Effective charge propagation and storage in hybrid films of tungsten oxide and poly(3,4-ethylenedioxythiophene)

Mixed layered WO3/ZrO2 films (with and without rhodium) as active supports for PtRu nanoparticles: enhancement of oxidation of ethanol

“…Electrodeposition of conventional tungsten oxide film [77] was achieved at the glassy carbon electrode surface by introducing the pre-cleaned electrode substrate to 10 mmol dm À3 Na 2 WO 4 in 2 mol dm À3 H 2 SO 4 and, later, by application of 15 full voltammetric potential cycles at 50 mV s À1 in the potential range from 0.04 to 1.04 V.…”

“…Because it would be difficult to elucidate the value of C 0 (concentration of mixed-valent W VI,V sites), particularly, for the mixed WO 3 /ZrO 2 film, the [D app 1/2 C 0 ] kinetic parameters [77], rather than D app , have been estimated here (Fig. 3B) from the slopes, [Q/t 1/2 ].…”

“…While electrodeposition of the inner (i.e. adjacent to the glassy carbon electrode substrate) mixed-valent tungsten(VI,V) oxide film was performed according to the well-established procedure described earlier [10,[36][37][38]41,77], deposition of the outer ZrO 2 film was achieved by sol-gel aggregation induced by voltammetric cycling [21][22][23]. The Inset (lower) to Fig.…”

Synthesis and electrochemical characterization of poly(3,4-ethylenedioxythiophene) modified by iron hexacyanocobaltate

“…Progress in the energy storage devices is largely dependent on the development of optimized electrodes [1,2,8]. There is a growing interest in hybrid materials combining two kinds of components [9][10][11][12][13][14]. A popular approach is to combine an organic conducing polymer with inorganic redox compounds [11,12,15].…”

“…layer-by-layer deposition, simultaneous deposition of two or more components obtaining bulk films, one-pot chemical synthesis and simple mechanical mixing of components. However, regardless of the method, exploiting a chemical or electrostatic interaction between components may lead to obtain stable and robust materials [11,15].…”