nanotechnology enabled rechargeable li−so battery: another...
TRANSCRIPT
Supporting information for
Nanotechnology enabled rechargeable
Li−SO2 battery: Another approach towards
post lithium-ion battery system
Goojin Jeonga, Hansu Kimb,*, Jong Hwan Parka, Jaehwan Jeona,b, Xing Jinc, Juhye
Songb, Bo-Ram Kimb, Min-Sik Parka, Ji Man Kimc,*, Young-Jun Kima,*
a Advanced Batteries Research Center, Korea Electronics Technology Institute,
Seongnam, 463-816, Republic of Korea
b Department of Energy Engineering, Hanyang University, Seoul, 133-791, Republic
of Korea
c Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Republic of
Korea
Supplementary Fig. S1. SEM images of various carbon materials used in this study:
(a) KB-600JD, (b) OMC, (c) rGO, (d) CS, and (e) MSP-20
Supplementary Fig. S2. (a) N2 adsorption/desorption isotherm and (b) the pore size
distribution of various carbon materials used in this study
0.0 0.5 1.00
500
1000
1500 KB-600JD OMC rGO CS MSP-20
V (c
m3 g
-1)
P/Po
1 10 100
0.00
0.05
0.10
0.15
0.20
Incr
emen
tal p
ore
volu
me
(cm
3 g-1)
Pore size (nm)
KB-600JD OMC rGO CS MSP-20
(a)
(b)
Supplementary Fig. S3. SEM-EDS mapping for the discharged carbon cathode in a
Li–SO2 cell
Supplementary Fig. S4. The SEM images of (a) top-view and (b) cross-section of
the rGO electrode used in this study.
Supplementary Fig. S5. Photo-snapshots of flammability-tests for LiAlCl4⋅xSO2
inorganic electrolyte and 1 M LiPF6 in the mixture of ethylene carbonate (EC) and
ethyl methyl carbonate (EMC) as one of organic-based electrolytes. The electrolyte-
soaked tissue was forced to be contact with an open flame.
Supplementary Fig. S6. Conductivity of LiAlCl4⋅3SO2 electrolyte in comparison
with some conventional organic-based electrolytes (LiTFSI: lithium bis-
trifluoromethanesulfonimide, DME: dimethyl ether, DOL: 1,3-dioxolane, EC:
ethylene carbonate, DMC: dimethyl carbonate).
Supplementary Table S1. Estimation of theoretical energy density of Li–SO2
system
Assuming 3Li + LiAlCl4⋅3SO2 ↔ 3LiCl + LiAlCl(SO2)3 , according to the literature
[10]
Discharge Capacity Specific Energy
Density
(mAh/g) (Wh/kg)
Based on the mass of [catholyte] 219 689
Based on the mass of [discharge products] 207 651
Based on the mass of [discharge products +
carbon] 171 540
1) Capacity based on the mass of carbon cathode: 1000 mAh/g 2) Corresponding carbon mass for the reaction of 1g-catholyte: 0.219 g 3) Operational voltage: 3.15 V