نتایج جستجو برای: ionic conductivity

تعداد نتایج: 93458  

Journal: :Journal of the American Chemical Society 2015
Yue Deng Christopher Eames Jean-Noël Chotard Fabien Lalère Vincent Seznec Steffen Emge Oliver Pecher Clare P Grey Christian Masquelier M Saiful Islam

Solid electrolytes that are chemically stable and have a high ionic conductivity would dramatically enhance the safety and operating lifespan of rechargeable lithium batteries. Here, we apply a multi-technique approach to the Li-ion conducting system (1-z)Li4SiO4-(z)Li3PO4 with the aim of developing a solid electrolyte with enhanced ionic conductivity. Previously unidentified superstructure and...

Journal: :physical chemistry research 2014
rahmat sadeghi roonak golabiazar

systematic studies on the vapor-liquid equilibria (vle) and conductometric properties of aqueous solutions of model surface-active ionic liquid 1-dodecyl-3-methylimidazolium bromide ([c12mim]br) are performed in the absence and presence of a large series of electrolytes in order to achieve a deeper understanding about the molecular mechanism behind the specific salt effect on the aggregation be...

F. Sadeghzadeh Darabi M. Sadri S. Ahmadvand

Ethylammonium Propionate with high polarity and ionic conductivity was synthesized andcharacterized with 1HNMR and IR. This ionic liquid which is prepared from readily available startingmaterial in high yield shows reasonably high at viscosity and heat stability up to 150 °C. This IonicLiquid is able to dissolve most of organic solvents due to the hydrogen interaction between IonicLiquid and th...

Journal: :Chemical communications 2014
Jie Yang Huiyong Wang Jianji Wang Yue Zhang Zhongjia Guo

A new class of cinnamate-based light-responsive ionic liquids was synthesized and characterized, and these ionic liquids with longer alkyl chains showed a remarkable increase in ionic conductivity under UV light irradiation in aqueous solutions.

Journal: :Chemical communications 2012
Tomoki Ogoshi Naosuke Ueshima Tada-aki Yamagishi Yoshiyuki Toyota Noriyoshi Matsumi

A room-temperature ionic liquid containing macrocyclic compound pillar[5]arene in its core was synthesized. The ionic liquid showed high thermal stability, moderate ionic conductivity and solvent-free complexation ability with the guest tetracyanoethylene.

1996
Amnon Yariv Sergei S. Orlov George A. Rakuljic

We present a theoretical model that describes holographic ionic fixing and storage dynamics in photorefractive crystals. Holographic gratings that are based on charge redistribution inevitably decay because of ionic and electronic conduction. Relevant decay rates and transient hologram field expressions are derived. Ionic gratings are partially screened by trapped electrons on readout. The life...

2015
Ruisi Zhang Yuanfen Chen Reza Montazami

Application of gel polymer electrolytes (GPE) in lithium-ion polymer batteries can address many shortcomings associated with liquid electrolyte lithium-ion batteries. Due to their physical structure, GPEs exhibit lower ion conductivity compared to their liquid counterparts. In this work, we have investigated and report improved ion conductivity in GPEs doped with ionic liquid. Samples containin...

2014
Maarten C. Verbraeken Chaksum Cheung Emmanuelle Suard

With hydrogen being seen as a key renewable energy vector, the search for materials exhibiting fast hydrogen transport becomes ever more important. Not only do hydrogen storage materials require high mobility of hydrogen in the solid state, but the efficiency of electrochemical devices is also largely determined by fast ionic transport. Although the heavy alkaline earth hydrides are of limited ...

Journal: :Chemical communications 2011
Shiguo Zhang Shimin Liu Qinghua Zhang Youquan Deng

A new class of azobenzene-based photoresponsive ionic liquids was prepared and showed reversible modulation of ionic conductivity in specific solvents under alternative UV/visible light irradiation.

Mahdi Moghimi Zand Majid Baniasadi, Mehdi Tafazoli Mohammad Riazat Mohsen Mazrouie

In the present study, the effect of porosity on the cathode microstructure (50:50 wt. % LSM: YSZ) of a Solid Oxide Fuel Cell (SOFC) has been examined. A 3-D finite element method for Mixed Ionic and Electronic Conducting Cathodes (MIEC) is presented to study the effects of porosity on cell performance. Each microstructure was realized using the Monte Carlo approach with the isotropic type of gr...

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