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Advanced functional materials: Research Progress of key electrode / electrolyte interface in rechargeable batteries

wallpapers Cruise 2020-08-09
The invention of

rechargeable battery whether it is the early lead-acid battery Ni MH battery Ni Cd battery or the current widely used lithium-ion battery has significantly changed our way of life especially in the field of mobile life. Mobile phones laptops new energy vehicles all kinds of digital products have accelerated our cooperation communication development. Lithium ion batteries play the "heart" function of devices both in the field of mobile travel in the field of mobile digital electronic products equipment. The academic community is also in the process of continuous research development for the battery system with higher specific energy especially the research on new systems such as solid-state battery lithium sulfur battery lithium air battery based on metal lithium anode. The development of battery is inseparable from the invention of positive negative electrode materials. Similarly the electrode / electrolyte interface also plays an important role in the development of battery. Both the academic industrial circles attach great importance to the important function of electrode interface in battery life. However most of the researches on electrode interface are focused on the nanoscale. Due to the limitations of research technology the dynamic characteristics of the interface with time potential the understing of the interface in the field is still in its infancy. The development process research ideas of electrode / electrolyte interface need to be systematically sorted out summarized.

Professor Huang Jiaqi his research team of Beijing University of technology have always focused on the electrode / electrolyte field which is very difficult to study. In recent years they have carried out a lot of original research work broadened the new understing of the formation mechanism of the interface proposed the control strategy related design criteria of artificial interface design. At the special invitation of advanced functional materials Professor Huang Jiaqi his research team recently published a research progress report entitled "toward critical electrode / electrolyte interfaces in rechargeable batteries" which comprehensively reviewed the formation mechanism control methods of the electrode / electrolyte interface of rechargeable batteries.

this paper reviews the research progress of positive solid-liquid electrolyte interface (CEI) negative solid-liquid electrolyte interface (SEI) in rechargeable systems in recent years (Fig. 1). In view of the possible formation mechanism of the electrode / electrolyte interface two key factors affecting the formation of the interface were proposed: the initial species adsorption on the electrode surface the solvation coordination structure of the electrolytic liquid phase. Meanwhile the current structure chemical composition possible transport mechanism of the interface were discussed systematically the effects of different structural characteristics different components were analyzed Finally the author summarizes the key behaviors of the interface in the future. This work is helpful to improve the basic understing of the interface in the field exp the subject knowledge provide a reasonable scientific basis for the design of electrode / electrolyte interface inspire the reasonable design of long-term cycle rechargeable battery.

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