Title:
ELECTROLYTE FOR ELECTROCHEMICAL DEVICE AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/217043
Kind Code:
A1
Abstract:
The present invention relates to an electrolyte for an electrochemical device and a preparation method therefor and, more specifically, to an electrolyte for an electrochemical device and a preparation method therefor, the electrolyte being applicable to an electrochemical device which comprises a first electrode, a second electrode spaced from the first electrode, and an electrolyte filled between the first electrode and the second electrode, and comprising a carbon quantum dot ionic compound in the form of salts of metal cations and anions of carbon quantum dots having an average diameter within the range of 2-12 nanometers (nm) and having a surface charge of at most -20 mV. The electrolyte for an electrochemical device according to the present invention is configured such that: owing to the very low dissociation energy of anions and cations, ionic conductivity is improved; as the movement speed of the anions is very slow in comparison with the metal cations, constructing an electrochemical device based on the movement of the metal cations only is possible; and owing to the high polarizability of the ions and the high thermochemical/electrochemical stability of the anions, a side reaction does not occur during the operation of the device, and thus the stability and reliability of the electrochemical device can be significantly improved.
Inventors:
SHIN IK SOO (KR)
Application Number:
PCT/KR2018/005922
Publication Date:
November 29, 2018
Filing Date:
May 24, 2018
Export Citation:
Assignee:
SHIN IK SOO (KR)
International Classes:
H01B1/12; H01M10/0568
Domestic Patent References:
| WO2010083041A1 | 2010-07-22 |
Foreign References:
| KR20150047326A | 2015-05-04 | |||
| US20120077080A1 | 2012-03-29 | |||
| US20130059174A1 | 2013-03-07 | |||
| KR20150004124A | 2015-01-12 | |||
| KR20110003505A | 2011-01-12 | |||
| US5569560A | 1996-10-29 | |||
| KR20150052008A | 2015-05-13 |
Other References:
HUANG, JIA-QI ET AL.: "Permselective Graphene Oxide Membrane for Highly Siableand Anti-self-discharge Lithium Sulfur Batteries", ACS NANO, vol. 9, no. 3, 24 March 2015 (2015-03-24), pages 3002 - 3011, XP055562683
GUO, WEI ET AL.: "B io-inspired Two-dimensional Nanofluidic Generators Based on a Layered Graphene Hydrogel Membrane", ADVANCED MATERIALS, vol. 25, no. 42, November 2013 (2013-11-01), pages 6064 - 6068, XP055562686
See also references of EP 3633687A4
NJ DUDNEY, J. POWER SOURCES, vol. 89, 2000, pages 17
G. LEFTHERIOTISS. PAPAEFTHIMIOUP. YIANOULIS, SOLAR ENERGY MATERIALS AND SOLAR CELLS, vol. 83, 2004, pages 115
NUGENT, J.L. ET AL., ADV. MATER., vol. 22, 2010, pages 3677
LU, Y. ET AL., J. MATER. CHEM., vol. 22, 2012, pages 4066
CHAEFER, J.L. ET AL., J. MATER. CHEM., vol. 21, 2011, pages 10094
"Graphene quantum dots as the electrolyte for solid state supercapacitors", SCI. REP., vol. 6, 2015, pages 19292
GUO, WEI ET AL.: "B io-inspired Two-dimensional Nanofluidic Generators Based on a Layered Graphene Hydrogel Membrane", ADVANCED MATERIALS, vol. 25, no. 42, November 2013 (2013-11-01), pages 6064 - 6068, XP055562686
See also references of EP 3633687A4
NJ DUDNEY, J. POWER SOURCES, vol. 89, 2000, pages 17
G. LEFTHERIOTISS. PAPAEFTHIMIOUP. YIANOULIS, SOLAR ENERGY MATERIALS AND SOLAR CELLS, vol. 83, 2004, pages 115
NUGENT, J.L. ET AL., ADV. MATER., vol. 22, 2010, pages 3677
LU, Y. ET AL., J. MATER. CHEM., vol. 22, 2012, pages 4066
CHAEFER, J.L. ET AL., J. MATER. CHEM., vol. 21, 2011, pages 10094
"Graphene quantum dots as the electrolyte for solid state supercapacitors", SCI. REP., vol. 6, 2015, pages 19292
Attorney, Agent or Firm:
DYNE PATENT & LAW FIRM (KR)
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