Polyaniline (PANI)-silver complex was obtained from in situ reduction of hydrochloric acid-doped PANI by the addition of sodium borohydride. The morphology and structure of the complex were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. Four-probe measurements and thermogravimetric analysis were employed to investigate electrical conductivity, thermal stability, and silver content. Conductivity of the PANI-silver composite was up to 535.22 S cm(-1) and silver content was 38.48 wt % as determined from the molar ratio of sodium borohydride to silver nitrate of 1.2 used during the synthesis. (c) 2013 Wiley Periodicals, Inc.