Anionic-surfactant-assisted synthesis of Ni0.8Co0.1Mn0.1(OH)2 as precursors of high-performance cathode materials for lithium-ion batteries

• Published in: Journal of power sources Vol. 615; p. 235092
• Main Authors: Wu, Zhaowei, Li, Xiang, Hai, Chunxi, Ren, Xiufeng, Zeng, Jinbo, Shen, Yue, Zhou, Yuan
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 30.09.2024
• Subjects: Cathode materials; Li-ion battery; Surface structure; {104} facets; β-styrylphosphonic acid; {104} facets; Cathode materials; β-styrylphosphonic acid; Li-ion battery; Surface structure
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/j.jpowsour.2024.235092

A facilitated anionic-surfactant-assisted method is developed to synthesize hierarchical microstructure Ni0.8Co0.1Mn0.1(OH)2 precursors. The anionic surfactant β-styrylphosphonic acid could directionally regulate the growth and the arrangement of the precursor nanosheets, where the primary nanosheets could maintain layered growth and ordered arrangement. The cathode material of the LiNi0.8Co0.1Mn0.1O2 synthesized from the above precursors exhibits best electrochemical performances and its capacity retention rates could reach 93 % (164.5 mAh g−1) after 100 cycles and 84.3 % (149.0 mAh g−1) after 300 cycles. Meanwhile, the detailed atomic arrangements on the crystal facets of cathodes are investigated both via first-principles calculations and transmission electron microscopy (TEM) analysis, and this research reveals that the crystal facet structures of cathode materials determine the electrochemical properties significantly. Schematic illustration for adsorption procedure of SPA on the precursor primary grains in the presence of the ammonia. [Display omitted] •A simple surfactant-assisted method is developed to synthesize hierarchical precursors.•The surfactant directionally regulates the growth and arrangement of the nanosheets.•The cathode materials synthesized could exhibit best electrochemical performances.