Freeze-drying and hot-pressing strategy to embed two-dimensional Ti_(0.87)O_(2) monolayers in commercial polypropylene films with enhanced dielectric properties

作     者：Wenchao Tian Fei Yan Cailing Cai Zeyi Wu Chenchen Zhang Ting Yin Sijia Lao Linfeng Hu Wenchao TIAN;Fei YAN;Cailing CAI;Zeyi WU;Chenchen ZHANG;Ting YIN;Sijia LAO;Linfeng HU

作者机构：Department of Materials ScienceFudan UniversityShanghai200433China State Grid Anhui Electric Power InstituteHefei230022China China Electric Power Research InstituteBeijing100192China 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2021年第10卷第2期

页      面：368-376页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 0817[工学-化学工程与技术] 08[工学] 070205[理学-凝聚态物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financially supported by the Researching Program of State Grid Corporation of China(GYW17201800011):Research and Application of Key Technologies to Improve the Performance of Film Insulator for High Voltage Capacitive Equipment 

主　　题：Ti_(0.87)O_(2)nanosheets polypropylene(PP) freeze-drying surface functionalization hot-pressing dielectric constant 

摘      要：The dielectric capacitor has been widely used in advanced electronic and electrical power systems due to its capability of ultrafast charging–discharging and ultrahigh power ***,its energy density is still limited by the low dielectric constant(≈2.2)of the commercial dielectric polypropylene(PP).The conventional enhancement strategy by embedding inorganic fillers in PP matrix is still difficult and challenging due to that PP hardly dissolves in any inorganic/organic *** this work,we develop a new strategy including freeze-drying,surface functionalization,and hot-pressing to incorporate Ti_(0.87)O_(2) monolayers in PP film.A series of uniform composited Ti_(0.87)O_(2)@PP film has been successfully fabricated with Ti0.87O2 content range of 0–15 wt%.The maximum dielectric constant of the as-prepared Ti_(0.87)O_(2)@PP film is 3.27 when the Ti_(0.87)O_(2) content is 9 wt%,which is about 1.5 times higher than that of pure *** study provides a feasible strategy to embed two-dimensional material into commercial PP thin-film with superior dielectric performance for practical application.