F. Jiménez-Villacorta, J. A. Gallastegui, I. Fina, X. Marti, and J. Fontcuberta
Phys. Rev. B 86, 024420 (2012)
Alexandre Ponrouch,*ac Elena Marchante,ac Matthieu Courty,bc Jean-Marie Tarasconbc and M. Rosa Palac ın*ac
Electrolytes are essential for the proper functioning of any battery technology and the emerging Na-ion technology is no exception. Hence, a major focus on battery research is to identify the most appropriate formulation so as to minimize interface reactions and enhance both cell performances and safety aspects. In order to identify suitable electrolyte formulations for Na-ion chemistry we benchmarked various electrolytes containing diverse solvent mixtures (cyclic, acyclic carbonates, glymes) and Na-based salts having either F-based or perchlorate anions and measured viscosity, ionic conductivity, and thermal and electrochemical stability. The binary EC:PC solvent mixture has emerged as the best solvent formulation and has been used to test the performance of Na/hard carbon cells with both NaClO4 and NaPF6 as dissolved salts. Hard carbon electrodes having reversible capacities of 200 mA h g−1 with decent rate capability and excellent capacity retention (>180 cycles) were demonstrated. Moreover, DSC heating curves demonstrated that fully sodiated hard carbon cycled in NaPF6–EC:PC exhibits the highest exothermic onset temperature and nearly the lowest enthalpy of reaction, thus making this electrolyte most attractive for the development of Na-ion batteries.
Understanding diluted dispersions of superparamagnetic particles under strong magnetic fields: a review of concepts, theory and simulations
Phys. Rev. Lett. 110, 107206 (2013)
C. Rayan Serrao, Jian Liu*, J. T. Heron, G. Singh-Bhalla, A. Yadav, S. J. Suresha, R. J. Paull, D. Yi, J.-H. Chu, M. Trassin, A. Vishwanath, E. Arenholz, C. Frontera, J. Železný, T. Jungwirth, X. Marti and R. Ramesh;
B. Ibarlucea, C. Díez-Gil, I. Ratera, J. Veciana, A. Caballero, F. Zapata, A. Tárraga, P. Molina, S. Demming, S. Büttgenbach, C. Fernández-Sánchez, A. Llobera;
Analyst, 2013, 138, 839–844
Photoemission electron microscopy study of sub-200 nm self-assembled La0.7Sr0.3MnO3 epitaxial islands
Polyanionic Aryl Ether Metallodendrimers Based on Cobaltabisdicarbollide Derivatives. Photoluminescent Properties
E. J. Juárez-Pérez, C. Viñas, F. Teixidor, R. Santillan, N. Farfán, A. Abreu, R. Yépez and R. Núñez* Macromolecules, 2010, 43 (1), pp 150–159 Fluorescent Fréchet-type poly(aryl ether) dendrimers that incorporate the 1,3,5-triphenylbenzene as core molecule and 3, 6, 9, or 12 terminal allyl ether groups have been prepared in very good yield by following the Fr echet convergent approach. Regiospecific hydrosylilation reactions on the allyl ether functions with the cobaltabisdicarbollide derivative Cs[1,10-μ-SiMeH-3,30-Co(1,2-C2B9H10)2] lead to different generations of Fréchet-type polyanioic metallodendrimers decorated with 3, 6, and 9 cobaltabisdicarbollide units. Starting dendrimers exhibit photoluminescence properties at room temperature under ultraviolet irradiation; nevertheless, after functionalization with cobaltabisdicarbollide derivatives, the fluorescence properties are quenched. Products are fully characterized by FTIR, NMR, and UV-vis spectroscopies. For metallodendrimers, the UV-vis absorptions have been a good tool for estimating the experimental number of cobaltabisdicarbollide units peripherally attached to the dendrimeric structure and consequently to corroborate the unified character of the dendrimers. Because of the anionic character of these compounds and the boron-rich content, we actually focus our research on biocompatibility studies and potential applications.
Different Nature of the Interactions between Anions and HAT(CN)6: From Reversible Anion−π Complexes to Irreversible Electron-Transfer Processes (HAT(CN)6 = 1,4,5,8,9,12-Hexaazatriphenylene)
Neutral and Charged Oxygen Vacancies Induce Two-Dimensional Electron Gas Near SiO2/BaTiO3 Interfaces
Dr. Jordi Poater, Prof. Dr. Miquel Solà*, Prof. Dr. Clara Viñas, Prof. Dr. Francesc Teixidor,*
Chemistry - A European Journal, Volume 19, Issue 13, pages 4169–4175
Intramolecular electron transfer in the photodimerisation product of a tetrathiafulvalene derivative in solution and on a surface
Claudia Simao, Marta Mas-Torrent, Vânia André, M. Teresa Duarte, Jaume Veciana, Concepció Rovira;
Chemical Science, 4 (2013) 307-310.
Structural and surface study of calcium glyceroxide, an active phase for biodiesel production under heterogeneous catalysis
M. Heiss, Y. Fontana, A. Gustafsson, G. Wüst, C. Magen, D. D. O'Regan, J. W. Luo, B. Ketterer, S. Conesa-Boj, A. V. Kuhlmann, J. Houel, E. Russo-Averchi, J. R. Morante, M. Cantoni, N. Marzari, J. Arbiol, A. Zunger, R. J. Warburton & A. Fontcuberta i Morral
- Nature Materials (2013)