Abstract: Energy shortages and environmental pollution are two serious challenges that humanity will face in the long term. There is a growing awareness that nanoscience and nanotechnology can have a profound impact on energy storage and utilization by exploiting the significant differences in energy states and transport in nanostructures and macrostructures. Nanotechnology-based solutions are being developed for a wide range of energy solutions, such as solar cells, fuel cells, and lithium-ion batteries. My research is applying nanotechnology such as atomic layer deposition (ALD) and molecular layer deposition (MLD) to address challenges in lithium ion batteries and low temperature fuel cells.
Over the past few years, advanced rechargeable batteries, including lithium-ion, lithium-sulfur, alkali metal-oxygen, and all-solid-state batteries, have attracted intensive research attention as a promising solution to global energy and environment problems because of their high energy density and long working life. Although remarkable progress has been made on rechargeable batteries, there are still some key challenges for their practical application in electronic vehicles and large-scale energy storage. One challenge is control of the interfaces between electrolytes and anode/cathode electrodes in the above systems. ALD and MLD techniques can address these challenges.
This talk will consist of three parts:
- Interface design and materials for lithium-ion and lithium-sulfur batteries
- Interface design and materials for solid-state batteries
- Sodium-air batteries from material design to chemical reactions: Our group has been working on this system from cathode design, identification of discharge product, and improvement of cycling performance to sodium anode protection.