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Ether-bridged dication, ionic liquid electrolyte and charge storage device thereof

a technology charge storage device, which is applied in the direction of organic chemistry, hybrid capacitor electrolytes, etc., can solve the problems of increasing the possibility of problematic occurrence, the volatility of solvents, and the inability of ionic liquid electrolyte to maintain the fluid state, so as to improve the chemical stability enhance the ionic conductivity of ionic liquid electrolyte, and increase the electron density

Inactive Publication Date: 2018-03-15
NAT CHENG KUNG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

The present invention provides an ether-bridged dication and an ionic liquid electrolyte with improved chemical stability and conductivity. Additionally, the ionic liquid electrolyte can be operated at room temperatures or below without the need for additional organic antifreeze agents or solvents. Furthermore, the charge storage device assembled using this electrolyte has a higher potential window and operability in a wide temperature range.

Problems solved by technology

However, the organic solvent generally has a high volatility, which is unstable for electronic components so that the possibility of problematic occurrences is increased; for example, explosion or fire may occur when overheating.
If no organic antifreeze agent or organic solvent is used, the ionic liquid electrolyte cannot maintain its fluid state at low temperatures, especially at temperatures below 5° C., which does not work properly to provide ionic conductivity.

Method used

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  • Ether-bridged dication, ionic liquid electrolyte and charge storage device thereof
  • Ether-bridged dication, ionic liquid electrolyte and charge storage device thereof
  • Ether-bridged dication, ionic liquid electrolyte and charge storage device thereof

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Embodiment Construction

[0028]The structure and the technical means adopted by the present invention to achieve the above and other objects can be best understood by referring to the following detailed description of the preferred embodiments. Furthermore, if there is no specific description in the invention, singular terms such as “a”, “one”, and “the” include the plural number. For example, “a compound” or “at least one compound” may include a plurality of compounds, and the mixtures thereof. If there is no specific description in the invention, “%” means “weight percentage (wt %)”, and the numerical range (e.g., 10%-11% of A) contains the upper and lower limit (i.e., 10%≦A≦11%). If the lower limit is not defined in the range (e.g., less than, or below 0.2% of B), it means that the lower limit may be 0 (i.e., 0%≦B≦0.2%). The proportion of “weight percent” of each component can be replaced by the proportion of “weight portion” thereof. The abovementioned terms are used to describe and understand the prese...

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Abstract

An ether-bridged dication is provided with two monovalent cations bonded via a carbon chain having ether group(s). The ether-bridged dication, monovalent cations, and anions are contained together within an ionic liquid electrolyte which is applied to a charge storage device. The ether-bridged dication, the ionic liquid electrolyte, and the charge storage device have operational abilities at room temperatures or below, and a reachable working potential of 3.5 V.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the priority of Taiwan Patent Application No. 105129628, filed on Sep. 12, 2016, the disclosure of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a dication and an ionic liquid electrolyte, and a charge storage device, and in particular relates to an ether-bridged dication, an ionic liquid electrolyte containing the ether-bridged dication without an organic solvent, and a charge storage device assembled by the ionic liquid electrolyte so that it is workable at a temperature below 0° C.BACKGROUND OF THE INVENTION[0003]An ionic liquid electrolyte is generally composed by monovalent cation or dication together with specific anions and a medium, and applied to a charge storage device such as a capacitor or battery. For ionic conductivity at room temperature or below, the most ionic liquid electrolyte needs an additional organic antifreeze agent; otherwise, an orga...

Claims

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Application Information

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IPC IPC(8): H01G11/60C07D233/64C07C311/48
CPCH01G11/60C07C311/48C07D233/64H01G11/58Y02E60/10Y02E60/13H01G11/62
Inventor TENG, HSISHENGSUN, I-WENHUANG, HSIN-CHIEHYEN, YUNG-CHE
Owner NAT CHENG KUNG UNIV
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