Nanocrystalline was obtained by heating amorphous nanosized The material lithiation of synthesized spontaneous precipitation from equimolar aqueous solutions and using hydrogen peroxide as the oxidizing agent. materials were characterized chemical analysis, thermogravimetric differential thermal X-ray powder diffraction, scanning electron microscopy. Brunauer- Emmett-Teller method used to evaluate specific surface area. showed very good electrochemical performance delivering about full...

Titanium biomaterials’ response has been recognized to be affected by particles size, crystal structure, and surface properties. Chemical structural properties of these nanoparticle materials are important, but their size is the key aspect. The aim this study synthesis TiO2 nanoparticles sol-gel method, which an ideal technique prepare nanomaterials at low temperature. heat treatment can affect structure final product consequently its biological For reason, chemical synthesized was...

A new synthesis route has been applied to obtain . Instead of the conventional high‐temperature technique leading crystalline form, a solution producing amorphous form used. This material, after dehydration, shows an electrochemical performance exceeding that one. The rationale for this behavior mainly lies in microscopic factors, i.e., possibility unit cell insert up 9 Li+, instead six Furthermore, absence long‐range crystallographic order reduces length pathways through which Li+ ions...

Amorphous iron(III) phosphate was synthesized by spontaneous precipitation from equimolar aqueous solutions of and using hydrogen peroxide as the oxidizing agent. The material characterized chemical analysis, thermogravimetrical differential thermoanalysis, X-ray powder diffraction, scanning electron microscopy. tested a cathode in nonaqueous lithium cells. Galvanostatic intermittent titration technique used to follow intercalation process. effect firing on specific capacity also tested....

Murphy et al., (1981) and Abraham have investigated the possibility of a use transition metal oxides as substitutes TiS2 in cathodes for rechargeable Li cells, giving particular attention to V compounds formula V6O(13+y) with y less than 0.2. The considered materials greater energy densities TiS2. However, an important drawback is reported both V6O13.16 (nonstoichiometric). At 1.6 reduction process occurs which inhibits further rechargeability. This phenomenon probably related irreversible...

The reduction mechanism of the bronze in nonaqueous Li cells has been elucidated. Upon Li+ insertion, a solid solution is formed with an upper composition . Within this range, progressively fills tetrahedral sites available unit cell. Four such are supposed to be filled at limit. Beyond this, new phase nucleated accommodate excess Li+, resulting constant cell's OCV. insertions not greater than 3.0 eq/mol reversible, as shown by cycling behavior and x‐ray patterns. Owing outstanding structure...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxidative addition of phenols to bis(tricyclohexylphosphine)palladium. Synthesis and structural characterization trans-[Pd(PCy3)2(H)(OC6H5)].C6H5OH (1) trans-[Pd(PCy3)2(H)(OC6F5)].C6F5OH (2)C. Di Bugno, M. Pasquali, P. Leoni, Sabatino, D. BragaCite this: Inorg. Chem. 1989, 28, 7, 1390–1394Publication Date (Print):April 1, 1989Publication History Published online1 May 2002Published inissue 1 April...

Chitosan is a biopolymer derived from chitin. It non-toxic, biocompatible, bioactive, and biodegradable polymer. Due to its properties, chitosan has found applications in several different fields such as agriculture, food industry, medicine, paper fabrication, textile water treatment. In addition these good film-forming ability which allows it be widely used for the development of sensors biosensors. This review focused on use formulation electrochemical chemosensors. also aims provide an...

Abstract X‐ray microscopy (XRM) is a non‐destructive characterization technique that provides quantitative information regarding the morphology/composition of specimen and allows to perform multiscale multimodal 2D/3D experiments exploiting radiation‐matter interactions. XRM particularly suitable afford in situ images inner parts battery for early diagnosis its degradation non‐invasive way. Since traditional techniques (SEM, AFM, XRD) often require removal component from encapsulated device...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCopper(I)-carbon monoxide chemistry: genesis and chemical structural properties of copper(I) terminal bridging carbonylsM. Pasquali, C. Floriani, G. Venturi, A. Gaetani-Manfredotti, Chiesi-VillaCite this: J. Am. Chem. Soc. 1982, 104, 15, 4092–4099Publication Date (Print):July 1, 1982Publication History Published online1 May 2002Published inissue 1 July...

cells have been compared with analogous based on , and cathodes. The results demonstrated that this bronze can be ranked among the most promising cathode materials for high rate rechargeable Li cells. This has encouraged attempts aimed at improving electrochemical performance of through substitution V such transition metals as Cr Mo, Na. None these substituted performed better than parent compound. On other hand, controlled intercalation within layers resulted in an increased interlayer...