US 12,068,454 B2
Electrolyte and lithium-sulfur battery comprising same
Yang-Kook Sun, Seoul (KR); and Hee Min Kim, Seoul (KR)
Assigned to IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY), Seoul (KR)
Appl. No. 16/629,236
Filed by IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY), Seoul (KR)
PCT Filed Jul. 11, 2018, PCT No. PCT/KR2018/007841
§ 371(c)(1), (2) Date Jan. 7, 2020,
PCT Pub. No. WO2019/013541, PCT Pub. Date Jan. 17, 2019.
Claims priority of application No. 10-2017-0087833 (KR), filed on Jul. 11, 2017; and application No. 10-2018-0079793 (KR), filed on Jul. 10, 2018.
Prior Publication US 2020/0194834 A1, Jun. 18, 2020
Int. Cl. H01M 10/0567 (2010.01); H01M 4/38 (2006.01); H01M 4/58 (2010.01); H01M 10/052 (2010.01); H01M 10/0568 (2010.01); H01M 10/0569 (2010.01)
CPC H01M 10/0567 (2013.01) [H01M 4/382 (2013.01); H01M 4/5815 (2013.01); H01M 10/052 (2013.01); H01M 10/0568 (2013.01); H01M 10/0569 (2013.01); H01M 2300/0025 (2013.01)] 16 Claims
OG exemplary drawing
 
4. A lithium-sulfur battery, comprising:
a cathode including a sulfur compound, a graphite conductive material, and a binder;
a first electrolyte comprising:
a base electrolyte including lithium salt and an organic solvent;
a first electrolyte additive,
wherein:
the first electrolyte additive includes at least one of indium nitrate or aluminum nitrate;
the organic solvent is at least one of an annular carbonate material, a linear carbonate material, an ether-based material, 1,2-Dimethoxyethane, 1,3-Dioxolane, or dimethyl sulfoxide;
the annular carbonate material includes at least one of ethylene carbonate, propylene carbonate, butylene carbonate, vinylene carbonate, vinyl ethylene carbonate, or fluoroethylene carbonate;
the linear carbonate material includes at least one of dimethyl carbonate, diethyl carbonate, dipropyl carbonate, ethyl methyl carbonate, methyl propyl carbonate, methyl isopropyl carbonate, or ethyl propyl carbonate;
the ether-based material includes at least one of diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, or tetraethylene glycol dimethyl ether; and
the first electrolyte additive is present at a concentration of from 0.01 m to 0.03 m in the first electrolyte; and
an anode including lithium, having an anode protective layer protecting the anode while a charging/discharging operation is performed, the anode protective layer formed from a second electrolyte including a second electrolyte additive at a higher concentration than the first electrolyte additive of the first electrolyte, wherein the second electrolyte additive is different from the first electrolyte additive.