Functionalised carbazole as a cathode for high voltage non-aqueous organic redox flow batteries

Abstract

Prospective high reduction potential cathode material has been proposed that can be used in non-aqueous redox flow battery application. New class of material, 3,6-dibromo-9-(p-tolyl)-9H-carbazole (3) incorporating carbazole core, showing a...

Self-Standing Porous Aromatic Framework Electrodes for Efficient Electrochemical Uranium Extraction

“…Carbazoles were the electroactive groups that could act as the redox sites in the electrocatalysis. The gain or loss of electrons could lead to the carbazole transformation between the benzenoid structure and the quinoid structure. , Further ex situ FT-IR spectra at different discharge/charge states were recorded to confirm the evolution of these structures (Figure c). After the reduction of U­(VI) in the discharging process, the characteristic peak of the electronic-like absorption of the quinoid ring appeared at 1100 cm –1 and its intensity increased gradually.…”

Direct C–H electrophilic borylation with (C6F5)2B–NTf2 to generate B–N dibenzo[a,h]pyrenes

“…5, these carbazole substituted examples do exhibit an oxidation wave at around 0.8 V, due to removal of an electron from the carbazole nitrogen. 48…”

“…5, these carbazole substituted examples do exhibit an oxidation wave at around 0.8 V, due to removal of an electron from the carbazole nitrogen. 48 The normalized optical absorption and photoluminescence spectra for compounds 1-hex, 1-F, 2-F, 1-CN, and 2-CN are shown in Fig. 6 and the absorption and emission data are given in Table 2.…”

Redox Flow Batteries: Materials, Design and Prospects

“…Kosswattaarachchi and Cook studied different combinations of anolytes and catholytes, also reporting that these combinations and their concentrations influence cycling behavior and charge-discharge profiles [176]. Mirle et al [201] proposed a carbazole-based cathode and a group of researchers from the University of Cincinnati proposed a NA-RFB based on all-PEGylated redox-active metal-free organic molecules [202]. Other than the mentioned groups, there have also been studies on ROM as a possible electroactive compound for NA-RFBs [203][204][205][206][207].…”