Single crystal Ni-rich doped LiNi0.59Co0.3Ti0.1Al0.01O2 (NCTA) cathode materials: Effect of annealing temperature on the structural, morphology, and electrochemical performance

Abstract

The rapid advancements in lithium-ion batteries (LIBs) demand innovative approaches to enhance cathode performance for high-capacity energy storage. This study focuses on Ni-rich doped LiNi0.59Co0.3Ti0.1Al0.01O2 (NCTA) single-crystal cathode materials, synthesized via co-precipitation and subjected to varying annealing temperatures (900°C, 920°C, and 950°C). The purpose of this research is to examine how annealing temperature impacts the structural, morphological, and electrochemical properties of these NCTA cathode materials. Advanced characterization techniques, including XRD, FESEM, and electrochemical testing, were utilized to evaluate crystallinity, particle distribution, and cycling performance. The results revealed that 920°C annealing temperature is an optimal crystallinity, reduced cation mixing, and enhanced electrochemical stability, with capacity retention of 81.90% after 100 cycles. This study concludes that precise temperature control during synthesis is critical to improving LIB cathode performance, contributing to more efficient energy storage solutions.