Electrochemical properties of chemically synthesized SnO2-RuO2 mixed films

Abstract

The SnO 2 -RuO 2 mixed films are prepared by successive ionic layer adsorption and reaction (SILAR) method. The SnO 2 films combined with RuO 2 are prepared by varying the deposition cycles of SILAR. The effect of combining SnO 2 with RuO 2 on structural, morphological and electrochemical properties is studied. It is observed that the crystalline nature of SnO 2 changed to amorphous with increase in RuO 2 deposition cycles. The morphology is also changed from fibrous-porous to compact after increasing RuO 2 deposition cycles. The specific capacitance of SnO 2 is increased from 4 to 185 F/g after combined with RuO 2 . The maximum utilization of RuO 2 is observed with specific capacitance of 1010 F/g.

Research Progress on Porous Carbon Supported Metal/Metal Oxide Nanomaterials for Supercapacitor Electrode Applications

“…Since the SnO 2 adds only to the surface of the precursor spheres with the porosity, just a trace amount leads to a strong increase of C sp over the porous MnO 2 –Fe 3 O 4 . In recent days, research studies are now being devoted to making alternative electrodes including SnO 2 –Co 3 O 4 , SnS 2 –SnO 2 , SnO 2 –RuO 2 , etc. Special attention has been drawn toward these kinds of materials because they provide extraordinary energy densities from the Faradaic charge transfer compared to carbon-based materials.…”

SILAR Deposition of Metal Oxide Nanostructured Films

“…Redissolution of deposited films when exposed to solutions of the parent metal salts is a limitation especially in the case of oxides. [42,194] Lindroos et al have found that both the use of complexing agents and variation of the solution pH strongly affect the growth rate of zinc oxide films. [51] Tolstoy observed an effect of the salt concentration and suggested the use of metal precursors with a lower oxidation state for the deposition of MnO nanolayers.…”

“…The interfacial charge transfer between Bi 2 O 3 , MnO 2 and graphite, and the nanomorphology enabled by the SILAR deposition have been highlighted as the key factor in obtaining good charge storage performances. Alternative composites, including NiO-ZnO, [192] ZnO-CdO, [193] and SnO 2 -RuO 2 [194] have been fabricated targeting potential uses in solar photovoltaics, sensors and supercapacitors, respectively. Ammonia complexes of Ni and Cd were adopted in the NiO-ZnO and ZnO-CdO depositions while ZnO was initially electrodeposited.…”

Enhanced Supercapacitive Performance in Catalyst‐Free Binary Composite SnO2–RuO2 Nanostructured Thin Films for Symmetric Supercapacitor Device

“…[19] Moreover, SnO 2 shares the rutile structure and lattice parameters with RuO 2 , making it a suitable choice for composite formation, thereby offering a promising avenue for improving SC performance while mitigating costs. [42][43][44] In this study, we utilized pulsed laser deposition (PLD) to synthesize thin film electrodes of SnO 2 , RuO 2 , and their composites on stainless steel-304 (SS-304) substrates using solid targets of SnO 2 and RuO 2 . We then fabricated a symmetric supercapacitor device (SSD) using a deposited SnO 2 -RuO 2 composite thin film as both positive and negative electrodes.…”

“…[ 19 ] Moreover, SnO 2 shares the rutile structure and lattice parameters with RuO 2 , making it a suitable choice for composite formation, thereby offering a promising avenue for improving SC performance while mitigating costs. [ 42–44 ]…”