Publications by authors named "Anna Randon-Vitanova"
The redox reaction mechanism of a poly(phenanthrene quinone)/graphene composite (PFQ/rGO) was investigated using operando attenuated total reflection infrared (ATR-IR) spectroscopy during cycling of Li and Mg batteries. The reference phenanthrene quinone and the Li and Mg salts of the hydroquinone monomers were synthesized and their IR spectra were measured. Additionally, IR spectra were calculated using DFT.
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- Organic materials are gaining popularity as sustainable electrode materials for future batteries, but their electrochemical mechanisms are not well-studied due to a lack of effective analytical techniques.
- A new in operando attenuated total reflectance infrared spectroscopy method has been developed to monitor infrared-active band changes during reduction/oxidation in lithium batteries.
- This method has been applied to analyze various organic polymers and specifically investigates the redox reaction of poly(anthraquinonyl sulfide) in magnesium batteries, revealing a mechanism involving the reduction of carbonyl bonds.
Mg batteries are a promising battery technology that could lead to safer and significantly less expensive non-aqueous batteries with energy densities comparable or even better than state-of-the-art Li-ion batteries. Although the first prototype Mg battery using stable Mo6S8 as cathode was introduced over fifteen years ago, major challenges remain to be solved. In particular, the design of high energy cathode materials and the development of non-corrosive electrolytes with high oxidative stability are issues that need to be tackled.
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