Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Y Piffard"'
Autor:
Régis Mercier, Cristina Iojoiu, F. Chabert, J. Salomon, Hervé Galiano, Y. Piffard, J.-Y. Sanchez, Manuel Maréchal, N. El Kissi
Publikováno v:
Electrochimica Acta
Electrochimica Acta, 2007, 53 (4), pp. 1584-1595. ⟨10.1016/j.electacta.2007.04.022⟩
HAL
Electrochimica Acta, Elsevier, 2007, 53 (4), pp. 1584-1595. ⟨10.1016/j.electacta.2007.04.022⟩
Electrochimica Acta, Elsevier, 2007, 53 (Issue 4), pp.1584-1595
Electrochimica Acta, 2007, 53 (4), pp. 1584-1595. ⟨10.1016/j.electacta.2007.04.022⟩
HAL
Electrochimica Acta, Elsevier, 2007, 53 (4), pp. 1584-1595. ⟨10.1016/j.electacta.2007.04.022⟩
Electrochimica Acta, Elsevier, 2007, 53 (Issue 4), pp.1584-1595
International audience; The paper deals with the use of extrusion to process PEMFC filled and unfilled membranes. Several routes including the sulfonation of filled and unfilled extruded membranes and the extrusion of filled and unfilled ionomers are
Publikováno v:
Journal of Chemical Sciences. 115:33-40
In this paper we report the hydrothermal synthesis and characterisation of a new ethylenediammonium intercalated vanadyl phosphate, (H3NCH2CH2NH3)0.5 [V0.32 4+V0.68 5+O2PO4P(OH)2 0.44]. The phase purity of the solid was established using powder X-ray
Publikováno v:
Electrochimica Acta. 47:1153-1161
The electrochemical behavior of the three new vanadium oxides MyH1−yV3VO8 (M=Li, Na, K; y=0.6–0.9) towards lithium insertion was studied. For each compound, the main insertion phenomena, and the lithium amount which can be inserted, were determin
Publikováno v:
Journal of Physics and Chemistry of Solids. 62:1447-1455
The electrochemical oxidation of aqueous solutions of mixtures of VOSO 4 and MSO 4 (M=Ni, Cu or Mn) leads to solid deposits on the electrode, of general formulation M x V 2 O 5+ y . n H 2 O. These compounds present great similarities with the layered
Publikováno v:
Electrochimica Acta. 45:197-214
The electrochemical oxidation of vanadyl cations in aqueous solution leads to a solid deposit on the working electrode, called electrolytic vanadium oxide (e-V2O5). The electrodeposition reaction occurs in two steps including an oxidation into solubl
Publikováno v:
Journal of Power Sources. :656-660
The first Li insertion into various γ-MnO 2 compounds, characterized by their rates of De Wolff and microtwinning defects, and the reversible Li intercalation process into the resulting γ-Li x MnO 2 materials have been investigated. The first Li in
Autor:
D. Foscallo, A. Denoyelle, J.-Y. Sanchez, D Delabouglise, G Vitter, M Vaujany, Y. Piffard, C. Poinsignon, B. Baradie, N Bestaoui
Publikováno v:
Journal of Power Sources. 74:8-16
Dispersion of submicronic particles of phosphatoantimonic acid fillers (H3) with a 4.3 H + /kg (4.3 eq/kg) cationic exchange capacity (cec), in a solution of sulfonated polysulfone (PSS) of 1.07 H + /kg gives viscous suspension allowing the `filled'
'Chimie douce' synthesis and electrochemical properties of amorphous and crystallized LiNiVO4 vs. Li
Autor:
E. Baudrin, Loic Dupont, S. Denis, Jean-Marie Tarascon, Y Piffard, Dominique Guyomard, F Orsini, M. Touboul
Publikováno v:
Solid State Ionics. 107:123-133
Amorphous LiNiVO 4 has been synthesized by a new `chimie douce' method, which consists of a precipitation reaction occurring at a well-defined pH. This new amorphous lithiated vanadate was shown, by means of thermal analyses and X-ray powder diffract
Publikováno v:
Journal of Power Sources. 68:692-697
The crystallized precursors LiMVO 4 ( M = Co, Ni, Cd, Zn) are irreversibly transformed to lithiated amorphous oxides Li x MVO 4 (x close to 8) during the first Li insertion in a lithium battery. Under low rate, these amorphous oxides cycle large amou
Publikováno v:
Journal of Power Sources. 68:698-703
MnV 2 O 6+δ .nH 2 O (0 < δ < 1) amorphous oxides were prepared by a two-step process including the precipitation of a crystallized precursor MnV 2 O 6 .4H 2 O and its ozonation at tempcratures below 100 °C. Their characterization by spectroscopic