Evaluation of Electropolymerization as a Versatile Approach for Applying Conformal Polymer Electrolyte Films on Complex Micro‐Scale Silicon Architectures
Abstract Application of conformal thin polymer electrolyte coatings on architecturally complex conductive electrode surfaces in various microdevices presents a significant technical challenge using conventional thin‐film deposition techniques. In this study, electro‐grafting combined with electropol...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2025-04-01
|
| Series: | Advanced Materials Interfaces |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/admi.202400689 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849701443043328000 |
|---|---|
| author | Yuyang Hou Fiona Yu Thomas Rüther Theo Rodopoulos |
| author_facet | Yuyang Hou Fiona Yu Thomas Rüther Theo Rodopoulos |
| author_sort | Yuyang Hou |
| collection | DOAJ |
| description | Abstract Application of conformal thin polymer electrolyte coatings on architecturally complex conductive electrode surfaces in various microdevices presents a significant technical challenge using conventional thin‐film deposition techniques. In this study, electro‐grafting combined with electropolymerization is investigated as a more versatile technique for applying these electrolyte coatings in order to advance the development of 3D microbatteries. Gel polymer electrolyte (GPE) films of several micrometers of thickness are electrochemically polymerized on cylindrical silicon micropillars employed as the anode in a lithium‐ion battery. This in‐situ electrochemical method allowed greater control of polymer film formation by applying a suitably negative potential for a designated duration. Scanning electron microscopy coupled with energy‐dispersive X‐ray spectroscopy is used to analyze the surface and cross sections of polymer‐coated silicon micropillars to evaluate film formation as a function of applied potential and electrodeposition time. Discrete robust GPE samples, with the same composition as those prepared by electropolymerization, are also prepared to simplify characterization. The polymer electrolyte exhibits good thermal and electrochemical stability, high discharge capacity, and excellent capacity retention at high rates when evaluated in a coin cell. These results suggest that the electrochemical electrolyte coating technique holds promise for fabricating small‐scale lithium‐ion batteries with complex electrode architectures. |
| format | Article |
| id | doaj-art-84d3b269d5ab488696280f9ffe4d2fd7 |
| institution | DOAJ |
| issn | 2196-7350 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj-art-84d3b269d5ab488696280f9ffe4d2fd72025-08-20T03:17:55ZengWiley-VCHAdvanced Materials Interfaces2196-73502025-04-01127n/an/a10.1002/admi.202400689Evaluation of Electropolymerization as a Versatile Approach for Applying Conformal Polymer Electrolyte Films on Complex Micro‐Scale Silicon ArchitecturesYuyang Hou0Fiona Yu1Thomas Rüther2Theo Rodopoulos3CSIRO Mineral Resources Clayton VIC 3168 AustraliaCSIRO Mineral Resources Clayton VIC 3168 AustraliaCSIRO Energy Clayton VIC 3168 AustraliaCSIRO Mineral Resources Clayton VIC 3168 AustraliaAbstract Application of conformal thin polymer electrolyte coatings on architecturally complex conductive electrode surfaces in various microdevices presents a significant technical challenge using conventional thin‐film deposition techniques. In this study, electro‐grafting combined with electropolymerization is investigated as a more versatile technique for applying these electrolyte coatings in order to advance the development of 3D microbatteries. Gel polymer electrolyte (GPE) films of several micrometers of thickness are electrochemically polymerized on cylindrical silicon micropillars employed as the anode in a lithium‐ion battery. This in‐situ electrochemical method allowed greater control of polymer film formation by applying a suitably negative potential for a designated duration. Scanning electron microscopy coupled with energy‐dispersive X‐ray spectroscopy is used to analyze the surface and cross sections of polymer‐coated silicon micropillars to evaluate film formation as a function of applied potential and electrodeposition time. Discrete robust GPE samples, with the same composition as those prepared by electropolymerization, are also prepared to simplify characterization. The polymer electrolyte exhibits good thermal and electrochemical stability, high discharge capacity, and excellent capacity retention at high rates when evaluated in a coin cell. These results suggest that the electrochemical electrolyte coating technique holds promise for fabricating small‐scale lithium‐ion batteries with complex electrode architectures.https://doi.org/10.1002/admi.2024006893D microbatterieselectrochemical polymerizationgel polymer electrolytesilicon micropillar arrayssurface coatings |
| spellingShingle | Yuyang Hou Fiona Yu Thomas Rüther Theo Rodopoulos Evaluation of Electropolymerization as a Versatile Approach for Applying Conformal Polymer Electrolyte Films on Complex Micro‐Scale Silicon Architectures Advanced Materials Interfaces 3D microbatteries electrochemical polymerization gel polymer electrolyte silicon micropillar arrays surface coatings |
| title | Evaluation of Electropolymerization as a Versatile Approach for Applying Conformal Polymer Electrolyte Films on Complex Micro‐Scale Silicon Architectures |
| title_full | Evaluation of Electropolymerization as a Versatile Approach for Applying Conformal Polymer Electrolyte Films on Complex Micro‐Scale Silicon Architectures |
| title_fullStr | Evaluation of Electropolymerization as a Versatile Approach for Applying Conformal Polymer Electrolyte Films on Complex Micro‐Scale Silicon Architectures |
| title_full_unstemmed | Evaluation of Electropolymerization as a Versatile Approach for Applying Conformal Polymer Electrolyte Films on Complex Micro‐Scale Silicon Architectures |
| title_short | Evaluation of Electropolymerization as a Versatile Approach for Applying Conformal Polymer Electrolyte Films on Complex Micro‐Scale Silicon Architectures |
| title_sort | evaluation of electropolymerization as a versatile approach for applying conformal polymer electrolyte films on complex micro scale silicon architectures |
| topic | 3D microbatteries electrochemical polymerization gel polymer electrolyte silicon micropillar arrays surface coatings |
| url | https://doi.org/10.1002/admi.202400689 |
| work_keys_str_mv | AT yuyanghou evaluationofelectropolymerizationasaversatileapproachforapplyingconformalpolymerelectrolytefilmsoncomplexmicroscalesiliconarchitectures AT fionayu evaluationofelectropolymerizationasaversatileapproachforapplyingconformalpolymerelectrolytefilmsoncomplexmicroscalesiliconarchitectures AT thomasruther evaluationofelectropolymerizationasaversatileapproachforapplyingconformalpolymerelectrolytefilmsoncomplexmicroscalesiliconarchitectures AT theorodopoulos evaluationofelectropolymerizationasaversatileapproachforapplyingconformalpolymerelectrolytefilmsoncomplexmicroscalesiliconarchitectures |