𝔖 Bobbio Scriptorium
✦   LIBER   ✦

An electrochemical investigation of graphite surfaces

✍ Scribed by K.F. Blurton

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
547 KB
Volume
18
Category
Article
ISSN
0013-4686

No coin nor oath required. For personal study only.

✦ Synopsis

Current-potential curves were determined during the application of a triangular potential sweep to a graphiteelectrode immersed in acid electrolyte. A maximum of 3 anodic and 3 cathodic peaks were observed in these curves depending on the experimentalconditions. The anodic peaks in the potential ranges (us standard hydrogen electrode potential) of 0*59V-O~91V, of 0*97V-1.15V and of 1*35V-1.45V were associated with cathodic peaks in the potential ranges of O-47V-O.79V and of 0.83V-1

,OlV and at a potential of 0*25V, respectively. It is proposed that the anodic peaks were caused by the oxidation of hydroquinone-like groups in different environments on the graphite electrode surface to form quinone-like groups while the cathodic peaks were caused by the reduction of these quinonelike groups.

πŸ“œ SIMILAR VOLUMES

Transport of intercalated anions in grap
Transport of intercalated anions in graphiteβ€”an electrochemical investigation
✍ Holger Krohn πŸ“‚ Article πŸ“… 1985 πŸ› Elsevier Science 🌐 English βš– 934 KB

Three electrochemical methods: I) open circuit potential relaxation after galvanostatic charging; 2) Devanathan method with graphite membrane electrode; 3) chronodmperometry, evaluation of Cottrell's equation; have been systematically applied to the investigation of transport of aniom (HSO;, HCIO; ,

An investigation of the reactivities of
An investigation of the reactivities of an isotropic nuclear graphite and β€œPoco” graphite
✍ J. Dollimore; C.M. Freedman πŸ“‚ Article πŸ“… 1972 πŸ› Elsevier Science 🌐 English βš– 144 KB

The effect of calcium, iron, silicon, titanium and vanadium was determined on the rates of carbon-oxygen, carbon-carbon dioxide and carbon-steam reactions. A general equation describing the weight loss-exposure time relationship was also developed for all reaction systems investigated. ## 84. Infiu

An investigation of stress effects on gr
An investigation of stress effects on graphite oxidation
✍ D.R. Marx; P.A. Thrower πŸ“‚ Article πŸ“… 1983 πŸ› Elsevier Science 🌐 English βš– 975 KB

The gasification rate of Great Lakes H-440 graphite was studied using either CO, or H,O as the reactant, while at the same time applying varying compressive stresses to the samples of up to 10% of the compressive strength. The concentrations of reaction products were continuously monitored using hig

259. An investigation of the impact prop
259. An investigation of the impact properties of graphite
✍ M. Birch; J.E. Brocklehurst πŸ“‚ Article πŸ“… 1982 πŸ› Elsevier Science 🌐 English βš– 131 KB

Thermal treatment of soft carbons leads to progressive graphitization. It is improbable in nature since it requires a high activation energy. Graphite formation is thus attributed to shear stresses caused by pressure and geothermal gradient as in high pressure-high temperature experiments. A thermal

Surface analysis for the investigation o
Surface analysis for the investigation of electrochemical and corrosion systems
✍ Peter M.A. Sherwood πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 921 KB

The use of surface analysis in investigating electrochemical and corrosion systems is discussed. In particular x-ray photoelectron spectroscopy (XPS) in both the core and valence band region are described. Examples are given for metallic and carbon fiber electrode systems, and the role of core XPS c