Open AccessThin Film Energy Storage Device with Spray‐Coated Sliver Paste Current Collector
Author(s) -
Yoon Seong Man,
Jang Yunseok,
Jo Jeongdai,
Go Jeung Sang
Publication year - 2017
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.2017-0086
Subject(s) - current collector , materials science , fabrication , current (fluid) , optoelectronics , foil method , energy storage , thin film , substrate (aquarium) , capacitor , electrical engineering , voltage , composite material , nanotechnology , electrode , engineering , chemistry , electrolyte , medicine , power (physics) , alternative medicine , physics , oceanography , pathology , quantum mechanics , geology
This paper challenges the fabrication of a thin film energy storage device on a flexible polymer substrate specifically by replacing most commonly used metal foil current collectors with coated current collectors. Mass‐manufacturable spray‐coating technology enables the fabrication of two different half‐cell electric double layer capacitors ( EDLC ) with a spray‐coated silver paste current collector and a Ni foil current collector. The larger specific capacitances of the half‐cell EDLC with the spray‐coated silver current collector are obtained as 103.86 F/g and 76.8 F/g for scan rates of 10 mV/s and 500 mV/s, respectively. Further, even though the half‐cell EDLC with the spray‐coated current collector is heavier than that with the Ni foil current collector, smaller Warburg impedance and contact resistance are characterized from Nyquist plots. For the applied voltages ranging from −0.5 V to 0.5 V, the spray‐coated thin film energy storage device exhibits a better performance.