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All‐Solid‐State, Washable, Wearable Supercapacitors Fabricated by using a Fibrous Graphite Network and Self‐Adhering Architecture
Author(s) -
Park Soomin,
Yoo Young Geun,
Nam Inho,
Bae Seongjun,
Yi Jongheop
Publication year - 2014
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201402036
Subject(s) - supercapacitor , materials science , capacitance , electrolyte , electrode , nanotechnology , graphite , composite material , chemistry
An all‐solid‐state, completely foldable, washable supercapacitor system fabricated by using a taping method is reported. A constructed graphitic fiber network derived from conventional graphite felt was readily assembled into a full‐cell by utilizing self‐adhering architecture. The as‐prepared system exhibits good mechanical properties under various folding motifs, and the supercapacitor is washable without capacitance fading by virtue of the robust electrical connectivity of the fibrous graphite network and intimate contact between the polymeric gel electrolyte and the electrodes. A simple surface oxidation of the electrode greatly enhances the capacitance of the system (≈313 μF cm −2 ) by reducing the charge separation distance at the electrolyte/electrode interface. The results suggest that this supercapacitor system is a promising candidate for practically available and wearable energy storage systems with high cost effectiveness and scalability.