According to research published in Advanced Functional Materials recently, a team led by Prof. HU Linhua. from Hefei Institutes of Physical Science (HFIPS), Chinese Academy of Science (CAS) found .
Introduction In today s fast-paced world, the demand for efficient and sustainable energy storage solutions is more crucial than ever. While most of us are familiar with.
Zinc cheap, abundant, environmentally friendly may be the answer to better batteries, but there’s a major problem: Aqueous zinc ion batteries (AZIBs) cannot match lithium-ion batteries in term .
Zinc-ion batteries with chalcogen-based (S, Se, Te) cathodes have emerged as a promising candidate for utility-scale energy storage systems and portable electronics, which have attracted rapid attention and offer tremendous opportunities owing to their excellent energy density, on top of the advantages of aqueous Zn batteries including cost-effectiveness, inherent safety, and eco-friendliness. Here, a comprehensive overview on the basic mechanism of zinc–chalcogen batteries with their great advantages and intrinsic issues is provided. More detailed recent progress is summarized and the existing challenges with promising strategies are provided as well. First, four specific types of batteries are presented, including: zinc–sulfur, zinc–selenium, zinc–selenium sulfide, and zinc–tellurium batteries. Second, the remaining challenges within chalcogen-based cathodes in the material preparation, physicochemical properties, and battery performance are summarized and discussed. Meanwh
The challenge with aqueous zinc-ion batteries (ZIBs) lies in finding suitable cathode materials that can provide high capacity and fast kinetics. Herein, two-dimensional topological Bi2Se3 with acceptable Bi-vacancies for ZIBs cathode (Cu-Bi2−xSe3) is constructed through one-step hydrothermal process accompanied by Cu heteroatom introduction. The cation-deficient Cu-Bi2−xSe3 nanosheets (≈4 nm) bring improved conductivity from large surface topological metal states contribution and enhanced bulk conductivity. Besides, the increased adsorption energy and reduced Zn2+ migration barrier demonstrated by density-functional theory (DFT) calculations illustrate the decreased Coulombic ion-lattice repulsion of Cu-Bi2−xSe3. Therefore, Cu-Bi2−xSe3 exhibits both enhanced ion and electron transport capability, leading to more carrier reversible insertion proved by in situ synchrotron X-ray diffraction (SXRD). These features endow Cu-Bi2−xSe3 with sufficient specific capacity (320 mA h g