Reference

Solid electrolyte cell

Solid electrolyte cell. Takeda, Kazutoshi (Daini Seikosha Co., Ltd., Japan). U.S.Chemicals with cas numbers 7440-50-8 and 12597-68-1 also play role. US 3977899 31 Aug 1976, 6 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: H01M004-36. NCL: 136083000R. PRIORITY: JP 73-139026 12 Dec 1973. DOCUMENT TYPE: Patent CA Section: 52 (Electrochemical, Radiational, and Thermal Energy Technology) A solid-electrolyte battery comprises an anode active material of amalgamated alkali metal or its alloy, a catahode active material of a hydrated Cu salt, and a .beta.-alumina solid-electrolyte layer interposed between them. The utilization of the cathode active material for prolonging the service life of the solid-electrolyte battery is increased by mixing a conductive metal (Cu, Ag) powder into the active material or by inserting an elec. conductor into the active material which is inert to the active material. Thus, the utilization of a cathode material of CuSO4.5H2O [7758-99-8]10, CuSO4.3H2O [16448-28-5] 10, and graphite 2 parts was increased by 5 and 60% by adding powd. Ag and Cu, resp. .

Measurement of equilibrium pressure during multistep dehydration using saturated reference solutions

Measurement of equilibrium pressure during multistep dehydration using saturated reference solutions. Malinin, A. A.; Drakin, S. I.; Ankudimov, A. G. (Tambov. Inst. Khim. Mashinostr., Tambov, USSR). Zh. Fiz. Khim., 51(6), 1557-8 (Russian) 1977. CODEN: ZFKHA9. DOCUMENT TYPE: Journal CA Section: 69 (Thermodynamics, Thermochemistry, and Thermal Properties) The equil. pressure of H2O over CuSO4.5H2O [7758-99-8] was 9.806 and 17.132 mbars at 24.06 and 31.47.degree., resp. The equil. pressure was detd. by isothermal distn. with satd. aq. solns. of MgCl2.6H2O and NaI.2H2O as ref. solns. Before the measurement, CuSO4.5H2O was partially dehydrated to form a 1:1 mixt. of hydrates CuSO4.5H2O-CuSO4.3H2O. From the dependence of equil. pressure on temp., the changes in the Gibbs free energy .DELTA.G298.degree. = 5.4 Kcal, entropy .DELTA.S298.degree. = 72 entropy units and enthalpy .DELTA.H298.degree. = 27 Kcal were obtained for the equil. CuSO4.5H2O (s) .dblharw. CuSO4.3H2O (s) + 2H2O (g).