By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Nanoporous. According to news reporting out of Tempe, Arizona, by NewsRx editors, research stated, "Dealloying, the selective dissolution of one or more of the elemental components of an alloy, is an important corrosion mechanism and a technologically relevant process used to fabricate nanoporous metals for a variety of applications including catalysis, sensing, actuation, supercapacitors and radiation-damage-resistant materials. In noble-metal alloy systems for which the ambient-temperature solid-state diffusivity is minuscule, dealloying occurs at a composition-dependent critical potential above which bicontinuous nanoporous structures evolve and below which a full-coverage layer of the more-noble component forms causing the alloy surface to become passive."
Our news journalists obtained a quote from the research from Arizona State University, "In contrast, for alloy systems exhibiting significant solid-state diffusive transport, our understanding of dealloying-induced morphologies and the electrochemical parameters controlling this are largely unexplored. Here, we examine dealloying of Li from Li-Sn alloys and show that depending on alloy composition, particle size and dealloying rate, all known dealloyed morphologies evolve including bicontinuous nanoporous structures and hollow core-shell particles. Furthermore, we elucidate the role of bulk diffusion in morphology evolution using chronopotentiometry and linear sweep voltammetry."
According to the news editors, the research concluded: "Our results may have implications for lithium-ion battery development while significantly broadening the spectrum of strategies for obtaining new nanoporous materials through dealloying."
For more information on this research see: Spontaneous evolution of bicontinuous nanostructures in dealloyed Li-based systems. Nature Materials, 2013;12(12):1102-6. (Nature Publishing Group - www.nature.com/; Nature Materials - www.nature.com/nmat/)
Our news journalists report that additional information may be obtained by contacting Q. Chen, Ira A Fulton School of Engineering, Arizona State University, Tempe, Arizona 85281, United States (see also Nanoporous).
Keywords for this news article include: Tempe, Arizona, Nanoporous, United States, Nanotechnology, Emerging Technologies, North and Central America.
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