Experimental and Theoretical Studies of Tetramethoxy-p-benzoquinone: Infrared Spectra, Structural and Lithium Insertion Properties (Articolo in rivista)

Type
Label
  • Experimental and Theoretical Studies of Tetramethoxy-p-benzoquinone: Infrared Spectra, Structural and Lithium Insertion Properties (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1039/c3ra41974f (literal)
Alternative label
  • Gaëtan Bonnard, Anne-Lise Barrès, Yann Danten, Damian G. Allis, Olivier Mentré, Daniele Tomerini, Carlo Gatti, Ekaterina I. Izgorodina, Philippe Poizot and Christine Frayret (2013)
    Experimental and Theoretical Studies of Tetramethoxy-p-benzoquinone: Infrared Spectra, Structural and Lithium Insertion Properties
    in RSC advances
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Gaëtan Bonnard, Anne-Lise Barrès, Yann Danten, Damian G. Allis, Olivier Mentré, Daniele Tomerini, Carlo Gatti, Ekaterina I. Izgorodina, Philippe Poizot and Christine Frayret (literal)
Pagina inizio
  • 19081 (literal)
Pagina fine
  • 19096 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 3 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 16 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [ 1 ] Univ Picardie, CNRS, LRCS, UMR 7314, F-80039 Amiens, France [ 2 ] Univ Nantes, CNRS, IMN, UMR 6502, F-44322 Nantes, France [ 3 ] CNRS, ISM, UMR 5255, F-33405 Talence, France [ 4 ] Syracuse Univ, Dept Chem, Syracuse, NY 13244 USA [ 5 ] UST Lille, ENSC Lille, UCCS, Equipe Chim Solide,CNRS,UMR 8181, F-59655 Villeneuve Dascq, France [ 6 ] CNR, ISTM, I-20133 Milan, Italy [ 7 ] Monash Univ, Sch Chem, Clayton, Vic 3800, Australia [ 8 ] CNRS, Reseau Stockage Electrochim Energie RS2E, FR 3459, F-75700 Paris, France (literal)
Titolo
  • Experimental and Theoretical Studies of Tetramethoxy-p-benzoquinone: Infrared Spectra, Structural and Lithium Insertion Properties (literal)
Abstract
  • In the search for low-polluting electrode materials for batteries, the use of redox-active organic compounds represents a promising alternative to conventional metal-based systems. In this article we report a combined experimental and theoretical study of tetramethoxy-p-benzoquinone (TMQ). In carbonate-based electrolytes, electrochemical behaviour of this compound is characterized by a reversible insertion process located at approximately 2.85 V vs. Li+/Li-0. This relatively high potential reactivity, coupled with our effort to develop computational methodologies in the field of organic electrode materials, prompted us to complement these experimental data with theoretical studies performed using density functional theory (DFT). Single crystals of TMQ were synthesized and thoroughly characterized showing that this quinonic species crystallised in the P2(1)/n space group. The experimental crystal structure of TMQ was then used to assess various DFT methods. The structural features and vibrational spectra were thus predicted by using as a whole five common density functionals (PBE, LDA, revPBE, PBEsol, B3PW91) with and without a semi-empirical correction to account for the van der Waals interactions using either Grimme's (DFT-D2) or Tkatchenko-Scheffler (TS) scheme. The most reliable combination of the DFT functional and the explicit dispersion correction was chosen to study the Li-intercalated molecular crystal (LiTMQ) with the view of indentifying Li insertion sites. A very close agreement with the experiment was found for the average voltage by using the most stable relaxed hypothetical LiTMQ structure. Additionally, a comparison of vibrational spectra gained either for TMQ molecule and its dimer in gas phase or through periodic calculation was undertaken with respect to the experimentally measured infrared spectra. The topological features of the bonds were also investigated in conjunction with estimates of net atomic charges to gain insight into the effect of chemical bonding and intermolecular interaction on Li intercalation. Finally, pi-electron delocalization of both quinone and alkali salts of p-semiquinone were determined using the Harmonic Oscillator model of Aromaticity (HOMA) or aromatic fluctuation index (FLU) calculations (literal)
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