Polymeric　pyrrole-sodium　lauryl　sulfonate　(PPy-SLS)　composite　film　was　applied　to　the　preparation　of　palladium/foam-nickel　(Pd/foam-Ni)　electrode.　The　prepared　Pd/PPy-SLS/foam-Ni　electrode　was　characterized　by　cyclic　voltammetry　(CV),　scanning　electron　microscope　(SEM),　X-ray　diffraction　(XRD),　inductively　coupled　plasma-atomic　emission　spectroscopy　(1CP-AES),　and　X-ray　photoelectron　spectroscopy　(XPS).　The　addition　of　SLS　improved　the　polymerization　of　pyrrole　to　form　PPy-SLS　film,　which　was　conducive　to　prepare　small　Pd　microparticles　and　led　to　the　lower　Pd　loading,　0.85　mg　cm(-2).　The　composite　electrode　was　used　for　electrochemically　reductive　dechlorination　of　2,4-dichlorophenol　(2,4DCP)　in　aqueous　solution.　The　influences　of　dechlorination　current　and　initial　pH　value　on　the　conversion　efficiency　and　current　the　efficiency　of　2,4-DCP　dechlorination　were　studied.　Complete　dechlorination　could　be　achieved　on　the　Pd/PPy-SLS/foam-Ni　electrode　at　ambient　temperature　under　the　condition　of　dechlorination　current　of　5　mA　and　initial　pH　value　of　2.5　within　50　min.　The　electrode　exhibits　promising　potential　for　dechlorination　with　high　catalytic　activity,　good　stability　and　low　cost.　(C)　2014　Elsevier　Ltd.　All　rights　reserved.