Tseng, Chia HuiChia HuiTsengLin, Hsun HaoHsun HaoLinHung, Cheng WeiCheng WeiHungI-Chung ChengSHYH-CHYANG LUOI-CHUN CHENGJIAN-ZHANG CHEN2023-05-222023-05-222021-01-012470-1343https://scholars.lib.ntu.edu.tw/handle/123456789/631197https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110130262&doi=10.1021%2facsomega.1c01601&partnerID=40&md5=1d8a2cb21c3a7dd150c6d93dca1895e5An electropolymerized poly(3,4-ethylenedioxythiophene) (PEDOT)/screen-printed reduced graphene oxide (rGO)-chitosan (CS) bilayer material was coated on carbon cloth to form electrodes for gel-electrolyte flexible supercapacitors. The conductive polymer and carbon-based materials mainly contribute pseudocapacitance (PC) and electrical double-layer capacitance (EDLC), respectively. The high porosity and hydrophilicity of the PEDOT/rGO-CS bilayer material offers a large contact area and improves the contact quality for the gel electrolyte, thereby enhancing the capacitive performance. Cyclic voltammetry (CV) under a potential scan rate of 2 mV/s revealed that a maximum areal capacitance of 1073.67 mF/cm2 was achieved. The capacitance contribution ratio PC/EDLC was evaluated to be ∼67/33 by the Trasatti method. A 10,000-cycle CV test showed a capacitance retention rate of 99.3% under a potential scan rate of 200 mV/s, indicating good stability. The areal capacitance remains similar under bending with a bending curvature of up to 1.5 cm-1.enHIGH-PERFORMANCE SUPERCAPACITOR; CARBON-FIBER; ELECTROCHEMICAL CODEPOSITION; NANOWIRES/CARBON CLOTH; NANOCOMPOSITE; NANOTUBES; COMPOSITE; SURFACE; LIQUID; NANOSTRUCTURESjournal article10.1021/acsomega.1c01601342353172-s2.0-85110130262WOS:000670306400024https://api.elsevier.com/content/abstract/scopus_id/85110130262