A series dual function of quasi-solid-state gel electrolytes with high conductivity and good catalytic ability were prepared by integrating the carbon nanotubes (CNTs) and conducting polymers including polypyrrole (PPy), polyaniline (PANI) and poly (3,4-ethylenedioxythiophene) (PEDOT) into poly (acrylic acid) (PAA) gel, showing significant improvement in electrochemical and photoelectrochemistry capability used in dye-sensitized solar cells (DSSCs). These novel electrolytes provide three dimensional network structures for transporting electrons, giving a similar conduction mechanism to that of liquid electrolyte system. The electrochemical performance of the CoS/AgiTi counter electrode (CE) was evaluated by electrochemical impedance spectroscopy, which revealed that the CoS/Ag/Ti CE exhibited excellent electrocatalytic ability for these novel electrolytes as well as that of in I-/I- liquid system. The quasi solid-state flexible DSSC fabricated with the CoS/AgiTi CE and novel gel electrolytes integrated PPy, PANI and PEDOT achieved enhanced power conversion efficiency of 6.89%, 7.01% and 7.20% under the irradiation of 100 mW cm(-2), which have much approached that of the DSSC (7.35%) based on Pt electrode and I I-/I-3(-) liquid electrolyte. (C) 2017 Elsevier Ltd. All rights reserved.