Funding for this research was provided by:
Hunan Provincial Natural Science Foundation of China (2019JJ50652)
Scientific Research Fund of Hunan Provincial Education Department (18C0197)
Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation (2019CL01)
Article History
Received: 9 September 2020
Revised: 2 November 2020
Accepted: 11 January 2021
First Online: 26 January 2021