Opportunity
Rechargeable batteries with low cost, high capacity and high safety are highly desired for next generation grid-scale applications and flexible electronics. Multivalention batteries based on Zn2+, Mg2+, and Al3+ have been considered as promising and safe energy- storage alternatives for lithiumion batteries (LIBs). Among them, aqueous rechargeable zinc ion batteries (ZIBs) have gained incremental attention due to the unique properties of Zn, including high abundance, low price, high specific capacities, highly reversible dissolution and deposition in neutral electrolytes containing Zn2+, relatively low oxidation-reduction potential, and decent stability in water. However, very few cathode materials such as manganese based materials and vanadium-based materials have been explored for reversible ZIB system and many of them show either poor cycling performance or limited specifie capacity.
Therefore, the portable or flexible electronics manufacturers in the world is in urgent need of a highly reliable, safe and low-cost energy storage device with good electrochemical performance. The invented battery technology provides a good solution to their needs. This invention is also able to apply in large-scale energy storage, transpo rtation and med ic al diagnostics.
Technology
Molybdenum disulfide (MoS2), a famous two-dimensional (2D) transition metal dichalcogenide, has attracted extraordinary attention as a versatile electrode material for energy storage and conversion. The unique layered structure bonded by weak van der Waals' forces makes MoS2 a promising host material for ion intercalation. This invention discloses a rechargeable Zn/MoS2 battery, which comprises a positive electrode formed from MoS2 which can store and release zinc ions (Zn2+ ions) ; a negative electrode of zinc; an aqueous mild electrolyte contains zinc ions . This battery is much more economical to manufacture, since the assembly process can be carried out in open atmosphere and does not need water and oxygen-free environment or any other protection measures, which is very beneficial for scaling up. This rechargeable battery hold great potential for large-scale energy storage applications and portable or flexible electronic devices.
Advantages
- Can be manufactured in open atmosphere and is beneficial for scaling up
- The battery is low cost, safe, and environmentally-friendly power source
- Flexible made with great application potential for wearable electronics
- Easily made into various sizes and shapes, such as yarn, plane-structured batteries
Applications
- Energy storage device
- Flexible electronic devices
- Intelligent clothing
