Operandoanalysis of graphite intercalation compounds with fluoride-containing polyatomic anions in aqueous solutions

Abstract

Affinity of fluoride-containing polyatomic anions for the formation of graphite intercalation compounds (GICs) in aqueous solutions was investigated by operando analysis.

Insights into the Interlayer Water-Induced Reversible Proton Insertion and Deinsertion in Ruddlesden–Popper Layered Fe Oxides

“…Operando XRD and XAS measurements were performed using a three-electrode cell. For the operando XRD measurement that was carried out using RINT-2200, a home-made operando cell reported previously was used . The composite electrode for the WE was fabricated by mixing the active material LSFO, the conductivity aid Vulcan XC-72, and PVdF at 80:10:10 (by weight).…”

“…For the operando XRD measurement that was carried out using RINT-2200, a home-made operando cell reported previously was used. 63 The composite electrode for the WE was fabricated by mixing the active material LSFO, the conductivity aid Vulcan XC-72, and PVdF at 80:10:10 (by weight). The mixture was coated onto polyethylene naphthalate (25 μm thick) and then dried.…”

Electrochemical In Situ/<i>operando</i> Spectroscopy and Microscopy Part 2: Battery Applications

“…Our group has also observed electrochemical behaviors of anion GICs in organic electrolytes and concentrated aqueous electrolytes. [64][65][66] For example, by comparing operando Raman spectra of anions containing CF 3 moiety (SO 3 CF 3 ¹ (OTf ) and [N(SO 2 CF 3 ) 2 ] ¹ (TFSA)), TFSA-GIC showed smaller stage number at the end of charge, while its charge-discharge reversibility was poorer than that of OTf-GIC. On the other hand, both anion GICs showed smaller stage numbers at their surface determined by Raman than those in their bulk determined by XRD (Fig.…”