IEC IEC TS 62607-6-1 Edition 1.0 2020-07 TECHNICAL SPECIFICATION colour inside INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 07.120 ISBN 978-2-8322-8561-9 Warning! Make sure that you obtained this publication from an authorized distributor. ? Registered trademark of the International Electrotechnical Commission IECTS 62607-6-1:2020@IEC2020 - 2 - FOREWORD INTRODUCTION. .6 Scope. 2 Normative references 3 Terms and definitions 3.1 General terms 3.2 Key control characteristics . 8 3.3 Terms related to measurements.. Sample preparation .. 4 10 Measurement of volume resistivity of graphene pellet... 5 5.1 Description of the measurement apparatus 10 5.2 Determination of sample amount. 12 5.3 The measurement procedures... 6 Data analysis and interpretation of results . 6.1 General.. .12 6.2 Analysis of volume resistivity as a function of the applied pressures .. 6.3 Calculation of volume conductivity of a pellet..... 6.4 Analysis of volume resistivity (or volume conductivity) as a function of the volume density of graphene pellet.... .13 7 Report .. 14 Annex A (informative) Case studies A.1 Graphene (reduced graphene oxide (rGO) and graphene nanopowder (GNP)) .... A.2 Morphology change of rGO flakes before and after pressurization.. .15 A.3 Ramanspectroscopymeasurementofgraphenepowderbeforeandafter pressurization up to 52 MPa.. ..16 A.4 Results on powder resistivity measurements. ...17 A.4.1 Powder resistivity measurement of rGO-A (company 1) with various 17 Powder resistivity measurement of 1,0 g of rGO-B (company 2)... A.4.2 A.4.3 Powder resistivity measurement of GNP ...22 A.4.4 Powder resistivity measurement of graphene oxides with different amounts of oxygen .. .26 Bibliography. Figure 1 - Measurement system 11 Figure A.1 - FE-SEM images of rGO flakes of (A) Company 1 (rGO-A), (B) Company 2 (rGO-B) and (C) graphene nanopowder (GNP) before (left) and after (right) .15 pressurization. Figure A.2 - Raman spectra of (A) rGO-A, (B) rGO-B and (C) GNP before (black line) and after (red line) pressurization .. Figure A.3 - Comparison data for I/IG of rGO-A (short-dash line), rGO-B (solid line) and GNP (long-dash line) before and after pressurization .... 16 Figure A.4 - Correlation plots of (A) thickness, (B) volume resistivity (py), and (C) volume conductivity (ov) as a function of the applied pressure: (1) 0,1 g and (2) 0,2 g of rGO-A.... .18 IECTS62607-6-1:2020@IEC2020 - 3 - Figure A.5 - Correlation plots of (A) volume resistivity (py) and (B) volume conductivity (oy) as a function of the volume density (dy) of a graphene pellet: O,1 g (filled symbol) and 0,2 g (unfilled symbol) of rGO-A. Figure A.6 - Correlation plots of (A) thickness (t), (B) volume resistivity (py), and (C) volume conductivity (oy) of rGO-B (1,0 g) as a function of the applied pressure . Figure A.7 - Correlation plots of (A) volume resistivity (py) and (B) volume conductivity (oy) of rGO-B (1,0 g) as a function of the volume density (dy) of the graphene pellet . Figure A.8 - Correlation plots of (A) volume resistivity (py) and (B) volume conductivity (oy) as a function of the volume density (dy)of graphene pellets: 0,1 g (filled symbol), 0,2 g (unfilled symbol) of rGO-A and 1,0 g (lined symbol) of rGO-B ...20 Figure A.9 - Correlation plots of (A) thickness (t), (B) volume resistivity (py), and (C) volume conductivity (oy) as a function of the applied pressure: (1) 0,1 g and (2) 0,2 g of GNP. .22 Figure A.10 - Correlation plots of (A) volume resistivity (py) and (B) volume conductivity (oy) as a function of the volume density (dy) of a graphene pellet: O,1 g (filled symbol) and 0,2 g (unfilled symbol) of GNP... 23 Figure A.11 - Comparison plots of (A) volume resistivity (pv) and (B) volume conductivity (oy) as a function of the volume density (dy) of graphene pellets: rGO-A (filled symboi) and GNP (unfilled symbol).... .23 Figure A.12 - XPS survey spectra of as-received (A) rGO-A, (B) rGO-B and (C) GNP .......24 Figure A.13 - Correlation plots of thickness (t) as a