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| 1 | 夹层结构P(VDF-HFP)/BN纳米复合材料的介电性能显示文摘含有纳米填料的聚合物复合材料常因填料团聚,出现泄漏电流增大和击穿强度降低等问题,不利于储能密度和储能效率的提升。为了克服这一系列问题,本文制备了改性氮化硼纳米片为夹层的P(VDF-HFP)复合膜,首先向液相剥离得到的氮化硼纳米片(BNNSs)表面引入高偶极矩的硫脲基团,然后用逐层溶液流延的工艺制备了夹层结构的P(VDF-HFP)复合膜,并对其表面形貌、介电性能、储能性能进行表征和测试。结果表明:当夹层的氮化硼纳米片浓度为0.8 mg/mL时,其电气强度从472.37 MV/m提升至529.13 MV/m,泄漏电流从1.16×10^-6 A/cm^2降至3.7×10^-8 A/cm^2,放电能量密度高达5.63 J/cm3,在350 MV/m下储能效率比纯P(VDF-HFP)提升了4.5%,介电储能性质明显改善。 | 刘亚楠 陈杰 江平开 黄兴溢 | 2020 | 绝缘材料2020，53，11： | 6 |
| 2 | Review of recent advances of polymer based dielectrics for high-energy storage in electronic power devices from the perspective of target applications显示文摘Polymer-based dielectric capacitors are widely-used energy storage devices.However,although the functions of dielectrics in applications like high-voltage direct current transmission projects,distributed energy systems,high-power pulse systems and new energy electric vehicles are similar,their requirements can be quite different.Low electric loss is a critical prerequisite for capacitors for electric grids,while high-temperature stability is an essential pre-requirement for those in electric vehicles.This paper reviews recent advances in this area,and categorizes dielectrics in terms of their foremost properties related to their target applications.Requirements for polymer-based dielectrics in various power electronic equipment are emphasized,including high energy storage density,low dissipation,high working temperature and fast-response time.This paper considers innovations including chemical structure modification,composite fabrication and structure re-design,and the enhancements to material performances achieved.The advantages and limitations of these methods are also discussed. | Wenjie Sun Jiale Mao Shuang Wang Lei Zhang Yonghong Cheng | 2021 | Frontiers of Chemical Science and Engineering2021，15，1： | 1 |
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