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Solution‐Processed Metal Coating to Nonwoven Fabrics for Wearable Rechargeable Batteries
Author(s) -
Lee Kyulin,
Choi Jin Hyeok,
Lee Hye Moon,
Kim Ki Jae,
Choi Jang Wook
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201703028
Subject(s) - materials science , coating , electrical conductor , anode , bending , cathode , electrode , composite material , textile , composite number , porosity , current collector , nanotechnology , wearable technology , wearable computer , computer science , electrolyte , chemistry , embedded system
Wearable rechargeable batteries require electrode platforms that can withstand various physical motions, such as bending, folding, and twisting. To this end, conductive textiles and paper have been highlighted, as their porous structures can accommodate the stress built during various physical motions. However, fabrics with plain weaves or knit structures have been mostly adopted without exploration of nonwoven counterparts. Also, the integration of conductive materials, such as carbon or metal nanomaterials, to achieve sufficient conductivity as current collectors is not well‐aligned with large‐scale processing in terms of cost and quality control. Here, the superiority of nonwoven fabrics is reported in electrochemical performance and bending capability compared to currently dominant woven counterparts, due to smooth morphology near the fiber intersections and the homogeneous distribution of fibers. Moreover, solution‐processed electroless deposition of aluminum and nickel–copper composite is adopted for cathodes and anodes, respectively, demonstrating the large‐scale feasibility of conductive nonwoven platforms for wearable rechargeable batteries.