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IEC 62282-7-2
Edition 1.0 2021-05
INTERNATIONAL
STANDARD
Fuel cell technologies –
Part 7-2: Test methods – Single cell and stack performance tests for solid oxide
fuel cells (SOFCs)
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IEC 62282-7-2
Edition 1.0 2021-05
INTERNATIONAL
STANDARD
Fuel cell technologies –
Part 7-2: Test methods – Single cell and stack performance tests for solid oxide
fuel cells (SOFCs)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.070 ISBN 978-2-8322-9805-3
– 2 – IEC 62282-7-2:2021 IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and symbols. 8
3.1 Terms and definitions . 8
3.2 Symbols . 10
4 General safety conditions . 11
5 Cell/stack assembly unit . 11
6 Testing system . 12
6.1 Subsystems in testing system . 12
6.2 Maximum variation in control items of testing system . 13
7 Instruments and measurement methods . 14
7.1 General . 14
7.2 Instrument uncertainty . 14
7.3 Anode gas . 14
7.4 Cathode gas . 17
7.5 Output voltage . 18
7.6 Output current . 18
7.7 Cell/stack assembly unit temperature . 18
7.8 Mechanical load . 18
7.9 Total impedance . 18
7.10 Ambient conditions. 19
8 Test preparation . 19
8.1 General . 19
8.2 Standard test conditions and test range . 19
8.3 Components and impurities of anode gas and cathode gas . 20
8.4 Basis of the test procedure . 20
8.5 Confirmation of aging conditions of unit . 20
8.6 Confirmation of criteria of stable state . 20
8.7 Data acquisition method . 20
9 Test procedure . 20
9.1 Set-up . 20
9.2 Initial conditioning . 21
9.3 Shut-down . 21
10 Performance test . 21
10.1 Rated power test . 21
10.2 Current-voltage characteristics test . 22
10.3 Effective fuel utilization dependency test . 23
10.4 Long term durability test . 24
10.5 Thermal cycling durability test . 25
10.6 Internal reforming performance test . 26
10.7 Resistance components identification test . 27
11 Test report . 28
11.1 General . 28
11.2 Report items . 28
11.3 Test unit data description . 29
11.4 Test conditions description. 29
11.5 Test data description . 29
11.6 Uncertainty evaluation . 29
Annex A (informative) Example of cell assembly unit . 30
Annex B (informative) Calculation of effective fuel utilization . 31
B.1 General . 31
B.2 Calculation method . 31
B.3 Calculation examples . 32
Annex C (informative) Calculation of effective oxygen utilization . 34
C.1 General . 34
C.2 Calculation method . 34
C.3 Calculation example . 35
Annex D (informative) Maximum width of the voltage hysteresis in I‑V characteristics test . 36
Annex E (informative) Current-voltage characteristics test under constant effective
fuel utilization . 37
Annex F (informative) Test report (template) . 38
F.1 Overview. 38
F.2 General information . 38
F.3 Test unit data description . 38
F.4 Test conditions . 39
F.5 Rated power test . 39
F.6 Current-voltage characteristics test . 39
F.7 Effective fuel utilization dependency test . 40
F.8 Long-term durability test . 41
F.9 Thermal cycling durability test . 42
F.10 Internal reforming performance test . 42
F.11 Resistance components identification test . 43
Annex G (informative) Method for determining instrument uncertainty . 44
Bibliography . 45
Figure 1 – Testing system . 12
Figure 2 – Typical diagram of complex impedance plot for SOFC . 28
Figure A.1 – Example of cell assembly unit . 30
Figure D.1 – Voltage hysteresis at a given sweep rate in I-V characteristics test . 36
Figure E.1 – Example of the record in current-voltage characteristics test under
constant effective fuel utilization . 37
Table 1 – Symbols . 10
Table B.1 − n for representative fuels . 32
j
Table B.2 − Anode gas composition, flow rate of each fuel component q , and n q . 32
j j j
Table C.1 − Cathode gas composition, q , and I . 35
O2 theory
– 4 – IEC 62282-7-2:2021 IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FUEL CELL TECHNOLOGIES –
Part 7-2: Test methods – Single cell and
stack performance tests for solid oxide fuel cells (SOFCs)
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 Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC
Publication(s)"). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this prep
...