IEC TS 62607-4-1:2015

IEC TS 62607-4-1 ®
Edition 2.0 2015-08
TECHNICAL
SPECIFICATION
colour
inside
Nanomanufacturing – Key control characteristics –
Part 4-1: Cathode nanomaterials for nano-enabled electrical energy storage –
Electrochemical characterisation, 2-electrode cell method
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IEC TS 62607-4-1 ®
Edition 2.0 2015-08
TECHNICAL
SPECIFICATION
colour
inside
Nanomanufacturing – Key control characteristics –

Part 4-1: Cathode nanomaterials for nano-enabled electrical energy storage –

Electrochemical characterisation, 2-electrode cell method

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 07.030 ISBN 978-2-8322-2852-4

– 2 – IEC TS 62607-4-1:2015 © IEC 2015
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Terms, definitions, acronyms and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Acronyms and abbreviations . 7
4 Sample preparation methods . 7
4.1 General . 7
4.2 Reagents . 7
4.2.1 Cathode foil . 7
4.2.2 Anode . 8
4.2.3 Solvents and separator . 8
4.3 Pre-treatment of the cathode nanomaterial . 8
4.4 Preparation of the screw cell . 9
4.5 Disassembly of the screw cell . 9
5 Measurement of electrochemical properties . 10
5.1 General . 10
5.2 Open circuit voltage (OCV) . 10
5.2.1 Demarcation of method . 10
5.2.2 Experimental procedures and measurement conditions . 10
5.3 Potentiostatic electrochemical impedance spectroscopy (EIS) . 10
5.3.1 Demarcation of method . 10
5.3.2 Experimental procedures and measurement conditions . 10
5.4 Charge-discharge experiment (constant current constant voltage, CCCV) . 10
5.4.1 Demarcation of method . 10
5.4.2 Experimental procedures and measurement conditions . 10
6 Data analysis / interpretation of results . 11
6.1 Open circuit potential . 11
6.2 Electrochemical impedance spectroscopy . 11
6.3 Constant current constant voltage (CCCV) charging-discharging . 11
Annex A (informative) Case study . 12
A.1 Sample preparation . 12
A.2 Results for a LFP electrode . 15

Figure A.1 – Components for the cell . 12
Figure A.2 – Construction steps a to g . 15
Figure A.3 – Open circuit voltage/potential time graph. . 15
Figure A.4 – Electrochemical impedance graph . 16
Figure A.5 – Constant current / constant voltage – Charge-discharge cycle . 16
Figure A.6 – Capacity per cycle . 17

Table 1 – Spring force and pressure . 9

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NANOMANUFACTURING – KEY CONTROL CHARACTERISTICS –

Part 4-1: Cathode nanomaterials for nano-enabled electrical energy
storage – Electrochemical characterisation, 2-electrode cell method

FOREWORD
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The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a Technical
Specification when
• the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts, or
• the subject is still under technical development or where, for any other reason, there is the
future but no immediate possibility of an agreement on an International Standard.
Technical Specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC 62607-4-1, which is a Technical Specification, has been prepared by IEC technical
committee 113: Nanotechnology standardization for electrical and electronic products and
systems.
– 4 – IEC TS 62607-4-1:2015 © IEC 2015
This second edition cancels and replaces the first edition published in 2014. This edition
constitutes a technical revision.
Following discussions between IEC TC 113 and IEC TC 21/SC 21A: Secondary cells and
batteries containing alkaline or other non-acid electrolytes, this edition includes the following
significant technical changes with respect to the previous edition:
a) The title of IEC 62607-4-1 has been modified.
b) The scope has been revised to clarify that this Technical Specification deals with a
standardized method for the determination of electrochemical properties of cathode
nanomaterials of, for example, lithium-ion batteries utilizing lithium iron phosphate.
c) In 3.1.1, the definition of "cathode nanomaterial" has been revised to be more specific.
The text of this Technical Specification is based on the following documents:
Enquiry draft Report on voting
113/238/DTS 113/261A/RVC
Full information on the voting for the approval of this Technical Specification can be found in
the report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62607 series, published under the general title
Nanomanufacturing – Key control characteristics, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• transformed into an International Standard,
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued
...