Showing papers by "Ganesan Ravi published in 2006"
TL;DR: In this paper, composite polymer electrolyte (CPE) membranes, comprising of poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP), aluminum oxyhydroxide, (AlO[OH]n) of two different particle sizes 7μm/14nm and LiN(CF3SO2)2 as lithium salt were prepared using solution casting technique.
204 citations
TL;DR: In this article, composite polymer electrolyte (CPE) membranes, comprising poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP), aluminum oxyhydroxide (AlO[OH]n) of two different sizes 7μm/14nm and LiN(C2F5SO2)2 as the lithium salt were prepared using a solution casting technique.
92 citations
TL;DR: In this article, a new nonlinear optical material glycine potassium sulphate (GPS) has been synthesized and optical quality crystals were grown from aqueous solution, which has positive temperature coefficient revealed from the solubility studies.
29 citations
TL;DR: In this article, composite polymer electrolytes (CPE electrolytes) with nano-sized fillers were used to enhance the ionic conductivity and the compatibility of composite poly(vinylidene fluoride-hexafluoropropylene) (PVdF-HFP).
Abstract: Composite polymer electrolytes (CPE), comprising poly(vinylidene fluoride–hexafluoropropylene) (PVdF–HFP), aluminum oxyhydroxide, (AlO[OH]n – of 40 nm and 7 μm) as filler and LiN(C2F5SO2)2 or LiClO4 as lithium salt were prepared using a solution casting technique. The membranes were subjected to XRD, impedance spectroscopy, compatibility and transport number studies. The incorporation of nanofiller greatly enhanced the ionic conductivity and the compatibility of the composite polymer electrolyte. The electrochemical properties of CPE with nano sized fillers are better than those of micron size. Charge- discharge studies of Li Cr0.01Mn1.99O4/CPE/Li cells were made at 70 °C and are discussed.
25 citations
TL;DR: In this article, the ionic conductivity, thermal stability and lithium transference number have been investigated in composite polymer electrolytes (CPE) of poly(vinylidene fluoride - hexafluoropropylene) (PVDF-HFP) incorporating nano fillers of AlO(OH) n or γ-Al 2 O 3, with LiClO 4 as salt.
Abstract: The ionic conductivity, thermal stability and lithium transference number have been investigated in composite polymer electrolytes (CPE) of poly(vinylidene fluoride - hexafluoropropylene) (PVDF-HFP) incorporating nano fillers of AlO(OH) n or γ-Al 2 O 3 , with LiClO 4 as salt. The compatibility of the composite polymer electrolyte with lithium metal anode has also been studied. The effect of particle size on the compatibility of Li/ CPE/ Li symmetric cells has also been analyzed.
22 citations
TL;DR: In this paper, the effect of Mn doping on the switching properties has been analyzed and a uniform segregation of Mn throughout the crystal was obtained, showing that Mn doping decreases the Curie temperature while the absorption edge shifts towards the longer wavelength region.
4 citations
TL;DR: In this article, the effect of Mn doping on the switching properties of Niobate crystal has been analyzed and improved sensitivity, dynamic range and lifetime of the hologram for the doped crystal have been determined.
Abstract: Pure and Mn doped single domain near stoichiometric lithium niobate crystals have been grown by top seeded solution growth from 55 mol% Li solution. A uniform segregation of Mn throughout the crystal was obtained. Doping concentration decreases the Curie temperature while the absorption edge shift towards the longer wavelength region. Two color holographic recording was examined in Mn doped samples. Improved sensitivity, dynamic range and lifetime of the hologram for the doped crystal have been determined. The effect of Mn doping on the switching properties has been analyzed.
1 citations