Facile fabrication of thermal-control ionic liquid compound based on undecatungstophosphoindic polyoxometalate with fast ionic conductivity

2016 ◽  
Vol 40 (9) ◽  
pp. 7923-7927 ◽  
Author(s):  
Xuefei Wu ◽  
Xuhua Zhou ◽  
Qingyin Wu ◽  
Wenfu Yan
Keyword(s):  
Activation Energy ◽  
Ionic Liquid ◽  
Phase Transformation ◽  
Ionic Conductivity ◽  
Layer Structure ◽  
Thermal Control ◽  
Facile Fabrication ◽  
Gel Phase ◽  
Conductive Properties ◽  
Reversible Phase

Thermal-depended conductive properties of the ternary-POM-based layer-structure ionic liquid [TOAMe]4[In(H2O)PW11O39] was investigated. It shows fast ionic conductivity as high as 2.2 × 10−3 S cm−1 at 90 °C with the conductive activation energy of 30.19 kJ mol−1, which is related to its state, obviously increasing during the reversible phase transformation from a quasi-solid-state gel phase to an isotropic sol phase.

Reversible phase transformation gel-type ionic liquid compounds based on tungstovanadosilicates

2016 ◽  
Vol 660 ◽  
pp. 17-22 ◽  
Author(s):  
Tianpei Huang ◽  
Zhirong Xie ◽  
Qingyin Wu ◽  
Wenfu Yan
Keyword(s):  
Ionic Liquid ◽  
Phase Transformation ◽  
Reversible Phase

scholarly journals Influence of Lithium Content on the Structure and Ionic Conductivity of Perovskite \(\mbox{La}_{(2/3) - x}\mbox{Li}_{3x}\mbox{TiO}_{3}\) Made by Double Mechanical Alloying Method

2014 ◽  
Vol 24 (3S1) ◽  
pp. 33-39
Author(s):  
Le Dinh Trong
Keyword(s):  
Activation Energy ◽  
Ionic Conductivity ◽  
Grain Boundary ◽  
Mechanical Alloying ◽  
Room Temperature ◽  
Lithium Content ◽  
Boundary Conductivity ◽  
Structural Modifications ◽  
Li Ion ◽  
Conductive Properties

Perovskite La\(_{(2/3) - x}\)Li\(_{3x}\)TiO\(_{3}\) samples with 0.06 \( \leq x \leq 0.15\) were prepared by a double mechanical alloying method. Structure and Li$^{ + }$-ion conductive properties of the La\(_{(2 / 3) - x}\)Li\(_{3x}\)TiO\(_{3}\) samples were investigated. Most of the analyzed perovskite samples exhibit a double unit cell. In these samples, a change of symmetry from tetragonal to orthorhombic is observed for sample with lithium content x = 0.06. Structural modifications were obtained mainly due to the cation vacancies ordering along the c-axis, which disappeared gradually when the lithium content increased. At room temperature, the maximum values of grains and grain boundaries conductivities of the La\(_{(2 / 3) - x}\)Li\(_{3x}\)TiO\(_{3}\) samples were found to be of \(1.5\times 10$^{ - 3}\) S/cm and \(5.8 \times 10^{ - 5}\) S/cm, respectively. The temperature dependence of ionic conductivity obeyed a non-Arrhenius behaviour. At temperature from 30 to 125\(^{\circ}\)C, the activation energy for grain and grain-boundary conductivity was found to be of $\sim $ 0.23 eV and $\sim $ 0.32 eV, respectively.

A reversible phase transformation monovanadium-substituted Keggin polyoxometalate-based ionic liquid

2014 ◽  
Vol 121 ◽  
pp. 159-161 ◽  
Author(s):  
Yunyan Li ◽  
Tianpei Huang ◽  
Qingyin Wu ◽  
Hong Ding ◽  
Wenfu Yan ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Phase Transformation ◽  
Keggin Polyoxometalate ◽  
Reversible Phase

scholarly journals Joint-Linker Type Ionic Gels Using Polymerizable Ionic Liquid as a Crosslinker via Thiol-Ene Click Reactions

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2844
Author(s):  
Kumkum Ahmed ◽  
Aoi Inagaki ◽  
Naofumi Naga
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Solvent System ◽  
The Novel ◽  
Compression Tests ◽  
Click Reactions ◽  
Ene Reaction ◽  
Good Thermal Stability ◽  
Monomer Content ◽  
Conductive Properties

In this work, we report the synthesis of ion-conductive gels, or ionic gels, via thiol-ene click reactions. The novel gel systems consist of the multifunctional thiol monomers tris[(3-mercaptopropionyloxy)-ethyl]-isocyanurate (TEMPIC), pentaerythritol tetrakis(3-mercaptopropionate) (PEMP), and dipentaerythritol hexakis(3-mercaptopionate) (DPMP) as joint molecules and bifunctional allyl ionic liquid (IL) as a crosslinker. The thiol-ene reaction was carried out in lithium bis(trifluoromethanesulfonyl)imide (Li-TFSI) in a propylene carbonate (PC) (1 M) solvent system via a photopolymerization process. The chemical structure and mechanical, thermal, and conductive properties of the gels were investigated using Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), compression tests, and impedance spectroscopy, respectively. The mechanical and conductive properties of the ionic gels were found to be largely dependent on the monomer content and functionalities of the joint molecules. TGA revealed good thermal stability of the gels up to 100 °C. An ionic conductivity of 4.89 mS cm−1 was realized at room temperature (298 K) for low-functional thiol monomers, and a further increase in ionic conductivity was observed with an increase in Li+ ion content and temperature.

Thermoregulated polyoxometalate-based ionic-liquid gel electrolytes

RSC Advances ◽  
2015 ◽  
Vol 5 (28) ◽  
pp. 21973-21977 ◽  
Author(s):  
Xuefei Wu ◽  
Tianpei Huang ◽  
Xia Tong ◽  
Zhirong Xie ◽  
Weixiang Chen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Phase Transformation ◽  
Keggin Type ◽  
Gel Electrolytes ◽  
Reversible Phase

Thermoregulated POM-type ionic liquid gels show reversible phase transformation, increasing conductivities. And W-containing compounds have higher conductivity than the Mo-containing one, like the Dawson-type one compared with the Keggin-type one.

scholarly journals In-situ characterization of highly reversible phase transformation by synchrotron X-ray Laue microdiffraction

2016 ◽  
Vol 108 (21) ◽  
pp. 211902 ◽  
Author(s):  
Xian Chen ◽  
Nobumichi Tamura ◽  
Alastair MacDowell ◽  
Richard D. James
Keyword(s):  
Phase Transformation ◽  
In Situ Characterization ◽  
X Ray ◽  
Reversible Phase ◽  
Laue Microdiffraction

Facile fabrication of self-reporting micellar and vesicular structures based on etching-ion exchange strategy of photonic composite spheres of poly(ionic liquid)

Nanoscale ◽  
2021 ◽  
Author(s):  
Ning Gao ◽  
Kang Zhou ◽  
Kai Feng ◽  
Wanlin Zhang ◽  
Jiecheng Cui ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ion Exchange ◽  
Chemical Environment ◽  
Facile Fabrication ◽  
Poly Ionic Liquid

Micellar and vesicular structures capable of sensing and reporting the chemical environment as well as facilely introducing user-defined functions make a vital contribution to constructing versatile compartmentalized systems. Herein, combing...

Sign in / Sign up

Export Citation Format

Share Document