Welded-Ag-nanowires/FTO conducting film with high transmittance and its application in transparent supercapacitors

Abstract

Enhancement of the electrical properties of silver nanowire transparent conductive electrodes by atomic layer deposition coating zinc oxide Anh-Tuan Pham, Xuan-Quang Nguyen, Duc-Huy Tran et al. Abstract. Silver nanowires (AgNW)with a small diameter weresynthesized by a facile and novel polyol reduction method. Ag nanowires ink was then spun on the surface of F-doped SnO 2 (FTO) to form the AgNW/FTO conducting film. Welding treatment of the AgNW/FTO conducting film not only increased the optical transmittance from 71.9 % to 79.3 % at 550 nm and decreased the sheet resistance from 11.4 ohm sq -1 to 9.8 ohm sq -1 , but also improved the adhesivity of AgNW network on FTO substrate. Furthermore, MnO 2 nanosheets were directly deposited on welded-AgNW/FTO (wAF) substrate to prepare a transparent MnO 2 /weledAgNW/FTO (MwAF) composite electrode. The MwAF electrode displayed excellent electrochemical performance, including high specific capacitance (375 F g -1 at 5 mV s -1 ) and superior cycle stability (173.3 % of the initial capacitance after 20000 GCD cycles).