Selective deposition of metal oxide nanoflakes on graphene electrodes to obtain high-performance asymmetric micro-supercapacitors

Abstract

Interdigitated asymmetric micro-supercapacitors based on Fe2O3 and MnO2 were selectively fabricated by a facile pulse current deposition (PCD) approach.

Structure-engineering of core–shell ZnCo2O4@NiO composites for high-performance asymmetric supercapacitors

“…6(a), (b), and (c), respectively, indicating that the pair of redox peaks becomes unapparent due to the synergistic effect of NiO with ZCO, and the absence of redox peaks species that a charge-discharge process occurs at a constant rate over the entire potential window. 29,30 The area under the CV curve of NZ-1 is larger than those of NZ-0.5, NZ-2, as well as pristine ZCO, indicating that NZ-1 may exhibit excellent electrochemical performance, and it increases gradually with an increase in scan rate. The redox reactions accompanied with ZCO and NiO can be represented by the following equations:…”

Recent advances in solid‐state supercapacitors: From emerging materials to advanced applications

“…364 Emerging 3D-printing techniques have also been adapted to the fabrication of SSCs. 365 Regarding micro-SSCs, various fabrication processes have been developed to produce thin-film electrodes, including photolithography, [366][367][368] printing (eg, ink-jet printing, 369,370 screen printing, 234,371 spray printing 57 ), direct laser writing 372 and laser etching, 372,373 sputtering, 374,375 spray deposition. 376 The interested readers are referred to review articles focusing on the fabrication of micro-SSCs for further details of these techniques.…”

Surface chemistry and structure manipulation of graphene-related materials to address the challenges of electrochemical energy storage

“…9(e)). 38 Taking advantage of the conductivity of EG, MnO x or FeOOH nanoflakes could be electrodeposited on the EG pattern using pulse current deposition. Fe 2 O 3 or MnO 2 was finally obtained by annealing at 300 1C.…”