title: Enhanced capacitance performance of Al₂O₃-TiO₂ composite thin film via sol-gel using double chelators.
abstract: Titanium dioxide (TiO2) is usually introduced into dielectric layer of aluminum electrolytic capacitor to enhance capacitance performance via forming Al2O3-TiO2 composite film. However, there is a big obstacle caused by high crystallization temperature of TiO2 to capacitance enhancement. In present work, a facile route was proposed to synthesize crystalline TiO2 with the size of 3-10 nm at room temperature using lactic acid (LA) and acetylacetone (Acac) as double chelators. After being introduced into the surface of etched aluminum foils as dielectric layer, TiO2 boosted the specific capacitance by about 24% compared to that without TiO2, and about 11% compared to that with TiO2 using lactic acid as only chelator.
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China.
authors.forename: Xianfeng
authors.initials: X
authors.lastname: Du
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China.
authors.forename: Kai
authors.initials: K
authors.lastname: Men
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China. Electronic address: ylxu@mail.xjtu.edu.cn.
authors.forename: Youlong
authors.initials: Y
authors.lastname: Xu
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China.
authors.forename: Bing
authors.initials: B
authors.lastname: Li
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China.
authors.forename: Zhuo
authors.initials: Z
authors.lastname: Yang
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China.
authors.forename: Zihan
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China.
authors.forename: Long
authors.initials: L
authors.lastname: Li
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China.
authors.forename: Liang
authors.initials: L
authors.lastname: Li
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China.
authors.forename: Tianyu
authors.initials: T
authors.lastname: Feng
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China.
authors.lastname: Wasif ur Rehman
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China.
authors.forename: Inam
authors.initials: I
authors.lastname: Ullah
authors.affiliation: Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, PR China.
authors.forename: Shengchun
authors.initials: S
authors.lastname: Mao
keywords: Aluminum electrolytic capacitor; Capacitance performance; Double chelators; Sol–gel; Titanium oxide