S
1
Supporting Information
for:
Reducing
V
oltage
H
ysteresis in Li
-
rich
S
ulfide
C
athodes by
Incorporation o
f Mn
Xiaotong Li,
†
Seong Shik Kim,
†
Michelle D. Qian,
†
Eshaan S. Patheria,
†
Jessica L. Andrews,
‡
Colin T.
Morrell,
†
Brent C. Melot
‡
,
§
and Kimberly See
*,
†
†
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena,
California
91125, United States
‡
Department of Chemistry, University of Southern California, Los Angeles,
California 90089,
United States
§
Department of Chemical Engineering and Materials Science, University of Southern California, Los
Angeles, California 90089, USA
S
2
Figure S
1
.
XRD patterns of
Li
1.33
–
2
y
/
3
Ti
0.67
–
y
/
3
Mn
y
S
2
(
y
= 0
–
0.5)
series, with refinement and difference
traces. (a)
y
= 0, (b)
y
= 0.1,
(c)
y
= 0.2,
(d)
y
= 0.3,
(e)
y
= 0.4 and (f)
y
= 0.5. The tick marks indicate the
Bragg reflections of the phases.
Figure S
2
.
Theoretical capacity (considering total Li extraction) compared with experimental first
discharge capacity (
C
/10) and the capacity expected from cation Mn
2+/3+
and
Mn
2+/
4
+
redox.
S
3
Figure S3.
The
average
vo
ltage of
the
plateau region
during galv
anostatic
cycling
at C/10
for
Li
1.13
Ti
0.57
Mn
0.3
S
2
.
S
4
Figure S
4
.
O
perando
XRD of
Li
1.13
Ti
0.57
Mn
0.3
S
2
in (a) 2
θ
= 13
–
17
°
,
(
b) 2
θ
= 33
–
38
°
and (c) full
measured range.
S
5
Figure S
5
.
(a) Comparison of the galvanostatic cycling for the operando cell and the cell reassembled ex
-
situ after 7 days for
Li
1.13
Ti
0.57
Mn
0.3
S
2
, as well as the operando cell for Li1.25Ti0.75S2. (b) Comparison of
the XRD patterns for the operando and ex
-
situ cells.