Publications by authors named "Wansu Zheng"
Silicon (Si) is considered the most promising anode material for the next generation of lithium-ion batteries (LIBs) because of its high theoretical specific capacity and abundant reserves. However, the volume expansion of silicon in the cycling process causes the destruction of the electrode structure and irreversible capacity loss. As a result, the commercial application of silicon materials is greatly hindered.
View Article and Find Full Text PDFFlexible aqueous supercapacitors are promising candidates as safe power sources for wearable electronic devices (WEDs). However, the absence of advanced electrode materials with high structural stability has become the most critical factor hindering the development, which is closely related to the poor interface combination between the active substances and flexible collectors. Herein, a unique rigid layered double hydroxide (LDH) nanorod array with the mesocrystalline feature is created using the NiO-Ni layer as the inducer by the electrodeposition strategy.
View Article and Find Full Text PDFArticle Synopsis
- The study focuses on transitional metal chalcogenides (TMCs) as high-capacity materials for asymmetric supercapacitors, highlighting their charge storage mechanisms similar to hydroxides but with enhanced capacity.
- A novel heterostructure of Ni Co Mn S/Ni(SeO) (NCMS/NSeO) is developed on Ni-plated carbon cloth, demonstrating that both components can transform into hydroxides during electrochemical processes, which aids in understanding their capacity.
- The optimized electrodes show impressive performance, achieving a high capacity of 536 mAh/g at 1 A/g, and the assembled supercapacitor reaches an energy density of 141 Wh/kg with excellent retention