Xiling Mao

North University of China

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Wenyao Yang

Chongqing University of Arts and Sciences

Xin He

Huazhong University of Science and Technology

Yujiu Zhou

University of Electronic Science and Technology of China

Yuetao Zhao

University of Electronic Science and Technology of China

Jianhua Xu

University of Electronic Science and Technology of China

Yajie Yang

University of Electronic Science and Technology of China

Yajie Yang

University of Electronic Science and Technology of China

Lu Xu

King Abdullah University of Science and Technology

Shuwen Jiang

University of Electronic Science and Technology of China

Jinting Cui

Hubei University

Cooperative Institutions

University of Electronic Science and Technology of China

National Engineering Research Center of Electromagnetic Radiation Control Materials

North University of China

Chengdu University

Chinese Academy of Sciences

Huazhong University of Science and Technology

Beijing Institute of Technology

Shanghai Jiao Tong University

University of Shanghai for Science and Technology

Beijing Jiaotong University

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Influence of substrate temperature on the microstructure of YSZ films and their application as the insulating layer of thin film sensors for harsh temperature environments

Ceramics International (2022)

Hao Liu Xiling Mao Shuwen Jiang

10.1016/j.ceramint.2022.01.231

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Citations (16)

Poly(vinylidene fluoride-co-chlorotrifluoroethylene) and polyurea composite with enhanced energy storage properties

Journal of Materials Science Materials in Electronics (2019)

Yujiu Zhou Yuetao Zhao Fujia Chen Yan Chen Qingxia Liu

Chlorotrifluoroethylene

Polyurea

Dielectric loss

10.1007/s10854-019-01254-8

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Citations (3)

Three-Dimensional Reduced Graphene Oxide/Poly(3,4-Ethylenedioxythiophene) Composite Open Network Architectures for Microsupercapacitors

Nanoscale Research Letters (2019)

Xiling Mao Xin He Jianhua Xu Wenyao Yang Hao Liu

The three-dimensional (3D) porous nanostructures have shown attractive promise for flexible microsupercapacitors due to their merits of more exposed electrochemical active sites, higher ion diffusion coefficient, and lower charge-transfer resistance. Herein, a highly opened 3D network of reduced graphene oxide/poly(3,4-ethylenedioxythiophene) (rGO/PEDOT) was constructed through the laser-assisted treatment and in situ vapor phase polymerization methods, which can be employed with gel electrolyte to prepare flexible microsupercapacitors, without conductive additives, polymer binder, separator, or complex processing. These porous open network structures endow the obtained microsupercapacitors with a maximum specific capacitance (35.12 F cm−3 at 80 mA cm−3), the corresponding energy density up to 4.876 mWh cm−3, remarkable cycling stability (with only about 9.8% loss after 4000 cycles), and excellent coulombic efficiency, which are comparable with most previous reported rGO-based microsupercapacitors. Additionally, the microsupercapacitors connected in series/parallel have been conveniently fabricated, followed by being integrated with solar cells as efficient energy harvesting and storage systems. Moreover, the working voltage or energy density of microsupercapacitors array can be easily tailored according to the practical requirements and this work provides a promising approach to prepare high-performance flexible micro-energy device applied in the wearable electronics accordingly.

10.1186/s11671-019-3098-4

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Citations (18)

Enhanced breakdown strength and energy storage density in polyurea all-organic composite films

Materials Research Express (2019)

Yujiu Zhou Qingxia Liu Fujia Chen Yuetao Zhao Wenyao Yang

Polymer dielectric materials are highly desirable in electronic devices. However, neither low nor high dielectric constant polymers could meet the requirement of high energy storage application due to the contradiction between dielectric constant and breakdown strength. Herein, in order to obtain high performance polymer dielectrics, poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) is filled, as a functional material, into polyurea (PUA) matrix to form all-organic composites. Fortunately, PUA/P(VDF-TrFE-CFE) composites exhibit excellent performance with high dielectric constant and maintain high breakdown strength, resulting in enhanced energy storage density. The breakdown strength of composite film increases to 5130 kV cm−1, and the energy storage density can reach 4.3 J cm−3, which is much higher than pure PUA (2.4 J cm−3) and commercially biaxially oriented polypropylene (BOPP, 1.2 J cm−3). The enhancement of energy density of composite films is mainly attributed to the dipole interaction between PUA and P(VDF-TrFE-CFE) chains, which leads to increases of dielectric constant and maintain high breakdown strength simultaneously. This work provides an effective route to improve the energy density of linear dielectrics and showing great application potential for energy storage.

