Transition metal sulfides are an important class of materials known for their structural variety along with technologically significant electronic and catalytic properties [1]. Cobalt sulfides have been investigated as oxygen-reduction… Click to show full abstract
Transition metal sulfides are an important class of materials known for their structural variety along with technologically significant electronic and catalytic properties [1]. Cobalt sulfides have been investigated as oxygen-reduction catalyst and have the highest activity among all chalcogenides of nonprecious metals [2-3]. However, the phase diagram of cobalt sulfide is relatively complex containing several phases
               
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