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Solution‐based deposition of nano‐embossed metal electrodes on cotton fabrics for wearable heaters and supercapacitors
Author(s) -
Lee Sung Min,
Oh In Hyeok,
Nam Inho,
Chang Suk Tai
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6814
Subject(s) - materials science , supercapacitor , electrode , nanotechnology , deposition (geology) , fabrication , cathode , nanoparticle , chemical engineering , electrochemistry , electrical engineering , chemistry , paleontology , sediment , biology , medicine , alternative medicine , pathology , engineering
Summary Cotton fabrics have received substantial attention as promising substrates for wearable electronics due to their large surface area and flexibility. Although the majority of studies have been devoted to fabricating electrodes utilizing cotton, the simple fabrication process of highly‐conductive metal electrodes inserted in fabrics has yet to be achieved. Herein, we demonstrate the facile, electroless deposition of Au electrodes inserted in cotton by a seed‐mediated, metal‐growth strategy. The sequencable deposition of Au was achieved by the autocatalytic reduction of Au ions with Au nanoparticle seeds which were electrostatically deposited on cotton. The deposition efficiency was significantly improved by effectively removing physisorbed silane molecules on amine‐modified cotton. The design was applied to various E‐textiles, that is, wearable heaters, and energy storage devices. The cotton‐based, wearable heater exhibited excellent Joule heating properties up to 120°C at 1 V within only 2 seconds. The wearable supercapacitor with cathode‐deposited MnO 2 also demonstrated a promising, pseudo‐capacitive performance of 167.55 F g −1 at 0.3 A g −1 .