Reduced graphene oxide/g-C₃N₄ modified carbon fibers for high performance fiber supercapacitors

Abstract

The increasing demand for high performance portable electronic devices has promoted the research of flexible energy storage devices, and various devices have been suggested and investigated.

Fabrication of Binder‐Free TiO2 Nanofibers@Carbon Cloth for Flexible and Ultra‐Stable Supercapacitor for Wearable Electronics

“…Further, the Ragone plot in Figure 5i presents the areal energy density versus areal power density for the SC device. The single SC device shows the maximum areal energy density and areal power density of 0.14 mWh cm −2 and 3.6 mW cm −2 , respectively, which are comparatively better than various flexible SCs on CC as reported elsewhere [ 33,35,40–42,53–56 ] and the comparison is presented in Figure 5i and in Table S2 (Supporting Information). Further, to check out the practical application of the SC device, two similar SC devices are connected in series, and their CV curves at a scan rate of 10 mV s −1 are presented in Figure 5j.…”

Three-Dimensionally Conducting Network in Graphene-Based Composite Fibers toward Enhanced Electrochemical and Toughness Performance in Fibrous Supercapacitors

“…C 1 (MG) 20 f-based FSSCs exhibit a high energy density E A,cell of 5.3 μW h cm –2 (21.1 μW h cm –2 for single fiber) at a power density P A,cell of 0.02 mW cm –2 , indicating a good charge storage capability (Figure a). This E A,cell value is higher than that of C 1 (MG) 10 f-based FSSCs (3.1 μW h cm –2 ) and C 1 (MG) 40 f-based FSSCs (4.1 μW h cm –2 ) in this work and superior to those of previously reported carbon-based FSSCs, such as rGO-PEDOT:PSS FSSC (4.55 μW h cm –2 ), CNT FSSC (0.2 μW h cm –2 ), rGO/g-C 3 N 4 /carbon FSSC (2.19 μW h cm –2 ), and so on. , Afterward, we compared the overall performance of C 1 (MG) 20 f-based FSSCs with those previously reported GF-based FSSCs in references, including C A , rate performance, electrical conductivity, mechanical strength, and toughness. We are pleased to find that C 1 (MG) 20 f-based FSSCs show advantages both in electrochemical and mechanical properties (Figure b). ,,− Besides, CV and GCD curves show negligible capacitance degradation at different bending angles (90 and 180°) (Figure S9), indicating the excellent flexibility and structural stability of C 1 (MG) 20 f-based FSSCs.…”

Label-Free SERS Analysis of Serum Using Ag NPs/Cellulose Nanocrystal/Graphene Oxide Nanocomposite Film Substrate in Screening Colon Cancer

“…The broad absorption band centered at 3362 cm −1 for GO-BCM and Ag NPs/CNC/GO film was attributed to the O-H bond stretching vibrations from the -OH and -COOH groups. In contrast to GO-BCM, the characteristic peak of the C=O bond near 1738 cm −1 of the Ag NPs/CNC/GO composite film was dramatically weakened, indicating that the GO in the complex film was reduced [ 22 ]. The Ag NPs/CNC-BCM showed no apparent absorption peaks compared with CNC-BCM, only a small enhancement of the peak intensity.…”