4th Regional Symposium on Electrochemistry of South-East Europe, May 26-30, 2013 Ljubljana, Slovenia Maintaining the tradition of previous conferences, this 4th RSE-SEE meeting was intended to gather researchers researchers from scientific and industrial institutions to present and communicate their newest results, to create personal contacts, to promote research, to find possibilities of cooperation in bilateral or multilateral projects, and to stimulate the participation of doctoral students. The conference has covered broad aspects of electrochemistry fields in order to stimulate and promote research on all core topics of traditional and emerging research areas of electrochemistry. RSE SEE 4 was organized by Centre of Excellence for Low-Carbon Technologies and National Institute of Chemistry SATELLITE STUDENT REGIONAL SYMPOSIUM ON ELECTROCHEMISTRY - SSRSE PhD and postdoctoral students of electrochemistry presented their work at the one-day Satellite Student Regional Symposium on Electrochemistry, which traditionally held a day before the Symposium, on Sunday, May 26, 2013. RSE SEE 4 SCIENTIFIC COMMITTEE Co-Chairs:Miran Gaberšček, National Institute of Chemistry and Centre of Excellence for Low-CarbonTehnologies, Ljubljana, SloveniaIngrid Milošev, Jožef Stefan Institute, Ljubljana, Slovenia Members:Višnja Horvat-Radošević, Ruđer Bošković Institute, Zagreb, CroatiaJanko Jamnik, National Institute of Chemistry, Ljubljana, SloveniaSvetomir Hadži Jordanov, Faculty of Technology and Metallurgy, Ss. Cyril and Methodius University, Skopje, MacedoniaGyőző G. Láng, Institute of Chemistry, Eötvös Loránd University, Budapest, HungaryVesna Mišković-Stanković, Faculty of Technology and Metallurgy, University of Belgrade, SerbiaLiana Muresan, Babes-Bolyai University, Cluj-Napoca, RomaniaBranislav Nikolić, Faculty of Technology and Metallurgy, University of Belgrade, SerbiaEmil Paleček, Institute of Biophysics, Czech Academy of Sciences, Brno, Czech RepublicZdravko Stoynov, Institute of Electrochemistry and Energy Systems, Bulgarian Academy of Sciences, Sofia, BulgariaEleonora-Mihaela Ungureanu, University Politehnica of Bucharest, Romania Number of participants: approximately 100 The Symposium venue was Austria Trend Hotel Ljubljana Hotel Ljubljana.