About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances and Discoveries in Non-equilibrium Driven Nanomaterials and Thin Films
|
| Presentation Title |
Recent Advances for Highly Stable Practical Potassium Ion Batteries |
| Author(s) |
Qian Liu, Qingfeng Zhang, Chengxin Wang, Rao Apparao, Bingan Lu |
| On-Site Speaker (Planned) |
Rao Apparao |
| Abstract Scope |
Potassium ion batteries (PIBs) suffer from limited cycle life and severe decomposition in organic electrolytes. A simple and viable method was developed by which an ultra-thin, uniform, dense and stable artificial inorganic solid-electrolyte interphase (SEI) film can be formed on commercial graphite anodes in traditional carbonate electrolytes. The SEI film endows PIBs with long-cycle stability and high initial Coulombic efficiency (ICE). Next, leveraging sulfur’s pivotal role as a growth promoter, we developed a low-cost large-scale sulfur-assisted synthesis method for graphene. Specifically, a sulfur-assisted method that converts benzene rings of tetraphenyltin into high purity crystalline graphene will be discussed. Our method yields three dimensional few layered graphene microspheres (FLGMs) which exhibit excellent electron mobility and low inter-sheet junction contact resistance that proved ideal for energy storage applications.2 Together, with the SEI-engineered commercial graphite and FLMGs which do not require substrates for their growth, pave the way for PIB-based energy storage devices. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Nanotechnology, Sustainability |