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

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

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)15827-15833
Number of pages7
JournalRSC Advances
Issue number36
Publication statusPublished - 2013 Sep 28
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)


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