Search Results - "Julien, C. M"

WS2 Quantum Dots on e‑Textile as a Wearable UV Photodetector: How Well Reduced Graphene Oxide Can Serve as a Carrier Transport Medium? by Abid, Sehrawat, Poonam, Julien, C. M, Islam, S. S

“…We document the fabrication and investigations of a novel photodetector based on a WS2 quantum dots and reduced graphene oxide (RGO) (WS2-QDs/RGO)…”
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Safe and fast-charging Li-ion battery with long shelf life for power applications by Zaghib, K., Dontigny, M., Guerfi, A., Charest, P., Rodrigues, I., Mauger, A., Julien, C.M.

“…We report a Li-ion battery that can be charged within few minutes, passes the safety tests, and has a very long shelf life. The active materials are…”
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New Lithium Metal Polymer Solid State Battery for an Ultrahigh Energy: Nano C‑LiFePO4 versus Nano Li1.2V3O8 by Hovington, P, Lagacé, M, Guerfi, A, Bouchard, P, Mauger, A, Julien, C. M, Armand, M, Zaghib, K

“…Novel lithium metal polymer solid state batteries with nano C-LiFePO4 and nano Li1.2V3O8 counter-electrodes (average particle size 200 nm) were studied for the…”
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Review and analysis of nanostructured olivine-based lithium recheargeable batteries: Status and trends by Zaghib, K., Guerfi, A., Hovington, P., Vijh, A., Trudeau, M., Mauger, A., Goodenough, J.B., Julien, C.M.

“…LiFePO4 has emerged as the winning cathode material for a new generation of Li-ion batteries that are increasingly used for hybrid and electric vehicles, due…”
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Polypyrrole-covered MnO2 as electrode material for supercapacitor by Bahloul, A., Nessark, B., Briot, E., Groult, H., Mauger, A., Zaghib, K., Julien, C.M.

“…γ-MnO2 has been synthesized by hydrothermal process, and studied as electrode material in aqueous asymmetric super-capacitor. We studied the blend formed by…”
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Characterization of Na-based phosphate as electrode materials for electrochemical cells by Zaghib, K., Trottier, J., Hovington, P., Brochu, F., Guerfi, A., Mauger, A., Julien, C.M.

“…► Electrochemical features of both maricite and olivine NaFePO 4. ► Full insertion of Na achieved at 1.7 V, capacity retention of 147 mAh g −1 in olivine. ► Na…”
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Structural Stability and Phase Transitions in WO3 Thin Films by Ramana, C. V, Utsunomiya, S, Ewing, R. C, Julien, C. M, Becker, U

“…Tungsten oxide (WO3) thin films have been produced by KrF excimer laser (λ = 248 nm) ablation of bulk ceramic WO3 targets. The crystal structure, surface…”
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Electronic, Optical, and Magnetic Properties of LiFePO4:  Small Magnetic Polaron Effects by Zaghib, K, Mauger, A, Goodenough, J. B, Gendron, F, Julien, C. M

“…The electronic structure of LiFePO4 and delithiated FePO4 is revisited in the light of the previous calculations taking into account the coulomb correlation…”
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Lattice vibrations of manganese oxides: Part I. Periodic structures by Julien, C.M, Massot, M, Poinsignon, C

“…Raman scattering (RS) and Fourier transform–infrared (FT–IR) spectroscopy have been applied to the structural characterisation of manganese dioxides (MDOs). A…”
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Surface Effects on the Physical and Electrochemical Properties of Thin LiFePO4 Particles by Zaghib, K, Mauger, A, Gendron, F, Julien, C. M

“…The structure of LiFePO4 particles prepared by a new milling route has been investigated, with emphasis on surface effects found to be important for such small…”
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Enhanced thermal safety and high power performance of carbon-coated LiFePO4 olivine cathode for Li-ion batteries by Zaghib, K., Dubé, J., Dallaire, A., Galoustov, K., Guerfi, A., Ramanathan, M., Benmayza, A., Prakash, J., Mauger, A., Julien, C.M.

“…The carbon-coated LiFePO4 Li-ion oxide cathode was studied for its electrochemical, thermal, and safety performance. This electrode exhibited a reversible…”
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Lithium intercalated compounds: Charge transfer and related properties by Julien, C.M.

“…Numerous channel- or tunnel-structured compounds are interesting materials in which lithium intercalation occurs primarily without destruction of the host…”
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In situ Scanning electron microscope study and microstructural evolution of nano silicon anode for high energy Li-ion batteries by HOVINGTON, P, DONTIGNY, M, GUERFI, A, TROTTIER, J, LAGACE, M, MAUGER, A, JULIEN, C. M, ZAGHIB, K

“…In situ and ex situ scanning electron microscopy of nano Si and SiO anode particles was carried out during the first cycles, and at various stages of charge…”
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Nonstoichiometric LiFePO4: Defects and Related Properties by Axmann, P., Stinner, C., Wohlfahrt-Mehrens, M., Mauger, A., Gendron, F., Julien, C. M.

“…Deviation from ideal stoichiometry of LiFePO4 has been investigated. Any attempt to increase the Li concentration of samples prepared either by the precursor…”
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An improved high-power battery with increased thermal operating range: C–LiFePO4//C–Li4Ti5O12 by Zaghib, K., Dontigny, M., Guerfi, A., Trottier, J., Hamel-Paquet, J., Gariepy, V., Galoutov, K., Hovington, P., Mauger, A., Groult, H., Julien, C.M.

“…The carbon-coated LiFePO4 and C–Li4Ti5O12 particles of 90 nm in diameter have been tested as active elements of electrodes of Li-ion batteries. The 18650-size…”
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Synthesis of pure phase disordered LiMn1.45Cr0.1Ni0.45O4 by a post-annealing method by Liu, D., Hamel-Paquet, J., Trottier, J., Barray, F., Gariépy, V., Hovington, P., Guerfi, A., Mauger, A., Julien, C.M., Goodenough, J.B., Zaghib, K.

“…A post-annealing strategy at 600 °C was used to modify the oxygen deficiency during synthesis of a spinel LiMn1.45Cr0.1Ni0.45O4 cathode for lithium-ion…”
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XPS and Raman spectroscopic characterization of LiMn2O4 spinels by Ramana, C. V., Massot, M., Julien, C. M.

“…Surface analysis of lithium manganese oxides synthesized by the melt–impregnation method has been made by x‐ray photoelectron spectroscopy. These results…”
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Structural, magnetic and electrochemical properties of lithium iron orthosilicate by Zaghib, K., Ait Salah, A., Ravet, N., Mauger, A., Gendron, F., Julien, C.M.

“…We report the structural and electronic characterization of Li 2FeSiO 4 synthesized by solid-state reaction. X-ray diffraction, Raman scattering, Fourier…”
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Local structure and redox energies of lithium phosphates with olivine- and Nasicon-like structures by Salah, A. Ait, Jozwiak, P., Garbarczyk, J., Benkhouja, K., Zaghib, K., Gendron, F., Julien, C.M.

“…An experimental relationship between local structure and electrochemical properties is established for lithium metal phosphates LiMePO 4 (Me = Fe, Co, Mn),…”
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Magnetic properties of LixNiyMnyCo1−2yO2 (0.2≤1−2y≤0.5, 0≤x≤1) by Mauger, A., Gendron, F., Julien, C.M.

“…► Ni2+, Mn4+ ion distribution in LiNiyMnyCo1−2yO2 is investigated. ► The cation mixing is determined as a function of the Co concentration. ► The lithiation…”
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