Polyurea

Energy density

10.1088/2053-1591/ab493f

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Citations (8)

A flexible fabric electrode with hierarchical carbon-polymer composite for functional supercapacitors

Journal of Materials Science Materials in Electronics (2017)

Lu Xu Jianhua Xu Yajie Yang Xiling Mao Xin He

10.1007/s10854-017-8149-y

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Citations (9)

Enhanced electrochemical performance of laser scribed graphene films incorporating poly(3,4-ethylenedioxythiophene) nanoparticles

High Power Laser and Particle Beams (2016)

Yan Chen XU Jian-hua Yajie Yang Lu Xu Xiling Mao

For effective use of graphene and conducting polymer, the composite films of laser scribed graphene (LSG) combined with poly(3,4-ethylenedioxythiophene) (PEDOT) are prepared with a facile laser scribing technology. Each component in the hybrid films provides unique and crucial function to achieve optimized electrochemical properties. In the presence of PEDOT nanoparticles, the LSG/PEDOT hybrid films are found to possess the better energy storage ability. The electrochemical performances of the films are evaluated with cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charging-discharging (GCD) techniques. Volumetric capacity of composite film (64.33 F/cm3) is much higher than that of pure laser-scribed graphene film (3.89 F/cm3). The hybrid film exhibits excellent charge/discharge rate and good cycling stability, retaining 94.6% of its initial charge after 1000 cycles. The electrochemical performance improvement is primarily due to the effect of PEDOT nanoparticles in prevention of agglomeration of LSG layers and the increased surface areas accessible to electrolyte ions. It is anticipated that the PEDOT nanoparticles inserted into graphene oxide layers following laser scribing reduction procedure could be a promising large scale fabrication method for supercapacitor electrodes.

Poly(N-isopropylacrylamide)

10.11884/hplpb201628.064116

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Citations (0)

Flexible binder-free hierarchical copper sulfide/carbon cloth hybrid supercapacitor electrodes and the application as negative electrodes in asymmetric supercapacitor

Journal of Materials Science Materials in Electronics (2019)

Xin He Xiling Mao Chenguang Zhang Wenyao Yang Yujiu Zhou

Copper sulfide

Power density

10.1007/s10854-019-02737-4

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Citations (32)

Improving breakdown strength and energy storage efficiency of poly(vinylidene fluoride-co-chlorotrifluoroethylene) and polyurea blend films by double layer structure design

Polymer Testing (2019)

Yujiu Zhou Qingxia Liu Fujia Chen Yuetao Zhao Jianhua Xu

Polyurea

Poling

Chlorotrifluoroethylene

Ferroelectric Polymers

10.1016/j.polymertesting.2019.106261

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Citations (6)

Influence of isocyanate index on the mechanical and dielectric properties of polyurea

Yuetao Zhao Xin He Wenyao Yang Xiling Mao Yajie Yang

Polymer materials are preferred to show a high advantage for electrostatic capacitors energy storage and pulsed power applications. In this work, a linear material, aromatic polyurea, has been successfully synthesized by stepwise polycondensation, then films with different isocyanate index of 1.00, 1.03, 1.06 and 1.09 were prepared. The Young's modulus increases with the increase of isocyanate index, which means that film with higher isocyanate index presents better mechanical property. The dielectric permittivity of samples with isocyanate index of 1.03, 1.06 and 1.09 are 3.72, 3.63, 3.79 respectively, more than 1.5 times high than Biaxially Oriented Polypropylene (BOPP). Film with isocyanate index of 1.06 presents highest energy storage efficiency because of the complete reaction and lower reaction monomer residual, which can be proved by FTIR and the dielectric loss. At 3000 kV/cm electric filed, sample with isocyanate index of 1.06 still shows a very high energy storage efficiency of 89%. Considering the comprehensive property, polyurea film with isocyanate index of 1.06 is promising for high performance pulse capacitors application.

Polyurea

Isocyanate

10.1117/12.2506334

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Citations (3)

The preparation and characteristic of poly (3,4-ethylenedioxythiophene)/reduced graphene oxide nanocomposite and its application for supercapacitor electrode

Materials Science and Engineering B (2016)

Xiling Mao Wenyao Yang Xin He Yan Chen Yuetao Zhao

Poly(N-isopropylacrylamide)

10.1016/j.mseb.2016.10.002

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Citations (60)