دورية أكاديمية
Electrochromism of Viologen/Polymer Composite: From Gel to Insulating Bulk for High-Voltage Applications
| العنوان: | Electrochromism of Viologen/Polymer Composite: From Gel to Insulating Bulk for High-Voltage Applications |
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| المؤلفون: | Yongjie Nie, Meng Zhang, Yuanwei Zhu, Yu Jing, Wenli Shi, Guoping Li, Haopeng Chen, Yihang Jiang, Xianping Zhao, Tengfei Zhao, Guanghao Lu, Shengtao Li |
| المصدر: | Materials, Vol 14, Iss 19, p 5901 (2021) |
| بيانات النشر: | MDPI AG, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Technology LCC:Electrical engineering. Electronics. Nuclear engineering LCC:Engineering (General). Civil engineering (General) LCC:Microscopy LCC:Descriptive and experimental mechanics |
| مصطلحات موضوعية: | insulation, polymer, space charge, high voltage, electrochromism, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, QC120-168.85 |
| الوصف: | Power equipment operates under high voltages, inducing space charge accumulation on the surface of key insulating structures, which increases the risk of discharge/breakdown and the possibility of maintenance workers experiencing electric shock accidents. Hence, a visualized non-equipment space charge detection method is of great demand in the power industry. Typical electrochromic phenomenon is based on redox of the material, triggered by a voltage smaller than 5 V with a continuous current in μA~mA level, which is not applicable to high electric fields above 106 V/m with pA~nA operation current in power equipment. Until now, no naked-eye observation technique has been realized for space charge detection to ensure the operation of power systems as well as the safety of maintenance workers. In this work, a viologen/poly(vinylidene fluoride-co-hexafluoropropylene)(P(VDF–HFP)) composite is investigated from gel to insulating bulk configurations to achieve high-voltage electrical-insulating electrochromism. The results show that viologen/P(VDF–HFP) composite bulk can withstand high electric fields at the 107 V/m level, and its electrochromism is triggered by space charges. This electrochromism phenomenon can be visually extended by increasing viologen content towards 5 wt.% and shows a positive response to voltage amplitude and application duration. As viologen/P(VDF–HFP) composite bulk exhibits a typical electrical insulating performance, it could be attached to the surface of insulating structures or clamped between metal and insulating materials as a space charge accumulation indicator in high-voltage power equipment. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1996-1944 |
| Relation: | https://www.mdpi.com/1996-1944/14/19/5901; https://doaj.org/toc/1996-1944 |
| DOI: | 10.3390/ma14195901 |
| URL الوصول: | https://doaj.org/article/d9272cf1728948ad9e63b75b75e5155e |
| رقم الأكسشن: | edsdoj.9272cf1728948ad9e63b75b75e5155e |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19961944 |
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| DOI: | 10.3390/ma14195901 |