Title:
ELECTROLYTE COMPOSITION FOR HYBRID LITHIUM REDOX FLOW BATTERY, HAVING IMPROVED IONIC CONDUCTIVITY AND COMPRISING ESTER GROUP-SUBSTITUTED IONIC LIQUID
Document Type and Number:
WIPO Patent Application WO/2020/204286
Kind Code:
A1
Abstract:
Disclosed in the present invention is an electrolyte composition for a hybrid lithium redox flow battery, having improved ionic conductivity and comprising an ester group-substituted ionic liquid. An electrolyte composition according to the present invention improves ionic conductivity by comprising both TEMPO or acetamido-TEMPO and an ionic liquid substituted with a specific ester group, thereby enabling a hybrid lithium redox flow battery having a high energy density to be implemented. A hybrid lithium redox flow battery including an electrolyte composition, according to the present invention, can have a discharge voltage and an energy density that are higher than those of a conventional hybrid lithium redox flow battery so as to have high utility as a large-scale energy storage device with high output and high durability, and ensures long-term charge/discharge stability so as to have excellent battery life characteristics.
Inventors:
KIM BYEONG SU (KR)
JOO SO KYOUNG (KR)
CHOI HYUCK (KR)
KIM WAN JOO (KR)
KIM MI JUNG (KR)
JOO SO KYOUNG (KR)
CHOI HYUCK (KR)
KIM WAN JOO (KR)
KIM MI JUNG (KR)
Application Number:
PCT/KR2019/013180
Publication Date:
October 08, 2020
Filing Date:
October 08, 2019
Export Citation:
Assignee:
CHEMTECH RES INCORPORATION (KR)
International Classes:
H01M8/18; H01M4/38; H01M4/90; H01M12/08
Foreign References:
| KR20190012413A | 2019-02-11 |
Other References:
WEI, X.: "TEMPO-Based Catholyte for High-Energy Density Nonaqueous Redox Flow Batteries", ADV. MATER., 2014, XP055238452
BARHDADI, R.: "The electrochemistry of TEMPO-mediated oxidation of alcohols in ionic liquid", J. APPL. ELECTROCHEM., 2007, pages 723 - 728, XP019502138, DOI: 10.1007/s10800-007-9307-3
LEE, J. S.: "Ionic liquids containing an ester group as potential electrolytes", ELECTROCHEMISTRY COMMUNICATIONS, 2006, XP028041462
MILSHTEIN, J.: "4-acetamido-2,2,6,6-tetramethylpiperidine-1-oxyl as a model organic redox active compound for nonaqueous redox flow batteries", JOURNAL OF POWER SOURCES, 2016, XP032905759
BARHDADI, R.: "The electrochemistry of TEMPO-mediated oxidation of alcohols in ionic liquid", J. APPL. ELECTROCHEM., 2007, pages 723 - 728, XP019502138, DOI: 10.1007/s10800-007-9307-3
LEE, J. S.: "Ionic liquids containing an ester group as potential electrolytes", ELECTROCHEMISTRY COMMUNICATIONS, 2006, XP028041462
MILSHTEIN, J.: "4-acetamido-2,2,6,6-tetramethylpiperidine-1-oxyl as a model organic redox active compound for nonaqueous redox flow batteries", JOURNAL OF POWER SOURCES, 2016, XP032905759
Attorney, Agent or Firm:
CHO, Youngshin (KR)
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