Fabrication of Eco-Friendly Graphene Nanoplatelet Electrode for Electropolishing and Its Properties
Electropolishing is one of the most widely applied metal polishing techniques for passivating and deburring metal parts. Copper is often used as cathode electrode for electropolishing due to its low electrical resistance and low flow values. However, during the electropolishing process, elution of t...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-04-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/11/7/3224 |
| _version_ | 1797538882024112128 |
|---|---|
| author | Junyoung Jeong Wanjun Yoon Bongjin Chung Giyoung Jeon Seongwoo Ryu |
| author_facet | Junyoung Jeong Wanjun Yoon Bongjin Chung Giyoung Jeon Seongwoo Ryu |
| author_sort | Junyoung Jeong |
| collection | DOAJ |
| description | Electropolishing is one of the most widely applied metal polishing techniques for passivating and deburring metal parts. Copper is often used as cathode electrode for electropolishing due to its low electrical resistance and low flow values. However, during the electropolishing process, elution of the cathode electrode caused by the electrolyte and remaining oxygen gas also causes critical water pollution and inhibits electropolishing efficiency. Therefore, to achieve an efficient and eco-friendly electropolishing process, development of a highly corrosion resistive and conductive electrode is necessary. We developed a highly oriented graphene nanoplatelet (GNP) electrode that minimizes water pollution in the electropolishing process. We functionalized GNP by a one-step mass-productive ball-milling process and non-covalent melamine functionalization. Melamine is an effective amphiphilic molecule that enhances dispersibility and nematic liquid crystal phase transformation of GNP. The functionalization mechanism and the material interaction were confirmed by Raman spectroscopy after high-speed shear printing. After the electropolishing process by melamine-functionalized GNP electrodes, 304 stainless steel samples were noticeably polished as copper electrodes and elution of carbon was over 50 times less than was the case when using copper electrodes. This electropolishing performance of a highly oriented GNP electrode indicates that melamine-functionalized GNP has great potential for eco-friendly electropolishing applications. |
| first_indexed | 2024-03-10T12:37:29Z |
| format | Article |
| id | doaj.art-321673349c354e0799f0e1aec3b72aaf |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T12:37:29Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-321673349c354e0799f0e1aec3b72aaf2023-11-21T14:10:02ZengMDPI AGApplied Sciences2076-34172021-04-01117322410.3390/app11073224Fabrication of Eco-Friendly Graphene Nanoplatelet Electrode for Electropolishing and Its PropertiesJunyoung Jeong0Wanjun Yoon1Bongjin Chung2Giyoung Jeon3Seongwoo Ryu4Department of Materials Science and Engineering, The University of Suwon, 17, Wauan-gil, Bongdam-eup, Hwaseong-si, Gyeonggi-do 18323, KoreaCS Innovation, 26-16, Maebawi-ro, Ujeong-eup, Hwaseong-si, Gyeonggi-do 18559, KoreaDepartment of Materials Science and Engineering, The University of Suwon, 17, Wauan-gil, Bongdam-eup, Hwaseong-si, Gyeonggi-do 18323, KoreaDepartment of Materials Science and Engineering, The University of Suwon, 17, Wauan-gil, Bongdam-eup, Hwaseong-si, Gyeonggi-do 18323, KoreaDepartment of Materials Science and Engineering, The University of Suwon, 17, Wauan-gil, Bongdam-eup, Hwaseong-si, Gyeonggi-do 18323, KoreaElectropolishing is one of the most widely applied metal polishing techniques for passivating and deburring metal parts. Copper is often used as cathode electrode for electropolishing due to its low electrical resistance and low flow values. However, during the electropolishing process, elution of the cathode electrode caused by the electrolyte and remaining oxygen gas also causes critical water pollution and inhibits electropolishing efficiency. Therefore, to achieve an efficient and eco-friendly electropolishing process, development of a highly corrosion resistive and conductive electrode is necessary. We developed a highly oriented graphene nanoplatelet (GNP) electrode that minimizes water pollution in the electropolishing process. We functionalized GNP by a one-step mass-productive ball-milling process and non-covalent melamine functionalization. Melamine is an effective amphiphilic molecule that enhances dispersibility and nematic liquid crystal phase transformation of GNP. The functionalization mechanism and the material interaction were confirmed by Raman spectroscopy after high-speed shear printing. After the electropolishing process by melamine-functionalized GNP electrodes, 304 stainless steel samples were noticeably polished as copper electrodes and elution of carbon was over 50 times less than was the case when using copper electrodes. This electropolishing performance of a highly oriented GNP electrode indicates that melamine-functionalized GNP has great potential for eco-friendly electropolishing applications.https://www.mdpi.com/2076-3417/11/7/3224grapheneelectrodefunctionalizationelectropolishingeco-friendly |
| spellingShingle | Junyoung Jeong Wanjun Yoon Bongjin Chung Giyoung Jeon Seongwoo Ryu Fabrication of Eco-Friendly Graphene Nanoplatelet Electrode for Electropolishing and Its Properties Applied Sciences graphene electrode functionalization electropolishing eco-friendly |
| title | Fabrication of Eco-Friendly Graphene Nanoplatelet Electrode for Electropolishing and Its Properties |
| title_full | Fabrication of Eco-Friendly Graphene Nanoplatelet Electrode for Electropolishing and Its Properties |
| title_fullStr | Fabrication of Eco-Friendly Graphene Nanoplatelet Electrode for Electropolishing and Its Properties |
| title_full_unstemmed | Fabrication of Eco-Friendly Graphene Nanoplatelet Electrode for Electropolishing and Its Properties |
| title_short | Fabrication of Eco-Friendly Graphene Nanoplatelet Electrode for Electropolishing and Its Properties |
| title_sort | fabrication of eco friendly graphene nanoplatelet electrode for electropolishing and its properties |
| topic | graphene electrode functionalization electropolishing eco-friendly |
| url | https://www.mdpi.com/2076-3417/11/7/3224 |
| work_keys_str_mv | AT junyoungjeong fabricationofecofriendlygraphenenanoplateletelectrodeforelectropolishinganditsproperties AT wanjunyoon fabricationofecofriendlygraphenenanoplateletelectrodeforelectropolishinganditsproperties AT bongjinchung fabricationofecofriendlygraphenenanoplateletelectrodeforelectropolishinganditsproperties AT giyoungjeon fabricationofecofriendlygraphenenanoplateletelectrodeforelectropolishinganditsproperties AT seongwooryu fabricationofecofriendlygraphenenanoplateletelectrodeforelectropolishinganditsproperties |