Journal article 644 views 151 downloads
Gap width modification on fully screen-printed coplanar Zn|MnO2 batteries
Flexible and Printed Electronics, Volume: 5, Issue: 3, Start page: 035007
Swansea University Author:
Tim Claypole
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DOI (Published version): 10.1088/2058-8585/abaaa0
Abstract
Fully printed primary zinc-manganese dioxide (Zn|MnO2) batteries in coplanar configuration were fabricated by sequential screen printing. While electrode dimensions and transferred active masses were kept at constant levels, electrode separating gaps were incrementally enlarged from 1 mm to 5 mm. Ca...
| Published in: | Flexible and Printed Electronics |
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| ISSN: | 2058-8585 |
| Published: |
IOP Publishing
2020
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa55386 |
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| Abstract: |
Fully printed primary zinc-manganese dioxide (Zn|MnO2) batteries in coplanar configuration were fabricated by sequential screen printing. While electrode dimensions and transferred active masses were kept at constant levels, electrode separating gaps were incrementally enlarged from 1 mm to 5 mm. Calendering of solely zinc anodes increased interparticle contact of active material within the electrodes while the porosity of manganese dioxide based electrodes was maintained by non-calendering. Chronopotentiometry revealed areal capacities for coplanar batteries up to 2.8 mAh cm−2. Galvanostatic electrochemical impedance spectroscopy measurements and short circuit measurements were used to comprehensively characterise the effect of gap width extension on bulk electrolyte resistance and charge transfer resistance values. Linear relationships between nominal gap widths, short circuit currents and internal resistances were evidenced, but showed only minor impact on actual discharge capacities. The findings contradict previous assumptions to minimise gap widths of printed coplanar batteries to a sub-millimetre range in order to retain useful discharge capacities. The results presented in this study may facilitate process transfer of printed batteries to an industrial environment. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
3 |
| Start Page: |
035007 |