Dual Behaviour of Amorphous Carbon Released Electrochemically from Graphite. Issue 13 (30th August 2016)

• Record Type: Journal Article
• Authors: Oliveira, Maria C.; Viana, Ana S.; Botelho do Rego, Ana M.; Ferraria, Ana M.; Tavares, Pedro B.; Veloso, Andreia D.; Videira, Romeu A.
• Is Part Of: ChemistrySelect. Volume 1:Issue 13(2016)
• Page Start: 4126
• Page End: 4130
• Publication Date: 2016-08-30
• Subjects: Capacitors -- carbonaceous material -- electrochemistry -- electrolyte -- graphite.; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201600965
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Here we show that the main product released from graphite in the early stages of the anodic polarization is a carbon‐based salt comprised of an amorphous carbonaceous material with delocalized negative charge, counterbalanced by sodium cations. Remarkably, this material shows a dual behaviour: it behaves as an electrolyte in aqueous medium, which has the ability to enhance the capacitive properties of the electrode‐solution interface and in the solid state it can be used as an electrode material with meaningful capacitive properties. Abstract : This paper provides evidence that the main product released from graphite in the early stages of the anodic polarization is a carbon‐based salt comprised of delocalized charged negative carbonaceous material counterbalanced by sodium cations. This carbon‐based material shows a dual electrochemical behaviour: in aqueous medium it behaves as an electrolyte and in the solid state it can be used as an electrode material.