Three-dimensional honeycomb-like porous carbon derived from tamarisk roots via a green fabrication process for high-performance supercapacitors

Carbon Nanosheets Decorated Activated Carbon Derived from Borassus Flabellifer Fruit Skin for High Performance Supercapacitors

“…The energy storage capacity of the as-prepared supercapacitors is superior to that of the biomassderived supercapacitors reported earlier. 17,19,66,67,29,27 To summarize, the high rate performance, good electrochemical stability, high-frequency response, and extraordinary specific capacitance obtained in both electrolytes for ABFFS carbon can be attributed to several factors such as optimal porosity, robust carbon network, and partially graphitic carbon sheet decoration on porous carbon. The carbon network is highly interwoven and its partially graphitic nature makes it highly conductive, and thus, it forms excellent electrically conductive electrodes.…”

“…17 Another report by Wang et al on tamarisk root-derived honeycomb-like porous carbon showed a high specific capacitance 293 F g −1 at a current density of 0.5 A g −1 in 0.5 M Na 2 SO 4 electrolyte. 29 Hao et al reported that the unique multilayered structure of ginkgo leaves prepared using hydrothermal treatment and a KOH activation process offered interconnected carbon nanosheets with micro/mesopores structures and showed a high specific capacitance of 364 F g −1 at 0.5 A g −1 in 6 M KOH. 27 In summary, biomass materials are considered as potential precursors for preparing multi-functional carbons with enhanced electrochemical performance in supercapacitor applications.…”

Momordica Grosvenori Shell-Derived Porous Carbon Materials for High-Efficiency Symmetric Supercapacitors

“…It can be observed from the survey spectrum in Figure 4 a that there are three binding energy peaks at about 284.8, 533.5, and 400.0 eV [ 36 ], reflecting the existence of C, O, and N. Through the deconvolution of the high-resolution N 1s spectrum, four peaks at 400.02, 401.26, 402.78, and 404.46 eV ( Figure 4 b) can be related to pyridinic-N, pyrrolic-N, quaternary-N, and oxidized-N [ 37 ], respectively. Thus, the content of pyrrolic-N in MGCs-2 is as high as 11.05%, which is considered electrochemically helpful for improving the electrochemical capacitance [ 38 ]. In addition, the high content of graphitic-N and quaternary-N in MGCs-2 can enhance its electrical conductivity [ 39 ].…”

Comparison of porous carbons derived from sodium alginate and calcium alginate and their electrochemical properties

“…These CV curves show rectangular shapes from 0 to 1 V over the test range of scan rates, suggesting that an ideal electrical double layer effect of these tested supercapacitor cells, and small shape distortions can be observed as the scan rate increased from 20 to 200 mV s À1 , demonstrating strong charge transporting ability of these charcoals. [42][43][44][45] The smaller the rectangular shape distortion, the higher the charge transporting ability. Therefore, the magnitude relationship of the charge transporting abilities is: SA-AC-2 > CA-AC-2, SA-AC-3 z CA-AC-3 and SA-AC-4 > CA-AC-4.…”