Synthesis and electrochemical study of ruthenium influenced copper oxide electrodes prepared by self anodization

Porous 3D columnar-sphere of NiO nanomaterials synthesized for supercapacitors via hydrothermal route: impact of thiourea concentration

“…In the high-frequency zone, the R s , R ct , and L are formed by the semicircle presence. 23,24 The observed values of the R s and R ct were 2.05 Ω and 19.86 Ω, respectively. Furthermore, the stability of the device was tested using GCD up to 5000 cycles, as shown in Fig.…”

“…Hence, the whole active site of the electrode materials does not participate in the redox reaction due to the insufficient electrolytic ion accumulation in the active sites. 24 With the increasing current density, the shape of the GCD was observed to be symmetrical in nature. Using the GCD data, the values of specific capacity (Sc) and Coulombic efficiency ( η ) of the electrodes were estimated by the following relations.…”

Facile synthesis of Ni(OH)2 nanoarrays on graphene@carbon fabric as dual-functional electrochemical materials for supercapacitors and capacitive desalination

“…7 Meanwhile, metal oxides/ hydroxides (such as RuO 2 , MnO 2 , Co 3 O 4 , Ni(OH) 2 and layered double hydroxides (LDHs)) and conducting polymers (such as polyaniline, polypyrrole and polythiophene) are usually considered as pseudocapacitive active species. [8][9][10][11][12][13][14][15][16][17][18][19][20] These materials can deliver relatively high capacitance, which comes from the redox process of the electrodes; however, their poor stability because of structural degradation always hinders their practical application. [21][22][23] Therefore, efforts have been made to overcome these drawbacks.…”

Structural and electrochemical study of hybrid flexible electrodes containing in-situ growth of RuO2 within PPy matrix controlled by RuCl3 % consumed during SILAR synthesis for preparation of symmetric device

“…The major problem in using ruthenium (Ru) oxides as electrode material is its cost. Hence the attempts are made to minimize the use of Ru as a dopants or to make composites to achieve higher specific capacitance and high structural and electrochemical stability [28][29][30][31][32][33][34][35][36]. Hence in order to improve the structural stability and electrochemical performance of the PPy, addition of oxides of ruthenium could worth a shot to attempt.…”