A high-capacity carbon prepared from renewable chicken feather biopolymer for supercapacitors

High-Performance Supercapacitor Based on the NaOH Activated D-Glucose Derived Carbon

“…1). Compared with the XRD pattern of the original CSs, besides the decreased intensity and shifted position of broad (002) diffraction peaks, [23][24][25] no other signi¯cant changes can be observed in both the XRD patterns of the 600 C and 700 C-activated CSs. However, when the activation temperature rises to 800 C or 900 C, a strong graphite (002) di®raction peak at 2 % 26 is detected, indicating the existence of graphite structures in these two activated samples, especially for the 900 C-activated CSs, the XRD pattern shows that the structure of it is mainly composed by graphite.…”

Metallic and Oxide Electrodeposition

“…The differential capacitance is defined as C = dQ/dV where V is the difference of potential between the capacitor plates and Q is the accumulated charge in the active surface of capacitor material. The geometric relation of capacitance can be providing by equation 3 [6][7]. ) respectively.…”

“…The first capacitors of carbon materials can provide the specific capacitances of 15 -50 μFcm -2 [8]. The materials with capacitance densities of one, two or more hundreds of Fcm -2 or Fg -1 have been denominated as"supercapacitors" or "ultracapacitors" [4][5][6][7][8]. There are two principal types of supercapacitors: (a) the double-layer capacitor, and (b) the redox pseudocapacitor, the latter being developed in this paper.…”

“…In many cases the capacitance depends on the preparation method and the deposition of oxides materials. Capacitances up to 500 F/g [5] or 720 F/g are reported for amorphous water-containing ruthenium oxides [6][7][8][9]. The great disadvantages of RuO 2 is the high cost and its low porosity structure [9][10].…”

“…Despite the antiquity, electrodeposition remains a much studied topic. Themes as supercapacitors or electrochemical cells devices have raised considerable attention [7][8][9][10][11][12][13][14][15][16][17]. In this case, the electrodeposition technique is of great interest due to their unique principles and flexibility in the control of the structure and morphology of the oxide electrodes.…”