In this study, an ionic liquid incorporated modified MOF was synthesized to serve as an efficient electrolyte system for Li-ion batteries. Further, the MOF (IL) was doped with a lithium salt, lithium bis(triflouromethylsulfonyl) imide (LiTFSI) by a modified procedure. Samples with varying amount of MOF (IL) in ionic liquid were prepared, characterized and evaluated for their electrochemical behavior. A high conductivity in order of 10 −2 -10 −3 Scm −1 at 51 • C and a low activation energy of ion transport was observed in all samples. The systems showed high electrochemical stability to be employed as gel electrolyte in Li ion secondary batteries. These systems showed highly reversible capacity of over 3000 mAhg −1 in the charge-discharge studies carried out after fabricating anodic half-cell composed of Si/electrolyte/Li. These results illustrate the feasibility of the prepared modified MOF (IL) as potential solid state electrolytes for Li ion secondary batteries.
We prepared highly ion conducting polymer electrolytes with a high lithium transference number using organoborane-modified polybenzimidazole and an ionic liquid.
We
have synthesized a series of poly(N-isopropylacrylamide/ionic
liquid) with deposited Au nanoparticles. The size of the nanoparticle
range was varied from 10 to 35 nm, and these were characterized by
transmission electron microscopy analysis. Ionic liquids (IL) were
chosen by varying the polymerizable unit to be both in cationic (allyl)
and anionic (acrylate) moiety. One-pot polymerization was done with N-isopropylacrylamide and IL using ammonium persulphate
as the initiator, to which were added already prepared Au NPs. These
thermally sensitive composites formed, possessed reversible swelling/deswelling
abilities in water, and demonstrated a reversible visible phase transition,
which was detected by differential scanning calorimetric measurements.
The lower critical solution temperature (LCST) showed dependency on
the size of nanoparticles and the IL independently. It was seen that
the LCST of PNIPAM-based composite films can be tuned from 32 °C
to a range of 23–67 °C by choosing the desired Au NP size,
its concentration and kind of IL.
Concurrence of fluoride in groundwater is a serious concern due to their fatal effects. Functionalized hexagonal boron nitride sheets have been combined with nickel hydroxide nanoparticles by one step process...
Chromium(III) complexes of the type Cr(A)(A')2, Cr(A)2(A') and Cr(A)3 have been prepared (where A is either piperidyldithiocarbamate or morpholyldithiocarbamate and A' is glycine or oxine or acetylacetone moiety). The mixed ligand complexes have been characterized by elemental analyses, magnetic susceptibility measurements and thermal studies. The complexes show magnetic moment in the range of 3.5-4.3 B.M. which corresponds to three unpaired electrons. TG studies have also been carried out, in order to study the mode of decomposition of the complexes and to evaluate various kinetic parameters.(-) (-)
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