Insight Into Space Charge Suppression by Interfacial Deep Traps in Polymer Nanocomposites
Artikel i vetenskaplig tidskrift, 2022

Polymer nanocomposites are attractive for HVDC insulation applications, especially for HVDC cables, due to their ability to suppress space charge accumulation through interfacial effects. However, direct evidence to support the existence of interfacial effects at the nanoscale is still lacking. Therefore, rational design and molecular engineering of the interfaces to improve the insulation properties of polymer nanocomposites remain unavailable. Here, we show that efficient space charge suppression can be achieved in polymer nanocomposites at temperatures up to 100 °C by introducing local deep traps through carefully designed nanoparticle/polymer interfaces. The local interfacial deep traps are directly detected at the nanoscale using intermodulation electrostatic force microscopy (ImEFM). This work provides a deep understanding of the interfacial effects in polymer nanocomposites and will enable the rational design of interfaces for high-performance insulation materials.

interface

HVDC insulation

Dielectrics

Polymer nanocomposites

space charge

Författare

Yao Zhou

Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA

Yujie Zhu

Department of Electrical Engineering, State Key Laboratory of Power Systems, Tsinghua University

Chao Yuan

Department of Electrical Engineering, State Key Laboratory of Power Systems, Tsinghua University

Qi Li

Department of Electrical Engineering, State Key Laboratory of Power Systems, Tsinghua University

Xiangdong Xu

Chalmers, Elektroteknik, Elkraftteknik

Yuriy Serdyuk

Chalmers, Elektroteknik, Elkraftteknik

Qing Wang

Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA, USA

Jinliang He

Department of Electrical Engineering, State Key Laboratory of Power Systems, Tsinghua University

IEEE Transactions on Dielectrics and Electrical Insulation

1070-9878 (ISSN) 15584135 (eISSN)

Vol. 29 6 2402-2404

Drivkrafter

Hållbar utveckling

Styrkeområden

Nanovetenskap och nanoteknik

Energi

Materialvetenskap

Fundament

Grundläggande vetenskaper

Ämneskategorier

Annan elektroteknik och elektronik

DOI

10.1109/TDEI.2022.3204935

Mer information

Senast uppdaterat

2023-12-11