Engineering Crystal Orientation of Cathode for Advanced Lithium‐Ion Batteries: A Minireview

Abstract

Engineering crystal orientation has attracted widespread attention since it is related to the cyclability and rate performance of cathode materials for lithium‐ion batteries (LIBs). Regulating the crystal directional growth with optimal exposed crystal facets is an effective strategy to improve the performance of cathode materials, but still lacks sufficient attention in research field. Herein, we briefly introduce the characterization techniques and identification methods for crystal facets, then summarize and illuminate the major methods for regulating crystal orientation and their internal mechanism. Furthermore, the optimization strategies for layered‐, spinel‐, and olivine‐structure cathodes are discussed based on the characteristic of crystal structure, and the relationship between exposure of special crystal facets and lithium storage performance is deeply analyzed, which could guide the rational design of cathodes for LIBs.

Engineering Crystal Growth and Surface Modification of Na3V2(PO4)2F3 Cathode for High‐Energy‐Density Sodium‐Ion Batteries

“…[8] To improve the electrochemical performance of NVPF, researchers have adopted several strategies, such as nanosizing, [9] carbon coating, [10] heterogeneous ion doping, [11] and tuning the crystal facet growth. [12] As previously reported in our work, [13] changes in the crystal structure could affect the morphology and electrochemical performance of NVPF. In addition, Yi et al [14] reported a strategy for controlling NVPF crystal structure by adjusting the pH, which can influence the surface energy, thereby changing the morphologies of NVPF from a 0D nanoparticle (alkaline environment) to a 3D cubic structure (acidic environment).…”

“…To improve the electrochemical performance of NVPF, researchers have adopted several strategies, such as nanosizing, [ 9 ] carbon coating, [ 10 ] heterogeneous ion doping, [ 11 ] and tuning the crystal facet growth. [ 12 ] As previously reported in our work, [ 13 ] changes in the crystal structure could affect the morphology and electrochemical performance of NVPF. In addition, Yi et al.…”

A Medium‐Entropy Phosphate Cathode with Multielectron Redox Reaction for Advanced Sodium‐Ion Batteries

“…The structure is an inherent factor that governs the properties of materials. [ 53 ] As mentioned above, the unsatisfactory cycling performance of cathodes with multielectron redox reactions is primarily attributed to irreversible distortion in the crystal structure. For instance, previous studies have reported the origin of the rapid structural decay of LE‐NMVP.…”

Highly textured and crystalline materials for rechargeable Li‐ion batteries

“…In recent years, interfacial design and crystal engineering that control lattice orientation have attracted attention as a key strategy for improving the performance of ASSBs. [19][20][21][22][23][24][25][26] Building the textured, epitaxial, and single crystalline systems is able to refine and disclose the interfacial behaviors of electrochemical mechanisms as well as to improve the durability and energy density of solid-state batteries. 27,28 Furthermore, significant adverse events at interface, one of the major obstacles to ASSBs, can be successfully suppressed by optimizing the orientation order of electrodes and SEs.…”