Flexible all-solid-state supercapacitor based on polyhedron C-ZIF-8/PANI composite synthesized by unipolar pulse electro
- PDF / 994,554 Bytes
- 11 Pages / 595.276 x 790.866 pts Page_size
- 72 Downloads / 175 Views
ORIGINAL PAPER
Flexible all-solid-state supercapacitor based on polyhedron C-ZIF-8/PANI composite synthesized by unipolar pulse electrodeposition method Ayman Alameen 1 & Tongtong Jin 2 & Chunfeng Xue 1 & Xuli Ma 2 & Xiao Du 1 & Xiaogang Hao 1 Received: 31 March 2020 / Revised: 21 October 2020 / Accepted: 24 October 2020 # Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract In this work, the unipolar pulse electrodeposition (UPED) method is used to electrodeposit the conductive polyaniline (PANI) on the carbonized polyhedron zeolitic imidazole particles (C-ZIF-8). The composite film of C-ZIF-8/PANI coated on the flexible substrate stainless steel wire mesh (SSWM) offers large contact area between the electrode material and the electrolyte, which provides enough active sites for charge storage. The obtained flexible electrode exhibits efficient-specific capacity of 363 F g−1 with 300° stretching angle and excellent long-term cycling stability after 10,000 cycles at 5 mA g−1 in 1 M H2SO4 electrolyte. It is found that the flexible electrode shows obvious improvement in the electrochemical properties when it was bent or stretched. Asymmetrical allsolid-state supercapacitor device is fabricated by using polyvinyl alcohol (PVA) solid gel as electrolyte and separator, which shows general gravimetric capacitance of 147, 156, and 156 F g−1 with energy densities of 8.66, 9.16, and 9.16 W kg−1 at stretching angle of 0°, 120°, and 300°, respectively, and stable power density of 162.5 W kg−1 in the different conditions. It indicates that such a composite C-ZIF-8/PANI/SSWM is a favorable material for portable and flexible energy storage.
Introduction A flexible supercapacitor (SC) is an emerging device in the energy storage area, wherein the electrochemical materials can be fabricated on the flexible substrate. The suitably designed configuration could accommodate the required level of strain to maintain superior electronic performance [1–3]. In comparison with conventional SC, flexible SC holds great promise to act as the storage unit in portable, wearable, and foldable electronic device with unique advantage, such as shape diversity, lightweight, and the ability to withstand a wide range of strain [4–7]. However, the bending or stretching of SC could
Supplementary Information The online version contains supplementary material available at https://doi.org/10.1007/s10008-02004852-3. * Xuli Ma [email protected] 1
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2
College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
lead to the cracking, peeling off, or fragmentation of the electrochemical materials which are located on the substrate surface, and thereby decreasing the general gravimetric capacitance. Thus, the mechanical properties of the electrochemical materials are essential in the aspect of fabricating flexible SC with stable capacitance [8–10]. To date, the electrode materials reported as the le
Data Loading...
