Investigating the asymmetry in the EDL response of C60/graphene supercapacitors

Literature Information

Publication Date 2019-06-27
DOI 10.1039/C9CP02664A
Impact Factor 3.676
Authors

Eudes Eterno Fileti


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Abstract

Development of efficient electrodes is one of the main ways to increase the performance of an electrochemical energy storage device. It is known that such performance is associated with the electrode specific area, which allows a much larger interfacial interaction with the electrolyte. In this work, molecular dynamics is employed to model C60/graphene composite electrodes that can expand the effective area by approximately 70% relative to a pure graphene electrode. Our simulations indicate that the performance of supercapacitors of C60/graphene electrodes is superior to those made of planar graphene, in some cases up to 150%. The inherent electrolyte asymmetry in the investigated supercapacitors has a negative effect on the total capacitance, indicating that even better results could be obtained after rational design of the fullerene density on the surface of the graphene as well as the choice of the ions in the liquid ionic composition.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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