Dual Behaviour of Amorphous Carbon Released Electrochemically from Graphite

作者：Oliveira Maria C^*; Viana Ana S; Botelho do Rego Ana M; Ferraria Ana M; Tavares Pedro B; Veloso Andreia D; Videira Romeu A

来源：ChemistrySelect, 2016, 1(13): 4126-4130.

DOI：10.1002/slct.201600965

• Capacitors
• carbonaceous material
• electrochemistry
• electrolyte
• graphite

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.

• 出版日期2016-8-16