IEC 62830-8:2021

IEC 62830-8 ®
Edition 1.0 2021-10
INTERNATIONAL
STANDARD
Semiconductor devices – Semiconductor devices for energy harvesting and
generation –
Part 8: Test and evaluation methods of flexible and stretchable supercapacitors
for use in low power electronics
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IEC 62830-8 ®
Edition 1.0 2021-10
INTERNATIONAL
STANDARD
Semiconductor devices – Semiconductor devices for energy harvesting and

generation –
Part 8: Test and evaluation methods of flexible and stretchable supercapacitors

for use in low power electronics

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.080.99 ISBN 978-2-8322-1040-1

– 2 – IEC 62830-8:2021 © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
3.1 General terms . 6
3.2 Characteristic parameters . 10
4 Essential ratings and characteristic parameters . 11
4.1 Identification and type . 11
4.2 Limiting values and operating conditions . 11
4.3 Additional information . 12
5 Test method . 12
5.1 General . 12
5.1.1 General . 12
5.1.2 Standard atmospheric conditions for test . 13
5.1.3 Standard atmospheric conditions for measurement . 13
5.2 Flat status . 13
5.2.1 Measurement circuit . 13
5.2.2 Measurement procedure . 14
5.2.3 Essential parameters calculation . 16
5.3 Bending status . 18
5.3.1 General . 18
5.3.2 Test procedure . 19
5.4 Stretching status . 22
5.4.1 General . 22
5.4.2 Test procedure . 23
6 Test reports . 26
Annex A (informative) Classification of supercapacitors and its working principles . 28
A.1 General . 28
A.2 Classification . 28
A.3 Working principles . 28
A.3.1 Electrical double layer capacitor (EDLC) . 28
A.3.2 Pseudocapacitor . 29
A.3.3 Hybrid supercapacitor . 29
Annex B (informative) Endurance test (continuous application of rated voltage at low
or high temperature) . 30
B.1 General . 30
B.2 Test method . 30
B.2.1 Test conditions . 30
B.2.2 Test procedure . 30
B.2.3 Recommendations . 30
Annex C (informative) Other bending testers . 32
C.1 Bending stage using fixed and moving stage . 32
C.2 Bending stage using rotating motor . 32
Annex D (informative) Classification of flexible and stretchable supercapacitor . 34
D.1 Flexible and stretchable supercapacitor with sandwich structure . 34
D.2 Flexible and stretchable supercapacitor with in-planar structure . 34
D.3 Flexible and stretchable supercapacitor with wire-shaped structure . 34
D.4 Flexible textile made by using wire-shape supercapacitor . 35

Bibliography . 36

Figure 1 – Schematic of curvature radius . 10
Figure 2 – Measurement procedure of flexible and stretchable supercapacitor . 13
Figure 3 – Measurement circuit of flexible and stretchable supercapacitor . 14
Figure 4 – Schematic illustration of the voltage-time (V-t) curve of the tested flexible
and stretchable supercapacitor . 15
Figure 5 – Schematic illustration of current-time (I-t) curve of the tested flexible and
stretchable supercapacitor . 15
Figure 6 – Schematic illustration of the voltage-current (V-I) curve of the tested flexible
and stretchable supercapacitor . 16
Figure 7 – Voltage-time curves during ten continuous charging-discharging processes
of flexible and stretchable supercapacitor . 17
Figure 8 – Calculated capacitance retention after certain number of repeated
charging-discharging processes of flexible and stretchable supercapacitor . 18
Figure 9 – Bending method of flexible and stretchable supercapacitor using bending stage . 19
Figure 10 – Test setup for the performance reliability of flexible and stretchable
supercapacitor under bending condition . 20
Figure 11 – Comparison of charging-discharging curves with different curvature values
of a flexible and stretchable supercapacitor . 21
Figure 12 – Capacitance retention of flexible and stretchable supercapacitor under

bending status . 21
Figure 13 – Performacne reliability of flexible and stretchable supercapacitor under
bending status . 22
Figure 14 – Stretching method of flexible and stretchable supercapacitor using
stretching stage . 23
Figure 15 – Test setup for the performance reliability of flexible and stretchable

supercapacitor under stretching condition . 24
Figure 16 – Comparison of charging-discharging processes of flexible and stretchable
supercapacitor under various strain status . 25
Figure 17 – Capacitance retention of flexible and stretchable supercapacitor under
stretching status . 25
Figure 18 – Reliability of flexible and stretchable supercapacitor under stretching status . 26
Figure A.1 – Classification of supercapacitor according to its operation principles . 28
Figure A.2 – Schematic illustration of the configuration of EDLC . 28
Figure A.3 – Schematic illustration of the configuration of psuedocapacitor . 29
Figure A.4 – Schematic illustration of the configuration of asymmetric hybrid

supercapacitor . 29
Figure C.1 – Bending stage using fixed and moving stage . 32
Figure C.2 – Bending stage using rotating motor . 33
Figure D.1 – Flexible and stretchable supercapacitor with sandwich structure . 34
Figure D.2 – Flexible and stretchable supercapacitor with in-planar interdigital
structured electrodes . 34
Figure D.3 – Flexible and stretchable supercapacitor with wire-shaped structure . 35
Figure D.4 – Flexible and stretchable supercapacitor with textile structure . 35

Table 1 – Table of specification parameters for flexible and stretchable supercapacitor . 12

– 4 – IEC 62830-8:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SEMICONDUCTOR DEVICES –
SEMICONDUCTOR DEVICES FOR ENERGY
HARVESTING AND GENERATION –
Part 8: Test and evaluation methods of flexible and stretchable
supercapacitors for use in low power electronics

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Stan
...