Effect of strontium doping on the electrochemical pseudocapacitance of Y_1−xSr_xMnO_3−δ perovskites

Abstract

Grid-scale bulk energy storage solutions are needed to utilize the full potential of renewable energy technologies. Pseudocapacitive electrochemical energy storage can play a vital role in developing efficient energy storage...

Tailoring the Perovskite Structure to Acquire an Inorganic La2NiCrO6 Double Perovskite as an Efficient Energy Storage Application by Varying Molar Concentrations of Citric Acid

“…The b value corresponds to 0.5, which stands for the battery-type behavior or diffusion-controlled faradaic process; the b value corresponds to 1, representing the capacitive behavior or surface-controlled process. The b value is determined using eq . It is obtained by calculating the slope of the plot log­( i (ν)) vs log ν as shown in Figure b.…”

“…The b value is determined using eq 6. 42 It is obtained by calculating the slope of the plot log(i(ν)) vs log ν as shown in Figure 10b. For the anodic scan at 0.5 V and cathodic scan at 0.33 V, the b value is nearly equal to 0.5 (0.541 for 0.5 V and 0.540 for 0.33 V), which indicates that diffusion contribution is dominant.…”

Investigation of the Role of 3d-4d Elements in a Disordered Double Perovskite toward Efficient Photocatalytic Energy Conversion and Electrochemical Energy-Storage Behaviors

“…The nonlinear triangular shape of the GCD plots further confirms both EDLC and pseudocapacitance contributions of the present electrode materials and is well harmonized with their CV results. 18,19,[21][22][23][24][25]29,31,32,34 The specific capacitance of the active composite materials can also be derived from the charge/discharge (GCD plots) experiments using eq 2 29,32,63,64 :…”

“…29,31,32,34 Furthermore, the GCD plots of each composite material do not exhibit any significant iR drop in both the electrolyte mediums, which clearly demonstrate that a very negligible internal resistance can be generated at the interface of electrodes and electrolytes. 18,19,[21][22][23][24][25]32,34,63,64 Such a lower internal resistance can prevent extra heat generation during the charge/discharge processes and also restrict the loss of energy which is another important requisite for the energy-storage device applications. 18,19,21−25 It is common to note that the specific capacitance values of all electrode materials were decreased with the elevation of current density.…”

Pseudocapacitive Properties of Isostructural Oxides Sr2LaBMnO7 (B=Co, Fe)

“…[8] Among various materials that have been explored for energy applications, perovskite-related oxides have emerged as a promising family of materials. [9][10][11][12] They have been studied for a number of applications, such as in solid oxide fuel cells, owing to their structural stability at high temperatures and the wide range of ionic and electrical conductivities, [13] which can be tuned for either electrode or electrolyte purposes. In addition, perovskites and related oxides are promising candidates for a variety of other applications, including in batteries, capacitors, [6] and water electrolyzers.…”