Ba_(0.6)Sr_(0.4)TiO_(3)纳米纤维对聚合物基复合材料储能密度的影响  

Effect of Ba_(0.6)Sr_(0.4)TiO_(3) nanofibers on energy storage density of polymer-based composites

作　　者：亢金腾 王卓[1] 易志辉 李妍欣 吴丹 薛颖 叶荣辉 赵婷[1] KANG Jin-teng;WANG Zhuo;YI Zhi-hui;LI Yan-xin;WU Dan;XUE Ying;YE Rong-hui;ZHAO Ting(School of Material Science and Engineering,Shaanxi University of Science&Technology,Xi′an 710021,China)

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报》2023年第3期111-116,共6页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(51572160);陕西省科技厅重点研发计划项目(2021GY-224);陕西科技大学研究生创新基金项目。

摘　　要：采用溶胶-凝胶结合静电纺丝法制备钛酸锶钡纳米纤维(Ba_(0.6)Sr_(0.4)TiO_(3)NFs, BST NFs)前驱体,对BST NFs前驱体进行750℃、800℃、850℃和900℃煅烧,结合XRD和SEM观察了煅烧后得到的BST NFs的晶体结构和形貌,选出相对较优的煅烧温度.采用溶液流延法制备BST NFs/PVDF复合薄膜,探究不同含量钛酸锶钡纳米纤维对复合材料的介电性能和储能性能影响.通过铁电测试,0.5 vol.%BST NFs/PVDF复合薄膜在电场强度为250 kV/mm下储能密度达到了3.94 J/cm^(3),是纯PVDF薄膜的1.5倍.The barium strontium titanate nanofibers(Ba_(0.6)Sr_(0.4)TiO_(3)NFs,BST NFs)precursor solution was prepared by sol-gel combined electrospinning method,and the BST NFs precursor solution was calcined at 750℃,800℃,850℃and 900℃.The morphology and aspect ratio of nanofibers were observed by XRD and SEM,and the optimal calcination temperature was selected.BST NFs/PVDF composite films were prepared by solution casting method,and the effects of different contents of barium strontium titanate nanofibers on the dielectric properties and energy storage properties of the composites were investigated.According to ferroelectric test,the energy storage density of 0.5 vol.%BST NFs/PVDF composite film reached 3.94 J/cm^(3) when the electric field intensity was 250 kV/mm,which was 1.5 times that of pure PVDF film.

关 键 词：聚偏氟乙烯(PVDF) 钛酸锶钡 储能密度 复合材料 静电纺丝 

分 类 号：TB332[一般工业技术—材料科学与工程]