Wenxiu Peng

Novel flower-like CoS hierarchitectures: one-pot synthesis and electrochemical properties

Novel 3D flower-like CoS hierarchitectures and CoS microspheres have been synthesized by a facile solvothermal method. A growth mechanism has been proposed for the nanostructures. Temperature and precursor concentration are the key factors influencing the nanostructures. Electrochemical measurements display high discharge capacity and excellent cycle stability.

Facile synthesis and superior supercapacitor performances of three-dimensional cobalt sulfide hierarchitectures

Formation of three-dimensional cobalt sulfide hierarchitectures through a mechanism similar to Ostwald ripening has been investigated. Electrochemical measurements reveal that the CoS1.097nanostructure exhibits superior supercapacitor performances with high specific capacitances (555 F g−1 at 5 mA cm−2 and 464 F g−1 at 100 mA cm−2) and excellent cycle life in 2 M KOH solution.

Chainlike structures assembled by Co hierarchitectures: synthesis and electrochemical properties as negative materials for alkaline secondary batteries

Chainlike structures assembled by cobalt hierarchitectures have been selectively synthesized via facile hydrothermal and solvothermal routes and electrochemically investigated as the negative materials for alkaline secondary batteries. The obtained cobalt samples exhibit high discharge capacities, excellent cycle stabilities and favorable rate capabilities. Furthermore, with the introduction of sulfur, the electrochemical properties are greatly improved.