Electrochemically synthesized cobalt redox active layered double hydroxides for supercapacitors development
作者： Ylea Vlamidis , Erika Scavetta , Marco Giorgetti , Nicola Sangiorgi , Domenica Tonelli
DOI: 10.1016/J.CLAY.2017.03.031
关键词:
摘要: Abstract This paper describes the electrosynthesis and characterization in alkaline solutions of two layered double hydroxides (LDHs) containing Co as divalent cation Al or Fe trivalent one on Pt supports. Cyclic voltammetry (CV) electrochemical impedance spectroscopy (EIS) experiments demonstrated a capacitive behaviour. LDHs 3+ displayed different responses, highlighting key role metal. High specific capacitances calculated from charge-discharge at current density 1 A g − 1 , were by materials resulted 854 869 F g for LDH, respectively. The long-term cycling capability was also investigated giving satisfactory results. presence improves performance LDH pseudocapacitor, especially to achieve better performances terms energy power densities. In view development low cost supercapacitors preliminary tests aimed deposit based large area graphite substrate successfully carried out.
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