Synthesis and Processing by Design of High‐Nickel Cathode Materials

Abstract The high demand of lightweight, high energy density batteries for energy storage promotes new materials discovery and development. Despite the large number of battery materials being discovered, very few of them have been commercially deployed, mostly bottlenecked by synthesis and processing – namely, making certain phases with the desired structure and properties to meet the multifaceted performance requirements. Alternative to the traditional trial and error, we present here an in situ study aided synthesis‐ and processing‐by‐design approach. With specific examples, we illustrate how to use the approach to identify reaction pathways in synthesis and processing of high‐Nickel (Ni) cathode materials for next‐generation lithium‐ion batteries, thereby ensuring precise control of their structure, morphology, and surface properties. To the end, perspectives are provided on the wide applicability of the approach to solving critical issues inherent to high‐Ni cathodes and the new directions and opportunities in the area.