title: Transparent and Self-Supporting Graphene Films with Wrinkled- Graphene-Wall-Assembled Opening Polyhedron Building Blocks for High Performance Flexible/Transparent Supercapacitors.
abstract: Improving mass loading while maintaining high transparency and large surface area in one self-supporting graphene film is still a challenge. Unfortunately, all of these factors are absolutely essential for enhancing the energy storage performance of transparent supercapacitors for practical applications. To solve the above bottleneck problem, we produce a novel self-supporting flexible and transparent graphene film (STF-GF) with wrinkled-wall-assembled opened-hollow polyhedron building units. Taking advantage of the microscopic morphology, the STF-GF exhibits improved mass loading with high transmittance (70.2% at 550 nm), a large surface area (1105.6 m2/g), and good electrochemical performance: high energy (552.3 μWh/cm3), power densities (561.9 mW/cm3), a superlong cycle life, and good cycling stability (the capacitance retention is ∼94.8% after 20,000 cycles).
authors.affiliation: School of Material and Energy, Guangdong University of Technology , Guangzhou 510006, P. R. China.
authors.forename: Na
authors.identifier: http://orcid.org/0000-0001-5085-2533
authors.initials: N
authors.lastname: Li
authors.affiliation: School of Material and Energy, Guangdong University of Technology , Guangzhou 510006, P. R. China.
authors.forename: Xuankai
authors.initials: X
authors.lastname: Huang
authors.affiliation: School of Material and Energy, Guangdong University of Technology , Guangzhou 510006, P. R. China.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Zhang
authors.affiliation: School of Material and Energy, Guangdong University of Technology , Guangzhou 510006, P. R. China.
authors.forename: Yunyong
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory of Optoelectronic Materials and Technologies, School of Material Science and Engineering, Sun Yat-sen (Zhongshan) University , Guangzhou 510275, P. R. China.
authors.forename: Chengxin
authors.identifier: http://orcid.org/0000-0001-8355-6431
authors.initials: C
authors.lastname: Wang
keywords: all-solid-state; flexible; graphene film; self-supporting; supercapacitor; transparent