Layer-by-layer inkjet printing GO film and Ag nanoparticles supported nickel cobalt layered double hydroxide as a flexible and binder-free electrode for supercapacitors.

摘要: Abstract Inkjet printing is an attractive technique in the field of flexible electronics due to direct writing, digital controls and non-contact operation process. In this work, we successfully printed graphite oxide Ag nanoparticles on substrate carbon cloth form a flexible, conductive hydrophilic layer, which could be used as new with electron transport layer large surface area. addition, Ni-Co LDH nanosheets main active materials were synthesized for improving electrochemical activity via convenient deposition method. The binder-free LDH/Ag/rGO@CC electrode exhibits outstanding performance along high capacity 173 mA h g−1 at 1 A g−1. Moreover, asymmetric supercapacitor (ASC) was assembled positive activated coated CC negative materials, showing 95 mA h g−1 0.6 A g−1, maximum energy density 76 Wh kg−1 power 480 W kg−1.