High energy Ni-rich cathode will play a key role in advanced Li-ion batteries, but it suffers from moisture sensitivity, side reactions and gas generation. Single crystalline Ni-rich cathode has a great potential to address the challenges present in its polycrystalline counterpart by reducing phase boundaries and materials surfaces. However, synthesis of high-performance single crystalline Ni-rich cathode is very challenging, not mentioning a fundamental linkage between over potential, microstructure and electrochemical behaviors in single crystalline Ni-rich cathodes. This talk will discuss the failure mechanism of single crystals caused by planar gliding and microcracking along the (003) plane and proposed potential solutions to mitigate cracking issue and enhance the cycling stability. Gas generation from single crystal Ni-rich NMC will also be discussed and compare to its polycrystal counterparts.

Single crystal Ni-rich cathodes for advanced Li-ion batteries

ACS Spring 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.