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Issue 47, 2018
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A high performance asymmetric supercapacitor based on in situ prepared CuCo2O4 nanowires and PPy nanoparticles on a two-ply carbon nanotube yarn

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Abstract

One-dimensional supercapacitors (SCs) are of great interest for future wearable electronics, but improvement in both high capacitance and high flexibility is still a challenge. Herein, we fabricate a high performance yarn asymmetric SC (ASC) using in situ prepared CuCo2O4 nanowires and polypyrrole (PPy) nanoparticles on the surface of a two-ply carbon nanotube (CNT) yarn. The parallel-shaped yarn ASC not only shows outstanding redox pseudocapacitance, including a high areal capacitance (59.55 mF cm−2), specific energy density (20 μW h cm−2) and power density (5.115 mW cm−2), but also exhibits good flexibility because of its well maintained capacitance during repeated dynamic bending states. The capacitance retention still remains 80.1% under 8000 cycles, suggesting relatively good reversibility and stability.

Graphical abstract: A high performance asymmetric supercapacitor based on in situ prepared CuCo2O4 nanowires and PPy nanoparticles on a two-ply carbon nanotube yarn

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Publication details

The article was received on 30 Sep 2018, accepted on 10 Nov 2018 and first published on 12 Nov 2018


Article type: Paper
DOI: 10.1039/C8DT03938K
Citation: Dalton Trans., 2018,47, 17146-17152
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    A high performance asymmetric supercapacitor based on in situ prepared CuCo2O4 nanowires and PPy nanoparticles on a two-ply carbon nanotube yarn

    X. Liang, Q. Wang, Y. Ma and D. Zhang, Dalton Trans., 2018, 47, 17146
    DOI: 10.1039/C8DT03938K

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