Fabrication and performance studies of a cable-type flexible asymmetric supercapacitor

Literature Information

Publication Date 2014-06-24
DOI 10.1039/C4CP00955J
Impact Factor 3.676
Authors

S. T. Senthilkumar, R. Kalai Selvan


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Abstract

In the present work a novel cable-type asymmetric supercapacitor was fabricated using plate-like β-Ni(OH)2 as the positive and activated carbon as the negative electrode, with polyvinyl alcohol–KOH (PVA–KOH) as the gel polymer electrolyte. The β-Ni(OH)2 plates were prepared by a reflux method and the activated carbon was derived from Tamarindus indica fruit shell by chemical activation. The working voltage of the fabricated cable-type asymmetric supercapacitor (ASC) was 1.4 V, and it achieved per-unit-length and gravimetric capacitances of 40.7 mF cm−1 and 37.5 F g−1 respectively at 2 mA. Besides, the fabricated ASC delivered a maximum per-unit-length (gravimetric) energy density of 10.7 μW h cm−1 (9.8 W h kg−1) at a power density of 169 μW cm−1 (154 W kg−1). In addition, it exhibited a better capacitance retention, of 88% over 1000 cylces and 76% over 2000 cycles.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

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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