interpenetrating Electrochemical-Cell System

Advanced Materials ◽

10.1002/adma.200600295 ◽

2006 ◽

Vol 18 (13) ◽

pp. 1750-1753 ◽

Cited By ~ 87

Author(s):

N. S. Ergang ◽

J. C. Lytle ◽

K. T. Lee ◽

S. M. Oh ◽

W. H. Smyrl ◽

...

Keyword(s):

Photonic Crystal ◽

Crystal Structures ◽

Electrochemical Cell ◽

Cell System

Download Full-text

A dual-electrochemical cell to study the biocorrosion of stainless steel

Water Science & Technology ◽

10.2166/wst.2007.296 ◽

2007 ◽

Vol 55 (8-9) ◽

pp. 499-504 ◽

Cited By ~ 2

Author(s):

F.A. Lopes ◽

S. Perrin ◽

D. Féron

Keyword(s):

Stainless Steel ◽

Electrochemical Cell ◽

Steel Sample ◽

Cell System ◽

Microbiologically Influenced Corrosion ◽

Natural Environments ◽

Stainless Steel Sample ◽

Anaerobic Conditions ◽

Galvanic Current ◽

Sulphide Concentration

The presence of microorganisms on metal surfaces can alter the local physical/chemical conditions and lead to microbiologically influenced corrosion (MIC). The goal of the present work was to study the effect of a mixed aerobic–anaerobic biofilm on the behaviour of stainless steel (316 L) in underground conditions. Rather than testing different bacteria or consortia, investigations were based on the mechanisms of MIC. Mixed biofilms were simulated by the addition of glucose oxidase to reproduce the aerobic conditions and by sulphide or sulphate-reducing bacteria (SRB) for the anaerobic conditions. A double thermostated electrochemical cell has been developed to study the coupling between aerobic and anaerobic conditions. Results suggested a transfer of electrons from the stainless steel sample of the anaerobic cell to the stainless steel sample of the aerobic one. Inorganic sulphide was replaced by SRB in the anaerobic cell revealing an increase of the galvanic current which may be explained by an effect of lactate and/or acetate on the anodic reaction or by a high sulphide concentration in the biofilm. The results of this study underline that the dual-electrochemical cell system is representative of phenomena present in natural environments and should be considered as an option when studying MIC.

Download Full-text

THE Cl/Si(100) INTERFACE OBSERVED BY ESDIAD AND RELATED TECHNIQUES

Surface Review and Letters ◽

10.1142/s0218625x94000618 ◽

1994 ◽

Vol 01 (04) ◽

pp. 539-543 ◽

Cited By ~ 7

Author(s):

Q. GUO ◽

D. STERRATT ◽

E.M. WILLIAMS

Keyword(s):

High Purity ◽

Electrochemical Cell ◽

Gas Generation ◽

Gas Uptake ◽

Chlorine Gas

The adsorption of chlorine on Si(100) surface has been studied using ESDIAD in conjunction with AES and gas uptake techniques. This work presents an extension of earlier studies of the adsorption of halogen gases at Si(100) which served to initiate our development of ESDIAD technique at the IRC. In the present instance, we report the findings in experiments with high-purity chlorine gas from a bottle, which is distinct from our earlier approach with an electrochemical cell for chlorine gas generation. Two types of adsorbate configurations which transform irreversibly are investigated.

Download Full-text