Issue 36, 2013
From the journal:

RSC Advances

Rational design of a high performance all solid state flexible micro-supercapacitor on paper†

Xu Wang,a   Afriyanti Sumboja,a   Wan Ling Foo,a   Chao Yi Yan,a   Kazuhito Tsukagoshi*bc  and  Pooi See Lee*a  

* Corresponding authors

a School of Materials Science and Engineering, Nanyang Technological University, Singapore
E-mail: pslee@ntu.edu.sg

b International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, Tsukuba, Ibaraki 305–0044, Japan
E-mail: TSUKAGOSHI.Kazuhito@nims.go.jp

c CREST, JST, Kawaguchi, Saitama 305–0044, Japan

Abstract

Micro-supercapacitors have attracted considerable attention due to their feasibility as power supplies for future integration into autonomous and portable devices. However, the conventional lab-on-chip fabrication method requires multiple patterning and metallization procedures, while the rigid substrate restricts versatility in applications such as flexible and wearable electronics. Here, we report the low cost, facile and scalable fabrication process of an all solid state flexible micro-supercapacitor on commercially available photo paper for the first time. Three dimensional interconnected coral-like polyaniline–manganese oxide composite material is electrochemically deposited on the interdigital finger electrodes. Electrochemical measurements reveal that the high aspect ratio finger electrode pattern and small gap interdigital finger electrode design is crucial to ensure superior performance. The optimized device shows an ultra high areal energy density of 6.3 μW h cm−2 at a power density of 35 μW cm−2 (94.73 mF cm−2 at 0.1 mA cm−2), while it maintains 4.8 μW h cm−2 at a power density of 3500 μW cm−2 (71.43 mF cm−2 at 10.0 mA cm−2). Meanwhile, it also has good flexibility. Such a flexible micro-supercapacitor is promising for future applications in lightweight, wearable or foldable electronics.

Graphical abstract: Rational design of a high performance all solid state flexible micro-supercapacitor on paper

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Article information

DOI
https://doi.org/10.1039/C3RA41807C
Article type
Paper
Submitted
16 Apr 2013
Accepted
28 Jun 2013
First published
03 Jul 2013

RSC Adv., 2013,3, 15827-15833

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Rational design of a high performance all solid state flexible micro-supercapacitor on paper

X. Wang, A. Sumboja, W. L. Foo, C. Y. Yan, K. Tsukagoshi and P. S. Lee, RSC Adv., 2013, 3, 15827 DOI: 10.1039/C3RA41807C

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