聚丙烯基薄膜储能的影响机制及优化策略研究进展  

Research Progress on Influence Mechanisms and Optimization Strategies for Energy Storage in Polypropylene-Based Films

作　　者：张传升 章程[1,2] 任成燕 黄邦斗[1] 邢照亮 邵涛 Zhang Chuansheng;Zhang Cheng;Ren Chengyan;Huang Bangdou;Xing Zhaoliang;Shao Tao(Beijing International S&T Cooperation Base for Plasma Science and Energy Conversion Institute of Electrical Engineering Chinese Academy of Sciences,Beijing 100190 China;University of Chinese Academy of Sciences,Beijing 100049 China;State Key Laboratory of Advanced Power Transmission Technology State Grid Smart Grid Research Institute Co.Ltd,Beijing 102209 China)

机构地区：[1]等离子体科学和能源转化北京市国际科技合作基地中国科学院电工研究所,北京100190 [2]中国科学院大学,北京100049 [3]先进输电技术全国重点实验室国网智能电网研究院有限公司,北京102209

出　　处：《电工技术学报》2024年第7期2193-2213,共21页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金智能电网联合基金项目(U2166215)。

摘　　要：双向拉伸聚丙烯(BOPP)薄膜因其具有良好的绝缘、损耗低、金属化后具有自愈性能等特性而被广泛应用于薄膜电容器。目前BOPP薄膜电容器也面临单位体积内储能密度低、高温性能差等问题,无法满足设备集约化、小型化的发展趋势,亟须开展聚丙烯基薄膜储能密度提升研究。该文首先介绍了影响介质储能特性的极化与击穿机制,为改性方案的开发提供了必要理论依据。其次,仔细探讨了现有工业生产工艺所引发的多种不利因素与关键挑战,为改性方案与生产实际相结合寻找到介入点;深入挖掘了现有调控手段,如基体调控、结构设计优化以及表面修饰等,分析了无机与有机组分掺杂、“三明治”结构、功能层沉积与接枝等方案的优势和不足,并归纳了诸如量子尺寸效应调控等新颖方法。最后,从工业生产角度提出了高效率、低成本的改性方法并探讨了相应的机制,并对未来研究重点进行了总结与展望。With the development of power equipment to miniaturization and densification,higher requirements are put forward for the performance indicators of film capacitors such as energy storage,dielectric properties,temperature resistance and lifetime.It also brings many new opportunities and challenges.The breakdown and polarization characteristics,defects,self-healing properties,and regulation methods of biaxially oriented polypropylene(BOPP)films and their composite films are the momentous factors affecting their energy storage density.The related research progress of BOPP films is summarized as follows:Firstly,the breakdown in the films depends on the charge transport under the action of electric field and high temperature.Due to the existence of conductive and dielectric loss of the films,the heat accumulation has a significant effect on the breakdown process of the films.Therefore,it is necessary to avoid introducing unnecessary polarization factors or limiting adverse polarization factors.The final evaluation criteria of energy storage effect and breakdown field strength are experimental verification.To save material costs,machine learning and phasefield simulation have played an increasingly important role in functional screening and performance prediction in recent years.However,the factors such as holes,space charge,complex electric field,and incomplete crystallization significantly affect the boundary conditions of the simulation models.These factors lead to discrepancies between machine learning based on phase-field simulation and experiment that need to be addressed in the future.Secondly,biaxially oriented process is an important part for polypropylene from substrate to thin film.As the thickness of the film decreases,the introduction of defects is inevitable.The unique self-healing properties of metallized polypropylene films are the key to ensure the lifetime of capacitors.The large-scale application of modified technology is how to make up for defects and give consideration to self-healing performance.Th

关 键 词：BOPP 薄膜 储能密度 材料改性 击穿 自愈 

分 类 号：TM215[一般工业技术—材料科学与工程]