Issue 9, 2017

Pencil-drawing assembly to prepare graphite/MWNT hybrids for high performance integrated paper supercapacitors

Abstract

As a promising solution for the next generation of flexible and disposable electronics, paper-based devices are being studied intensively. However, as one of the cores of paper-based devices, many reported supercapacitors (SCs) suffer from disadvantages such as cumbersome fabrication, complicated packaging, low power density etc. Here we demonstrate a facile and scalable method to fabricate paper-based SCs by an improved pencil drawing strategy. The multi-walled carbon nanotubes are directly assembled onto pencil graphite flakes to form controllable graphite/MWNT frameworks, which act as high-performance electrodes. These SCs can deliver a power density of up to 15.1 W cm−3 and cycle at a scan rate of up to 150 V s−1, which are among the highest values achieved for any paper-based SCs. To demonstrate their applicable power/energy densities, the SCs are applied in series to drive LED and wireless sensor systems based on Bluetooth technology.

Graphical abstract: Pencil-drawing assembly to prepare graphite/MWNT hybrids for high performance integrated paper supercapacitors

Supplementary files

Article information

Article type
Paper
Submitted
22 Nov 2016
Accepted
31 Jan 2017
First published
31 Jan 2017

J. Mater. Chem. A, 2017,5, 4719-4725

Pencil-drawing assembly to prepare graphite/MWNT hybrids for high performance integrated paper supercapacitors

Y. Yu and J. Zhang, J. Mater. Chem. A, 2017, 5, 4719 DOI: 10.1039/C6TA10076G

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