维普中文期刊产品整合服务

Significantly enhanced energy density of nanodiamond/polyimide composites at high temperatures with ultralow nanodiamond contents

查看全文 作　　者：WANG [1,2]ChengWei;CAO [3]XiaoDan;TIAN [1,2]JunYuan;YU [3]Fang;JIANG [3]FengYing;REN [1,3]KaiLiang 高影响力作者 机构地区：[1]Beijing Institute of Nanoenergy and Nanosystems,Chinese Academy of Sciences,Bejing 100083,China;[2]School of Nanoscience and Technology,University of Chinese Academy of Sciences,Bejing 100049,China;[3]Center on Nanoenergy Research,School of Physical Science and Technology,Guangxi University,Naning 530004,China高影响力机构 出　　处：《Science China(Technological Sciences)》索引2023年第66卷第4期,共10页高影响力期刊 基　　金：supported by the National Key Research&Development Project of China(Grant No.2021YFB3200303);the National Natural Science Foundation of China(Grant No.52172082)。 摘　　要：The development of miniature devices has generated a large demand for dielectric polymers with high energy storage density,especially at high temperatures.First,poly(methyl methacrylate)(PMMA)-coated nanodiamond(ND)particles were incorporated into a polyimide(PI)substrate to fabricate ND-g-PMMA/PI(NPP)composites.We found for the first time that with a very low content(0.4 vol.%)of ND particles,NPP-0.4 composite material gave the dielectric constant of 4.4,which is 37.5%higher than that of the PI film.The maximum energy density of the NPP-0.4 composite film achieves 9.4 J cm^(-3)at room temperature,which is 54%higher than that of the PI film.Furthermore,we found that the NPP-0.2 composite reaches the highest energy density and discharge efficiency of 5.77 J cm^(-3)and 72.3%at 150℃,which are 104%and 51.3%higher than those of the PI film at 150℃.This result shows a much higher energy density than most previously published results for high-temperature polymer capacitors.This phenomenon can be explained by the simulation results using COMSOL in which the interface polarization of ND/PI composites reached their maximum value with ultralow ND contents(0.4 vol.%).This research shows great promise for polymer capacitors with relatively high energy density at high temperatures. 关 键 词：energy storage high-temperature capacitor NANODIAMOND interface polarization
相关文献

参考文献(32)

引证文献(1)

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费