Nickel compounds, thermodynamic properties

The thermodynamic properties of magnesium make it a natural choice for use as an anode material in rechargeable batteries, as it may provide a considerably higher energy density than the commonly used lead-acid and nickel-cadmium systems, while in contrast to Pb and Cd, magnesium is inexpensive, environmentally friendly, and safe to handle. However, the development of Mg-ion batteries has so far been limited by the kinetics of Mg " " diffusion and the lack of suitable electrolytes. Actually, in spite of an expected general similarity between the processes of Li and Mg ion insertion into inorganic host materials, most of the compounds that exhibit fast and reversible Li ion insertion perform very poorly in Mg " ions. Hence, there... 

A. D. Mah and L.B. Pankratz, Contributions to the Data on Theoretical Metallurgy, XVI. Thermodynamic properties of Nickel and Its Inorganic Compounds, Bulletin 668, Bureau of Mines, U.S. Department of the Interior, Washington, D.C. 1976. 

Archer detailed the sources of previous thermodynamic property values for nickel and some of its compounds being of importance to environmental processes. This review is particularly relevant to the origin of values contained in the NBS Thermodynamic Tables [82WAG/EVA]. 

ARC] Archer, D. G., Thermodynamic properties of import to environmental processes and remediation. II. Previous thermodynamic property values for nickel and some of its compounds, J. Phys. Chem. Ref. Data, 28, (1999), 1485-1507. Cited on pages 80, 82, 83, 108, 128, 129, 186,253, 425,436. 

Sulfur compounds, whether organic or inorganic in nature, cause sulfidation in susceptible materials. The sulfide film, which forms on the surface of much con-stmction materials at low temperatures, becomes friable and melts at higher temperatures. The presence of molten sulfides (especially nickel sulfide) on a metal surface promotes the rapid conversion to metal sulfides at temperatures where these sulfides are thermodynamically stable. High-alloy materials such as 25% Cr, 20% Ni alloys are widely used, but these represent a compromise between sulfidation resistance and mechanical properties. Aluminum and similar diffusion coatings can be of use. 

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