Wuhan University of Technology

About: Wuhan University of Technology is a education organization based out in Wuhan, China. It is known for research contribution in the topics: Microstructure & Catalysis. The organization has 40384 authors who have published 36724 publications receiving 575695 citations. The organization is also known as: WUT.

Interlayer-Spacing-Regulated VOPO4 Nanosheets with Fast Kinetics for High-Capacity and Durable Rechargeable Magnesium Batteries.

Abstract: Owing to the low-cost, safety, dendrite-free formation, and two-electron redox properties of magnesium (Mg), rechargeable Mg batteries are considered as promising next-generation secondary batteries with high specific capacity and energy density. However, the clumsy Mg2+ with high polarity inclines to sluggish Mg insertion/deinsertion, leading to inadequate reversible capacity and rate performance. Herein, 2D VOPO4 nanosheets with expanded interlayer spacing (1.42 nm) are prepared and applied in rechargeable magnesium batteries for the first time. The interlayer expansion provides enough diffusion space for fast kinetics of MgCl+ ion flux with low polarization. Benefiting from the structural configuration, the Mg battery exhibits a remarkable reversible capacity of 310 mAh g-1 at 50 mA g-1 , excellent rate capability, and good cycling stability (192 mAh g-1 at 100 mA g-1 even after 500 cycles). In addition, density functional theory (DFT) computations are conducted to understand the electrode behavior with decreased MgCl+ migration energy barrier compared with Mg2+ . This approach, based on the regulation of interlayer distance to control cation insertion, represents a promising guideline for electrode material design on the development of advanced secondary multivalent-ion batteries.

Building better zinc-ion batteries: A materials perspective

Abstract: Since they were first developed in 1899, Zn-ion batteries featuring an alkaline electrolyte became an important energy storage device, accounting for ∼80% of the batteries manufactured in the U.S. in 2010. In recent years, however, the rechargeable Li-ion batteries (LIBs) have superseded older technologies. Now, the development of non-alkaline aqueous electrolyte-based rechargeable Zn-ion batteries have demonstrated potential for use the stationary energy storage devices (ESDs) and may eventually become an indispensable component of the smart electric grid of the future. In this review, we present the fundamentals, challenges, and the latest exciting developments on Zn-ion battery research. The detailed discussion is organized around the individual parts of the system from the Zn anode to a series of important cathode materials. This review then addresses the determine-effect of the chosen electrolyte on battery performance and summarizes possible optimization strategies. Finally, several new avenues of research for Zn-ion batteries, including hybrid and flexible batteries, are reviewed.