Characterization of nanostructured nickel cobalt oxide-polyvinyl alcohol composite films for supercapacitor application

Supercapacitor performance evaluation of nanostructured Ag‐decoratedCo‐Co3O4composite thin film electrode material

“…To investigate the performance of the thin films as potential electrodes for supercapacitor applications, CV, The deviation of the shape of all the CV curves from the ideal rectangular shape of electrical double-layer capacitor (EDLC) electrode materials, and the presence of redox peaks suggests that the specific capacitance arises mainly from Faraday redox reactions indicating battery-type storage properties. 4,15,32,33 1). 5,10,17,34 Similarly, the redox pair (A3 [0.47 V], C3 [0.36 V]) is also attributed to the redox reaction of Co 3+ / Co 4+ according to Equation (2).…”

Synthesis and characterisation of an iron‐ion‐responsive coating with core–shell electrospun fibres containing a chelation agent

“…It has high tensile strength, excellent capability for film formation, emulsifying and bonding properties as well as good flexibility, biocompatibility and biodegradability. [ 60–64 ] The blank electrospun fibre, as a container for the storage of GACE, was added to the coating. The blank electrospun fibre was used only as a filler.…”

“…The shell material of the electrospun fibre (PVA) dissolved rapidly. [ 60–64 ] In addition to the water absorption by the coating, the appearance of the scratch section, which increased the surface area of the coating exposed to the 3.5 wt% NaCl solution, accelerated the dissolution of the nanofibres. Subsequently, a considerable concentration gradient of GACE between the cut‐off fibres and solution in the cracks was observed.…”

Recent progress on polyvinyl alcohol-based materials for energy conversion

“…For example, Tripathi et al fabricated nickel cobalt oxide-polyvinyl alcohol composite (NCO-PVA) films and investigated their electrochemical properties. 37 After a series of characterizations, it was revealed that the as-prepared composites possessed a hollow porous structure with a uniform distribution of NiCo 2 O 4 nanostructures in the PVA polymer matrix, which can thus display a high specific surface area for electrochemical reactions (Fig. 1a and b).…”