TVA’s Brief in Reply to Plaintiffs’ Post-Trial Brief, \u3cem\u3eTVA v. Hill et al\u3c/em\u3e, Civil Action No. 3-76-48

Brief for the defendants in response to the plaintiffs\u27 post-trial brief in the case of TVA v. Hill et al in the United States District Court for the Eastern District of Tennessee, Northern Division

Trial Brief of TVA, \u3cem\u3eTVA v. Hill et al\u3c/em\u3e, Civil Action No. 3-76-48

Brief for the defendants in the case of TVA v. Hill et al in the United States District Court for the Eastern District of Tennessee, Northern Divisio

Post-Trial Brief of Tennessee Valley Authority, \u3cem\u3eTVA v. Hill et al\u3c/em\u3e, Civil Action No. 3-76-48

Post-trial brief for the defendants in the case of TVA v. Hill et al in the United States District Court for the Eastern District of Tennessee, Northern Division

Electrochemical properties and electrochemical impedance spectroscopy of polypyrrole-coated platinum electrodes

Polypyrrole (PPy) films of different thickness were characterized by electrochemical impedance spectroscopy (EIS) measurements in acetonitrile and aqueous solutions, containing 0.1 M NaClO4 or sodium dodecylsulfate as the dopant. The PPy films were electrochemically deposited on Pt, and their electrochemical properties studied by cyclic voltammetry. Impedance spectra were obtained at potentials ranging from 0 to 0.8 V/SCE. The EIS data were fitted using two different equivalent electrical circuits (depending on the nature of the dopant). They involve a diffusive capacitance, which increased with the passing charge during electrosynthesis (i.e. film thickness) for ClO4--doped PPy, but was practically unaffected by the film thickness in the case of SDS-doped PPy. Also, a double-layer capacitance was found only in the circuit of ClO4--doped PPy. It increased with the film thickness, and showed a minimum near the open-circuit potential. Finally the charge-transfer resistance (Rct) obtained with SDS is nearly 200-fold higher than that obtained with ClO4- in the same solvent (H2O). With the same dopant (ClO4-), Rct is about five times higher in acetonitrile relative to water. All these EIS results of the different types of PPy suggest a relation with the wettability of the polymer.KEY WORDS: Conducting polymers, Polypyrrole, Electrochemical impedance spectroscopy, Equivalent-electrical circuit, Micellar mediaBull. Chem. Soc. Ethiop. 2006, 20(2), 279-293

Gold oxide films grown in the confined aqueous layer between gold and organic solvents

The properties of anodic passive films potentiostatically formed on polycrystalline gold in aqueous phosphate solutions were studied using voltammetry, electrochemical impedance spectroscopy, and contact angle measurements. The nature of the gold oxide layer was analyzed as a function of a potential holding in the aqueous double layer charge region at the interface between gold and the aqueous layer confined by insoluble organic solvents (hexane, chloroform, anisole, butyl acetate, xylene, and isopropyl ether). Different growth conditions change the homogeneity of the oxide layer leading to different passive properties. A synergetic effect on the gold oxidation of hydrogen dissolved in both the bulk metal and the confined aqueous layer is discussed.Instituto de Investigaciones Fisicoquímicas Teóricas y AplicadasInstituto de Física de Líquidos y Sistemas Biológico

Reply Brief for the Petitioner, \u3cem\u3eTVA v. Hill\u3c/em\u3e, No. 76-1701

Reply brief for the petitioner in the case of Tennessee Valley Authority v. Hiram G. Hill Jr., et al., heard by the United States Supreme Court in the October Term of 1977

Petition for a Writ of Certiorari to the United States Court of Appeals for the Sixth Circuit, \u3cem\u3eTVA v. Hill\u3c/em\u3e, No. 76-1701

Petition requesting that the United States Supreme Court hear an appeal to the decision of the United States Court of Appeals for the Sixth Circuit in Tennessee Valley Authority v. Hiram G. Hill Jr., et al.

Brief for the Petitioner, \u3cem\u3eTVA v. Hill\u3c/em\u3e, No. 76-1701

Brief for the petitioner in the case of Tennessee Valley Authority v. Hiram G. Hill Jr., et al., heard by the United States Supreme Court in the October Term of 1977