Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 11, Pages 9763-9771Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b00487
Keywords
self-supporting; transparent; flexible; graphene film; all-solid-state; supercapacitor
Funding
- National Natural Science Foundation of China [500160065, 51276044]
- National Natural Science Foundation of Guangdong Province of China [501160013]
- National Natural Science Foundation of China and Guangdong Province [U1401246]
- Science and Technology Program of Guangdong Province of China [2014B010106005, 2015B010135011]
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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 m(2)/g), and good electrochemical performance: high energy (552.3 mu Wh/cm(3)), power densities (561.9 mW/cm(3)), a superlong cycle life, and good cycling stability (the capacitance retention is similar to 94.8% after 20,000 cycles).
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