Tailored MnMoO4-Nb2C architecture as electrode material for supercapattery application

Nowadays, immense attention has been paid toward the rational design and synthesis of high-power density electrodes materials for high-power supercapattery applications. In the present work, ZnFe2O4 nanostructures with unique cauliflower-like morphology were deposited on a flexible nickel foam substrate using a simple, cost-effective, and environmentally friendly electrodeposition method. The synthesized nanostructures were thoroughly examined by using structural, morphological, and electrochemical characterization techniques. Electrochemical studies of cauliflower-like nanostructured ZnFe2O4 electrode show a deviation from normal behavior and favored a mixed supercapacitor-battery-type nature. The value of specific capacity is obtained as 513 C g−1 at a current density of 1 Ag−1. The cauliflower-like nanostructured ZnFe2O4 electrode exhibits remarkable energy density and power density of 8.72 Wh kg−1 and 306.25 W kg−1 , respectively. Also, it shows long-term cyclic stability up to 5000 cycles with a maximum capacitance retention rate of 72%. These results signify that the high electrochemical performance and excellent stability of the cauliflower-like nanostructured ZnFe2O4 electrode material relate to their unique architecture, high energy, and power density for supercapattery devices.

Recent advancements in electrode materials have significantly improved the performance and efficiency of supercapattery devices. By offering a unique combination of high energy density, high power density and fast charging capability, supercapattery is ideal for a variety of applications ranging from electric vehicles to consumer electronics. This article reviews the key progress in electrode material design and composition for supercapattery application. Various types of materials employed to enhance the specific capacity, stability and conductivity of supercapattery electrodes is discussed. Furthermore, an overview of the challenges associated with the development of electrode material and corresponding strategies employed to overcome these challenges is presented. Overall, this review highlights the recent advancements in electrode materials for supercapattery and future research directions and opportunities in this exciting field.

Cobalt hydroxide nanosheets have been synthesized via facile and affordable simple chemistry route without any additives for structure design. Co(OH)2 nanosheets exhibit a maximum specific capacity of 111 C g−1 at a current density of 0.5 A g−1. Asymmetric supercapacitor (Co(OH)2//AC) has been fabricated and it delivers the specific capacitance of 34 F g−1 with the power density of 300 W kg−1 at a current density of 1 A g−1. These profitable features of cobalt hydroxide nanosheets prepared in the present work are quite promising electrode material for high-performance supercapatteries.

Electrochemical performance of ANiO3 (A= La, Ce) perovskite oxide material and its device performance for supercapattery application

Magnetron sputtered tungsten di-sulfide: An efficient battery grade electrode for supercapattery devices

Capacitive and diffusion-controlled mechanism of strontium oxide based symmetric and asymmetric devices