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Because of the depletion of existing fossil fuels and environmental pollution issues, securing sustainable green energy is globally becoming an important issue. To solve this problem, various complementary measures, such as solar cells, fuel cells and thermal power generation are being studied. Also, everything becomes user-centered, society is increasingly dependent on larger amount of data. In order...
In a graphene and quantum dots (QDs) hybrid structure, the graphene is known to play the role of an electrode that conducts the photoexcited carriers from the QDs to the electrodes. Thus, the yield of photocurrent of the QD ensemble is greatly enhanced [1]. However, in our study, the graphene provides a platform to control the energy relaxation of optically excited carriers from QDs. Thus, the temperature...
As the importance of applications depending on electrical energy storage devices (EESDs), including portable electronics, electric vehicles, and devices for renewable energy storage, has gradually increased, research has focused more and more on innovative energy systems for advanced EESDs in order to achieve enhanced performance. Over the past two decades, graphene-based materials have been considered...
In this article, we report a novel hybrid electrode with hierarchical architecture were synthesized via a high-throughput hydrothermal approach under low temperature. The unique hierarchical nanostructured CoNi2S4@PPY/N-3DG (CoNi2S4@PPY hierarchical core/shell network on Nitrogen-doped graphene foam) exhibits significantly promoted electrochemical performance in pseudocapacitor. This hybrid electrode...
In a semi-review paper, the achievements in using the pseudo Jahn-Teller effect (PJTE) to manipulate the puckering or buckling of the planar configuration of two-dimensional (2D) or quasi 2D structures are demonstrated using a series of molecular and extended systems as examples. First the PJTE is briefly outlined as the only source of instability and distortions of high-symmetry configurations of...
Chemically modified graphene oxides have been intensively studied in the last decade. The introduction of heteroatoms is usually not well controlled and several different functionalities are formed. In this paper we introduced dithiocarboxylic acid on the graphene oxide by its reaction with carbon disulfide as a solvent and reagent and aluminum chloride as Friedel-Crafts catalyst. The presence of...
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