Proton conductors : solids, membranes, and gels--materials by Philippe Colomban

By Philippe Colomban

The current e-book covers diverse facets of proton conduction: the 1st half describes chemical and actual parameters important for quick proton conduction and proposes a class of alternative different types of proton conductors. comparability is made with different hydrogen containing fabrics (metals, graphites). the significance of partial water strain, the function of defects and floor phenomena are mentioned. the second one half treats the chemistry, constructions and electric houses of general fabrics from hydrogen bronzes to polymers through ice, hydroxides, acid sulphates, layer hydrates, clays, gels and porous or fractal media. The 3rd half discusses the equipment about the proton dynamics from neighborhood to macroscopic scale. The fourth half bargains with conductivity mechanisms and the final one offers usual purposes: electrochemical structures for construction or power garage and microionic units

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The linkages among the outmost clusters and the atomic order within them. However, various views about clusters and definitions can sometimes raise enough confusion that conclusions such as “it is useless (or misleading) to give a description of the whole (QC) structure” have appeared as the summary of a panel discussion during the Ninth International Conference on Quasicrystals (ICQ9) [89]. The reasons may on one hand relate to the structural complexities of ACs (and perhaps also to the quality of the refinements achieved) and, on the other hand, to diverse structural descriptions that different authors have given for nominally the same AC structures.

Shechtman D, Blech I, Gratias D, Cahn JW (1984) Phys Rev Lett 53:1951 Janot C (ed) (1994) Quasicrystals: a primer, 2nd edn. Oxford University Press, Oxford, UK Stadnik ZM (ed) (1999) Physical properties of quasicrystals. Springer, New York Massalski TB, Turchi PEA eds (2005) The science of complex alloy phases. The Minerals, Metals & Materials Society, Warrendale, PA Dubois JM, Janot C (eds) (2005) Useful quasicrystals. World Scientific, Singapore Macia E (2000) Appl Phys Lett 77:3045 Kameoka S, Tanabe T, Tsai AP (2004) Catal Today 93–95:23 Kelton KF, Gibbons PC (1997) MRS Bull 22:71 Man W, Megens M, Steinhardt PJ, Chaikin PM (2005) Nature 436:993 Andersen BC, Bloom PD, Baikerikar KG, Sheares VV, Mallapragada SK (2002) Biomaterials 23 Pauling L (1985) Nature 317:512 Pauling L (1990) Proc Natl Acad Sci USA 87:7849 International Union of Crystallography (1997) Acta Crystallogr A 48:922 Q.

The number of axial ligands and the symmetry of Pcs are mainly controlled by the nature of central metal atoms. The second effective method is the employment of peripherally substituted ligands [49–68]. Almost all Pcs of this type are synthesized by using substituted precursors such as substituted phthalonitriles as starting materials, although in principle this type of Pc can be prepared directly by chemical modification of the Pcs themselves. Generally, the preparation conditions of peripherally functionalized Pcs based on substituted precursors are softer than those employed in the synthesis of conventional unsubstituted Pcs, because the increased solubility of starting substituted precursors and the resulting peripherally substituted Pcs allow the employment of a wide variety of solvents.

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