Qin Lab

https://link.springer.com/article/10.1007/s12598-024-03121-w

Heterojunction structure of LiV3O8-LiV6O15 cathode material with multiple electron reactions - Rare Metals 针对传统锂离子电池正极材料离子电导率低

Construction of Artificial Interface Layer in the Fly Ash Suspension for Durable Zn Anode Zinc ion batteries (ZIBs) are an intriguing option due to their safety, nonflammability, and environmental friendliness. However, the uncontrolled formation of Zn dendrites, which can lead to short circuits, limits their broader application. In this study, we designed an artificial interface layer o...

Dual-Functional Additives Boost Zinc-Ion Battery Electrolyte over Wide Temperature Range | Energy Material Advances Traditional aqueous electrolyte systems in zinc-ion batteries (ZIBs) often face challenges such as sluggish ion transfer kinetics, dendrite formation, and sudden battery failures in harsh temperature environments. Herein, we introduce a pioneering ...

we successfully fabricated a highly stable Sn–Al sol protective layer on the surface of the zinc anode using a simple spray-coating technique. This protective layer significantly enhances the electrochemical performance of zinc symmetric cells, achieving stable cycling for over 2500 h at 1 mA cm–2. In Zn//Cu half-cells, the Sn–Al sol coating improves charge–discharge efficiency and cycling stability, with over 500 and 950 cycles at 1 and 5 mA cm–2, respectively. The average charge–discharge efficiency during stable cycling reaches 95.7%, in contrast to 85.0% for bare Zn, indicating improved utilization of Zn2+. Additionally, the Sn–Al sol coating offers enhanced corrosion resistance and effectively promotes uniform Zn2+ growth along the (101) crystal plane, reducing dendrite formation. Overall, this simple spray-coating approach presents significant potential for high-stability modifications of zinc anodes, offering a novel strategy for the industrial application of zinc-ion batteries.

(002)-oriented Zn textures are successfully deposited on the Ag@cotton cloth substrate by optimizing electroplating conditions, including the electroplating current density of 40 mA/cm2 and time of 30 min. Compared to (101)-dominated Zn, (002)-oriented Zn textures can suppress Zn dendrite growth, hydrogen evolution, and corrosion of Zn anode, resulting in more stable Zn-MnO2 full batteries.
https://doi.org/10.1002/batt.202400727

Thanks Prof Huang for this priceless gift for my new lab opening. Prof. Goodenough was a truly remarkable person, an inspiration and role model. Safer and better performing batteries are our Lab goals! Jiaqian Qin