The author provides a unified account of the electrochemical material science of metal chalcogenide (MCh) compounds and alloys with regard to their synthesis, processing and applications. Starting with the chemical fundamentals of the chalcogens and their major compounds, the initial part of the book includes a systematic description of the MCh solids on the basis of the Periodic Table in terms of their structures and key properties. This is followed by a general discussion on the electrochemistry of chalcogen species, and the principles underlying the electrochemical formation of inorganic compounds/alloys. The core of the book offers an insight into available experimental results and inferences regarding the electrochemical preparation and microstructural control of conventional and novel MCh structures. It also aims to survey their photoelectrochemistry, both from a material-oriented point of view and as connected to specific processes such as photocatalysis and solar energy conversion. Finally, the book illustrates the relevance of MCh materials to various applications of electrochemical interest such as (electro)catalysis in fuel cells, energy storage with intercalation electrodes, and ion sensing.

In this work we describe the electrodeposition of metals, chalcogenides, and metal chalcogenides from ionic liquids and investigate the fundamental electrochemical processes occurring during electrodeposition. This work covers two main projects: the electrodeposition of elemental selenium and the general electrodeposition of amorphous transition metal chalcogenides. Selenium was electrodeposited from diethyl selenite in N, N – propylmethylpiperidinium bis(trifluoromethanesulfon)imide. The electrochemical processes were investigated using in-situ UV-VIS spectroscopy and diethyl selenite was found to proceed through a step-wise reduction from Se4+→Se0→Se2−. A conformal film of amorphous elemental selenium was formed upon applying a potential of E = -1.0 V vs. Pt QRE. In addition a general procedure for the electrodeposition of group 6 transition metal chalcogenides was devised using the tetrachalcogenometallate as a single precursor for electrodeposition. Molybdenum sulfide and molybdenum selenide were electrodeposited from tetraphenylphosphonium tetrathiomolybdate and tetraselenomolybdate, respectively. In-situ UV-VIS spectroelectrochemistry revealed that these both undergo an anodic deposition of the MoE3 (E = S, Se) and a cathodic corrosion mechanism yielding MoE3−[subscript x] (0

"Held May 2000 in Toronto, Canada, as part of the 197th meeting of the Electrochemical Society."--Pref.