二维Ba_(5)Nb_(4)O_(15)提升聚合物基纳米复合薄膜的储能性能  

Energy storage performance of polymer based nanocomposite films enhanced by two dimensional Ba_(5)Nb_(4)O_(15)

作　　者：刘阳[1] 郭铁柱 郭艳[1] 赵维琛 周迪[1] LIU Yang;GUO Tiezhu;GUO Yan;ZHAO Weichen;ZHOU Di(School of Electronic Science and Engineering,Xi′an Jiaotong University,Xi′an 710049,China)

机构地区：[1]西安交通大学电子科学与工程学院,陕西西安710049

出　　处：《绝缘材料》2025年第4期24-29,共6页Insulating Materials

基　　金：陕西省高校联合项目(2023GXLH-019)。

摘　　要：聚合物基纳米复合材料因其在开发具有高储能密度的电容器方面的应用前景而受到广泛关注。本文通过水热法制备了超薄五铌酸钡(Ba_(5)Nb_(4)O_(15),BNO)纳米片,并将其作为填料与偏氟乙烯-三氟氯乙烯(PVDF-CTFE)和聚甲基丙烯甲酯(PMMA)复合制备纳米复合薄膜,研究超薄BNO纳米片对聚合物复合薄膜介电性能和储能性能的影响。结果表明:在BNO低添加量下,聚合物纳米复合薄膜的介电常数和电气强度均得到显著提升,进而提高了能量密度。当BNO质量分数为0.5%时,纳米复合薄膜的最大能量密度达到了13.96 J/cm^(3),较纯P(VDF-CTFE)/PMMA聚合物提高了2.6倍,储能效率达到了67.4%。Polymer-based nanocomposites have received much attention for their application prospects in the development of capacitors with high energy storage density.In this paper,ultra-thin barium niobate(Ba_(5)Nb_(4)O_(15),BNO)nanosheets were prepared by hydrothermal method,and were used as fillers to prepare nanocomposite films by combing with polyvinylidene fluoride trifluorochloroethylene(PVDF-CTFE)and polymethyl methacrylate(PMMA).The effects of ultra-thin BNO nanosheets on the delectric properties and energy storage properties of polymer composite films were studied.The results show that the dielectric constant and electric strength of polymer nanocomposite films increase significantly with a low BNO addition content,and thus the energy density increases.When the mass fraction of BNO is 0.5%,the maximum energy density of the nanocomposite film reaches 13.96 J/cm^(3),which is 2.6 times higher than that of pure P(VDF-CTFE)/PMMA polymer,and the energy storage efficiency reaches 67.4%.

关 键 词：二维纳米片 五铌酸钡 界面极化 聚合物纳米复合薄膜 

分 类 号：TM215[一般工业技术—材料科学与工程]