Issue 27, 2012

Preparation and application of TEMPO-based di-radical organic electrode with ionic liquid-based polymer electrolyte

Abstract

In this study we report the synthesis and use of new organic materials, TEMPO di-radical [1,3-bis(4-(2,2,6,6,-tetramethyl-1-oxyl-4-piperidoxyl)butyl) imidazolium trifluorosulfonate]. Two cells were prepared with Li metal anode and the TEMPO di-radical based cathode with a microporous polymer electrolyte [1-butyl-3-methyl imidazolium bis(trifluoromethane sulfonyl) imide (BMImTFSI) in 0.5 M LiTFSI, and in 1 M LiPF6 in ethylene carbonate/dimethyl carbonate (EC/DMC)] hosted in electrospun poly(vinylidenefluoride-co-hexafluoropropylene) (PVdF-HFP) membrane. The nature of the solvent was not found to affect the basic redox reaction behavior of TEMPO. The anodic and cathodic peaks were obtained at almost the same position and with some difference in the separation of peaks. The presence of BMImTFSI significantly affects the electrochemical performance of the battery as the cell having this RTIL exhibited far better electrochemical performance with 100% utilization of the active material and reasonably good cycling performance up to 200 cycles. We believe that this composite cell will contribute to organic green rechargeable batteries, although the cell is not fully organic composite.

Graphical abstract: Preparation and application of TEMPO-based di-radical organic electrode with ionic liquid-based polymer electrolyte

Article information

Article type
Paper
Submitted
27 Apr 2012
Accepted
26 Aug 2012
First published
25 Sep 2012

RSC Adv., 2012,2, 10394-10399

Preparation and application of TEMPO-based di-radical organic electrode with ionic liquid-based polymer electrolyte

J. Kim, A. Matic, J. Ahn, P. Jacobsson and C. Song, RSC Adv., 2012, 2, 10394 DOI: 10.1039/C2RA20795H

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