Reversible planar gliding and microcracking in a single-crystalline Ni-rich cathode

• Published in: Science (American Association for the Advancement of Science) Vol. 370; no. 6522; pp. 1313 - 1317
• Main Authors: Bi, Yujing, Tao, Jinhui, Wu, Yuqin, Li, Linze, Xu, Yaobin, Hu, Enyuan, Wu, Bingbin, Hu, Jiangtao, Wang, Chongmin, Zhang, Ji-Guang, Qi, Yue, Xiao, Jie
• Format: Journal Article
• Language: English
• Published: United States The American Association for the Advancement of Science 11.12.2020; AAAS
• Subjects: batteries; Cathodes; Cobalt; Concentration gradient; Crack initiation; Cracking (fracturing); Crystal defects; Crystal structure; Crystallinity; Electrochemistry; Electrode materials; ENERGY STORAGE; Fracture mechanics; Gliding; high nickel; High voltage; Lithium; Lithium batteries; Manganese; Microcracks; Microstructure; Nickel; Polycrystals; Scientific Concepts; Side reactions; single crystal; Single crystals; Synthesis

Polycrystalline cathode materials that contain a combination of nickel, manganese, and cobalt have been used for advanced lithium batteries. These materials fracture at high voltage, which increases surface area and leads to more side reactions and shorter cycle life. Using single-crystalline sample...