Real-time NMR studies of electrochemical double-layer capacitors

Hao Wang; Thomas K-J Köster; Nicole M Trease; Julie Ségalini; Pierre-Louis Taberna; Patrice Simon; Yury Gogotsi; Clare P Grey

doi:10.1021/ja2072115

Real-time NMR studies of electrochemical double-layer capacitors

J Am Chem Soc. 2011 Dec 7;133(48):19270-3. doi: 10.1021/ja2072115. Epub 2011 Nov 11.

Authors

Hao Wang¹, Thomas K-J Köster, Nicole M Trease, Julie Ségalini, Pierre-Louis Taberna, Patrice Simon, Yury Gogotsi, Clare P Grey

Affiliation

¹ Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.

PMID: 22044066
DOI: 10.1021/ja2072115

Abstract

(11)B NMR spectroscopy has been used to investigate the sorption of BF(4)(-) anions on a highly porous, high surface area carbon, and different binding sites have been identified. By implementing in situ NMR approaches, the migration of ions between the electrodes of the supercapacitors and changes in the nature of ion binding to the surface have been observed in real time.