Gamma-aminobutyric acid-functionalized naphthalene diimide for aqueous organic flow batteries

Mahsa Shahsavan; Cedrik Wiberg; Pekka Peljo

doi:10.1039/d2cc03316j

Gamma-aminobutyric acid-functionalized naphthalene diimide for aqueous organic flow batteries

Chem Commun (Camb). 2022 Nov 15;58(91):12692-12695. doi: 10.1039/d2cc03316j.

Authors

Mahsa Shahsavan¹, Cedrik Wiberg¹, Pekka Peljo¹

Affiliation

¹ Research Group of Battery Materials and Technologies, Department of Mechanical and Materials Engineering, Faculty of Technology, University of Turku, 20014 Turku, Finland. pekka.peljo@utu.fi.

Abstract

An anionic gamma-aminobutyric acid-functionalized naphthalene diimide (GABA-NDI) was investigated for its possible application in flow batteries. A GABA-NDI/ferrocyanide flow battery was stable over 200 cycles and demonstrated an average coulombic efficiency of 99.96% and an excellent energy efficiency of 80.9% at 60 mA cm^-2 while accessing 95% of the theoretical capacity of GABA-NDI. An increase in solubility and stability was achieved compared to previous studies.