Capacity of a glassy carbon electrode in propylene carbonate based electrolytes

Capacity of a glassy carbon electrode in propylene carbonate based electrolytes

Peer-reviewed article not indexed in WoS or Scopus

The capacity of glassy carbon in aprotic salt solutions in propylene carbonate (PC) is investigated as an approach to the optimalisation of electrochemical supercapacitors. The strong influence of water residuum on capacities at negative potentials is indicated. The capacities exhibit a shallow minimum at potential from 0 V to +0.5 V (vss. Cd/Cd2+ reference electrode) and they increase with increasing electrolyte concentration. The admittance of the electrode in pure PC (as received) is by 2 - 3 orders of magnitude smaller. Undoubtedly, the properties of ions in solution influence the capacity by a factor not exceeding 2 to 5.

The capacity of glassy carbon in aprotic salt solutions in propylene carbonate (PC) is investigated as an approach to the optimalisation of electrochemical supercapacitors. The strong influence of water residuum on capacities at negative potentials is indicated. The capacities exhibit a shallow minimum at potential from 0 V to +0.5 V (vss. Cd/Cd2+ reference electrode) and they increase with increasing electrolyte concentration. The admittance of the electrode in pure PC (as received) is by 2 - 3 orders of magnitude smaller. Undoubtedly, the properties of ions in solution influence the capacity by a factor not exceeding 2 to 5.

Glassy carbon, capacity, electrolyte, propylene carbonate

Glassy carbon, capacity, electrolyte, propylene carbonate

VONDRÁK, J.; SEDLAŘÍKOVÁ, M.; MACALÍK, M.; VELICKÁ, J.

2011

07.12.2010

1802-4564

ElectroScope - http://www.electroscope.zcu.cz

2010

4

Czech Republic

2-1

2-4

4