碳纳米管导电通路对压电纳米发电机性能的影响  

Effect of conductive paths of carbon nanotube on performance of piezoelectric nanogenerators

作　　者：闫静[1,2] 朱宁 望希言 吕梦蝶 秦跃彬 YAN Jing;ZHU Ning;WANG Xi-yan;LYU Meng-die;QIN Yue-bin(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Research on Separation Membranes and Technology,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387 [2]天津工业大学省部共建分离膜与膜过程国家重点实验室/分离膜科学与技术国家级国际联合研究中心,天津300387

出　　处：《天津工业大学学报》2023年第3期22-27,共6页Journal of Tiangong University

基　　金：国家自然科学基金资助项目(52103267)。

摘　　要：为获得高性能压电纳米发电机,提出了在纳米纤维基压电纳米发电机中构筑导电通路的策略,以提高其电荷传输能力。首先,通过静电纺丝技术和煅烧工艺制备钛酸钡(BaTiO_(3))纳米纤维,并研究纺丝条件和煅烧工艺对其形貌和结构的影响;其次,通过物理浸泡的方式掺杂不同浓度的多壁碳纳米管(MWCNT),与聚二甲基硅氧烷(PDMS)复合获得柔性压电纳米发电机,探讨MWCNT的含量对压电纳米发电机输出性能的影响。结果表明:纺丝液质量分数为42%、挤出速率为1 mL/h、煅烧温度为1000℃、升温速率为2℃/min时,获得形貌结构和结晶性良好的BaTiO_(3)纳米纤维膜;MWCNT质量分数为3%时,压电纳米发电机的综合性能最佳,开路电压和短路电流分别高达23 V和2.6μA,较纯BaTiO_(3)基压电纳米发电机性能提高4倍。本研究为设计和制备高性能压电纳米发电机提供了新的思路。In order to obtain high-performance piezoelectric nanogenerators,a strategy to construct conductive paths in nanofiber-based piezoelectric nanogenerators was proposed to improve the charge transport capabilities.First,barium titanate(BaTiO_(3))nanofibers were prepared by electrospinning technique and calcination process,and the effects of spinning and calcination conditions on their morphological structure and crystallinity were studied.Carbon nanotubes(MWCNT)were then doped in BaTiO_(3) nanofibers which were further compounded with polydime-thylsiloxane(PDMS)to obtain flexible piezoelectric nanogenerators,and the influence of the MWCNT content on the output performance of piezoelectric nanogenerators was discussed.The results show that when the concentration of the spinning solution was 42%,the extrusion rate was 1 mL/h,the calcination temperature was 1000℃,and the heating rate was 2℃/min,BaTiO_(3) nanofibers with good morphological structure and crystallinity could be obtained.When MWCNT content was 3%,BaTiO_(3)-based piezoelectric nanogenerator had the optimum overall performance,the open-circuit voltage and the short-circuit current were as high as 23 V and 2.6μA,which were 4 times higher than that of the pure BaTiO_(3)-based piezoelectric nanogenerator.The purpose of this research is providing new strategy for the design and preparation of high-performance piezoelectric nanogenerators.

关 键 词：压电纳米发电机 导电通路 碳纳米管 静电纺丝 钛酸钡 

分 类 号：TB332[一般工业技术—材料科学与工程]