Boxue Du received the M.E. degree in electrical engineering from Ibaraki University and the Ph.D. degree from Tokyo University of A&T. During 1996 to 2002, he was with The Niigata Institute of Science and Technology, Japan and was an Associate Professor. From 2000 to 2002, he was a Visiting Scientist at Niigata University, Japan. Since 2002 he has been a Professor and Director-founder of the Institute of High Voltage at the School of Electrical and Information Engineering, Tianjin University, China. His research interests are focused on dielectric failure mechanisms of polymer insulating materials, polymer dielectrics for energy storage, electrical insulation technology and application of polymer dielectrics under various extreme environments such as cryogenic, high temperature, high altitude, gamma-ray irradiation and high-intensity magnetic field. He has published 5 books and 25 book chapters in Polymer Dielectrics, and authored about 700 papers and over 210 of them published in IEEE Transactions. He has also served industry and start-ups as a consultant. He is an Editorial Boards Member of High Voltage, Journal of Electronics and Advanced Electrical Engineering, Journal of Modern Power Systems and Clear Energy, Chinese Journal of High Voltage Engineering, Insulation Materials and Electrical Engineering. He is a Fellow of IET, member at several WG in CIGRE and several Standards Committees in IEEE. He is an Associate Editor of IEEE Transactions on Industry Applications, a Subject Editor of IET Nanodielectrics, and was an Associate Editor of IEEE Transactions on Dielectrics and Electrical Insulation and IEEE Access.

• Introduction.- Insulation Failures.- Electric Field Control.- Functional Materials.- Advanced Spacers.- Performance Evaluation.

Boxue Du received the M.E. degree in electrical engineering from Ibaraki University and the Ph.D. degree from Tokyo University of A&T. During 1996 to 2002, he was with The Niigata Institute of Science and Technology, Japan and was an Associate Professor. From 2000 to 2002, he was a Visiting Scientist at Niigata University, Japan. Since 2002 he has been a Professor and Director-founder of the Institute of High Voltage at the School of Electrical and Information Engineering, Tianjin University, China. His research interests are focused on dielectric failure mechanisms of polymer insulating materials, polymer dielectrics for energy storage, electrical insulation technology and application of polymer dielectrics under various extreme environments such as cryogenic, high temperature, high altitude, gamma-ray irradiation and high-intensity magnetic field. He has published 5 books and 25 book chapters in Polymer Dielectrics, and authored about 700 papers and over 210 of them published in IEEE Transactions. He has also served industry and start-ups as a consultant. He is an Editorial Boards Member of High Voltage, Journal of Electronics and Advanced Electrical Engineering, Journal of Modern Power Systems and Clear Energy, Chinese Journal of High Voltage Engineering, Insulation Materials and Electrical Engineering. He is a Fellow of IET, member at several WG in CIGRE and several Standards Committees in IEEE. He is an Associate Editor of IEEE Transactions on Industry Applications, a Subject Editor of IET Nanodielectrics, and was an Associate Editor of IEEE Transactions on Dielectrics and Electrical Insulation and IEEE Access.

• Introduction.- Insulation Failures.- Electric Field Control.- Functional Materials.- Advanced Spacers.- Performance Evaluation.

Boxue Du received the M.E. degree in electrical engineering from Ibaraki University and the Ph.D. degree from Tokyo University of A&T. During 1996 to 2002, he was with The Niigata Institute of Science and Technology, Japan and was an Associate Professor. From 2000 to 2002, he was a Visiting Scientist at Niigata University, Japan. Since 2002 he has been a Professor and Director-founder of the Institute of High Voltage at the School of Electrical and Information Engineering, Tianjin University, China. His research interests are focused on dielectric failure mechanisms of polymer insulating materials, polymer dielectrics for energy storage, electrical insulation technology and application of polymer dielectrics under various extreme environments such as cryogenic, high temperature, high altitude, gamma-ray irradiation and high-intensity magnetic field. He has published 5 books and 25 book chapters in Polymer Dielectrics, and authored about 700 papers and over 210 of them published in IEEE Transactions. He has also served industry and start-ups as a consultant. He is an Editorial Boards Member of High Voltage, Journal of Electronics and Advanced Electrical Engineering, Journal of Modern Power Systems and Clear Energy, Chinese Journal of High Voltage Engineering, Insulation Materials and Electrical Engineering. He is a Fellow of IET, member at several WG in CIGRE and several Standards Committees in IEEE. He is an Associate Editor of IEEE Transactions on Industry Applications, a Subject Editor of IET Nanodielectrics, and was an Associate Editor of IEEE Transactions on Dielectrics and Electrical Insulation and IEEE Access.

• Introduction.- Insulation Failures.- Electric Field Control.- Functional Materials.- Advanced Spacers.- Performance Evaluation.