SUPPORTING INFORMATION Polyvinyl Alcohol Borate Gel Polymer ...
SUPPORTING INFORMATION
Polyvinyl Alcohol Borate Gel Polymer Electrolytes Prepared by Electrodeposition
and
Their
Application
in
Electrochemical
Supercapacitors
Mengjin Jiang,†,‡,* Jiadeng Zhu,‡ Chen Chen,‡ Yao Lu,‡ Yeqian Ge,‡ and Xiangwu Zhang‡,*
†
College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
‡
Fiber and Polymer Science Program, Department of Textiles Engineering, Chemistry and
Science, North Carolina State University, Raleigh, NC 27695-8301, USA
*Corresponding authors: [email protected] (M. Jiang); [email protected] (X. Zhang)
S-1
Figure S1. (a) Photograph of AC electrodes after electrodeposition of PVAB GPEs; and (b) Charge-discharge curves of supercapacitors using PVAB GPEs at current density of 0.1 A g-1. PVAB GPEs were prepared from ED solutions containing 1 M of LiCl, LiNO3 or CaCl2 salt.
S-2
Figure S2. Nyquist plots of the control sample and the supercapacitor using PVAPB GPE prepared from 0.9 M KCl ED solution. The plots were fitted by Z-View 2 using the equivalent circuit model shown in the graph.
S-3
Current(A)
0.02
0.00 -1
1 mV s -1 2 mV s -1 5 mV s -1 10 mV s -1 20 mV s
-0.02
-0.04 0.0
0.2
0.4
0.6
Voltage(V)
0.8
1.0
100
(b)
50
80 40 60 30
Charge Specific Capacitance Discharge Specific Capacitance —— Coulombic Efficiency
20 10
1.2
0 0
2000
4000
6000
8000
40
20
Coulombic Efficiency (%)
(a)
Specific Capacitance(F/g)
60
0.04
0 10000
Cycle Index
Figure S3. (a) CV curves at different scan rates and (b) long-term cycling performance of the supercapacitor using PVAPB GPE prepared from 0.9 M KCl ED solution.
S-4
Table S1. The thickness, ionic conductivity and sheet resistivity of PVA based GPEs
Type
Thickness (µm)
H3PO4-PVA17 KOH-PVA18 H2SO4-gPVAP19 KOH-K3[Fe(CN)6]-PVA20 KOH-PECH-PVA21 LiPVAOB31 LiClO4- SiO2-g-HBPAE/PVA32 PVAPB (this work)
100 90~160 50~70 100~200 6~8
Ionic conductivity/test temperature (mS cm−1 / oC) 3.4 / 30 10 / 25 24.9 / 20 45.56 / 25 1~50 / 25 6.11×10-3 / 25 0.151/25, 1.36 / 100 1.02 / 25
S-5
Sheet resistivity (Ω cm2) 2.9 1.29 0.78~3.93 800~1000 7~130 0.69
Polyvinyl Alcohol Borate Gel Polymer Electrolytes Prepared by Electrodeposition
and
Their
Application
in
Electrochemical
Supercapacitors
Mengjin Jiang,†,‡,* Jiadeng Zhu,‡ Chen Chen,‡ Yao Lu,‡ Yeqian Ge,‡ and Xiangwu Zhang‡,*
†
College of Polymer Science and Engineering, Sichuan University, Chengdu, 610065, China
‡
Fiber and Polymer Science Program, Department of Textiles Engineering, Chemistry and
Science, North Carolina State University, Raleigh, NC 27695-8301, USA
*Corresponding authors: [email protected] (M. Jiang); [email protected] (X. Zhang)
S-1
Figure S1. (a) Photograph of AC electrodes after electrodeposition of PVAB GPEs; and (b) Charge-discharge curves of supercapacitors using PVAB GPEs at current density of 0.1 A g-1. PVAB GPEs were prepared from ED solutions containing 1 M of LiCl, LiNO3 or CaCl2 salt.
S-2
Figure S2. Nyquist plots of the control sample and the supercapacitor using PVAPB GPE prepared from 0.9 M KCl ED solution. The plots were fitted by Z-View 2 using the equivalent circuit model shown in the graph.
S-3
Current(A)
0.02
0.00 -1
1 mV s -1 2 mV s -1 5 mV s -1 10 mV s -1 20 mV s
-0.02
-0.04 0.0
0.2
0.4
0.6
Voltage(V)
0.8
1.0
100
(b)
50
80 40 60 30
Charge Specific Capacitance Discharge Specific Capacitance —— Coulombic Efficiency
20 10
1.2
0 0
2000
4000
6000
8000
40
20
Coulombic Efficiency (%)
(a)
Specific Capacitance(F/g)
60
0.04
0 10000
Cycle Index
Figure S3. (a) CV curves at different scan rates and (b) long-term cycling performance of the supercapacitor using PVAPB GPE prepared from 0.9 M KCl ED solution.
S-4
Table S1. The thickness, ionic conductivity and sheet resistivity of PVA based GPEs
Type
Thickness (µm)
H3PO4-PVA17 KOH-PVA18 H2SO4-gPVAP19 KOH-K3[Fe(CN)6]-PVA20 KOH-PECH-PVA21 LiPVAOB31 LiClO4- SiO2-g-HBPAE/PVA32 PVAPB (this work)
100 90~160 50~70 100~200 6~8
Ionic conductivity/test temperature (mS cm−1 / oC) 3.4 / 30 10 / 25 24.9 / 20 45.56 / 25 1~50 / 25 6.11×10-3 / 25 0.151/25, 1.36 / 100 1.02 / 25
S-5
Sheet resistivity (Ω cm2) 2.9 1.29 0.78~3.93 800~1000 7~130 0.69
