Phys.org April 14, 2022
Low temperature aqueous batteries (LT-ABs) have attracted extensive attention in recent years. However, they suffer from electrolyte freezing, slow ionic diffusion and sluggish interfacial redox kinetics at low temperature. In a review article researchers in China discussed the physicochemical properties of aqueous electrolytes in terms of phase diagram, ion diffusion and interfacial redox kinetics to guide the design of low temperature aqueous electrolytes (LT-AEs). They introduced the characteristics of equilibrium and non-equilibrium phase diagrams to analyze the antifreezing mechanisms and propose design strategies for LT-AEs. To understand and regulate the ion diffusion kinetics they reviewed the temperature/concentration/charge carrier dependence conductivity characteristics in aqueous electrolytes. They proposed potential improvement strategies for interfacial redox kinetics in LT-AEs design strategies for developing high performance LT-ABs…read more. Open Access TECHNICAL ARTICLE
Three different typical MXene electrodes, Nb2C, Ti2C and Ti3C2… Credit: Nano Research Energy. Credit: Nano Research Energy, 21 March 2022