Transformation of Battery to High Performance Pseudocapacitor by the Hybridization of W₁₈O₄₉ with RuO₂ Nanostructures

Abstract

Defects such as oxygen vacancy in the nanostructures have paramount importance in tuning the optical and electronic properties of a metal oxide. Here we report the growth of oxygen deficit tungsten oxide (W18O49) nanorods modified with ruthenium oxide (RuO2) using a simple and economical hydrothermal approach for energy storage application. In this work, a novel approach of hybridizing the W18O49 nanostructure with RuO2 to control the electrochemical performance for energy storage applications has been proposed. The result displays that the hybridization of the nanostructures plays an important role in yielding high specific capacitance of the electrode material. Due to the augmentation of W18O49 and RuO2 nanostructures, the galvanostatic charging and discharging (GCD) mechanism exhibited the transformation from the battery type characteristics of W18O49 into the typical pseudocapacitor feature of hybrid architect nanostructure due to defect creations. The electrochemical measurement of hybrid nanomaterial shows the doubling of specific capacitance to 1126 F/g and 1050 F/g in cyclic voltammetry (CV) and GCD, respectively, in comparison with W18O49 and RuO2 and earlier reports. The enhancement in the stability performance up to 3000 cycles of hybrid is indebted to the stable nature of W18O49 and the high conductivity of RuO2.

Transition metal oxides as a cathode for indispensable Na-ion batteries

“…Still, it is difficult to stabilize the structure and enhance the electrochemical performance of the cathode material to satisfy the requirements of the practical application. 24,25 Based on the chemical replacement of the prototypical cathode, LiCoO 2 the structure of cathode materials in most of the best performing lithium-ion batteries is layered two-dimensional crystallographic. 26 Fig.…”

“…Their portability (for smaller sizes) and the capacity to immediately provide electrical power is the most convenient property. 8–10 A single cell of the battery is composed of an electrolyte, a separator, a negative electrode, and a positive electrode as presented in Fig. 1.…”

Physicochemical Approaches for Thin Film Energy Storage Devices through PVD Techniques

“…However, to meet the greater necessities of upcoming systems, Researchers need to expand their performance by designing novel materials with high energy and power density concurrently. In the past few years, widespread activities have been defined to emphasize for the capable and simplistic progressions to fabricate thin, stretchable, and signifigant solid-state flexible batteries and supercapacitors, which are well thought-out as one of the opted candidates for most promising power sources in many of the portable and microelectronic applications [7][8][9].…”

RuxBi1‐x‐oxide as an electrode material for pseudocapacitors

“…[ 36–38 ] It has also been reported that producing RuO 2 ‐based MMOs might also contribute to the overall stability of the electrode materials. [ 39,40 ]…”

“…[36][37][38] It has also been reported that producing RuO 2 -based MMOs might also contribute to the overall stability of the electrode materials. [39,40] In this work, Ru-based MMO electrodes containing different ratios of Bi-and Ru-oxide have been produced by thermal decomposition, and the effect of the Ru/Bi ratio on their charge storage/delivery performance is presented. Ru was chosen due to its superior charge storage/delivery capabilities, while Bi-oxide was chosen because of its excellent electrochemical properties, low-cost, and non-toxic nature.…”