Fasehullah, Muhammad Jamil, Sidra Ali, Ghulam Chae, Keun Hwa Jabar, Bushra Mansoor, Adil Tang, Chao 2025-11-21T00:39:47Z 2025-11-21T00:39:47Z 2025-11-11 2025-11 1385-8947 https://pubs.kist.re.kr/handle/201004/153565 The severity of cracking and planar gliding along (003) facets due to the irreversible phase transition and anisotropic volume change in single-crystalline Ni-rich layered oxides leads to sluggish redox kinetics and poor cycling performance. In this work, we coated the single-crystal LiNi0.8Co0.1Mn0.1O2 with exfoliated graphene nanoplates by using an amphiphilic surfactant oleic acid as an adhesive. The robust structure of graphene is uniformly coated on the surface, providing chemo-mechanical strength to the particle surface. The coating layer suppresses the irreversible phase transition and anisotropic volume change that effectively inhibits the mechanical stress and planar gliding during the long-term cycling. Additionally, the coating serves as a passivation layer that prevents the parasitic side reactions and mitigates the electrolytic infiltration into the particles, facilitating fast Li+ diffusion kinetics. Therefore, the modified cathode demonstrates a capacity retention of 92.2 % at 1C and 94.5 % at 5C between 2.7 and 4.3 V vs. Li+/Li compared to the pristine (70 % at 1C and 66.5 % at 5C). Hence, this coating strategy is beneficial to provide a shield against mechanical degradation and sluggish kinetics for single-crystal Ni-rich layered oxide cathodes. English Elsevier BV Surface engineering of single-crystal NCM811 with graphene for enhanced mechanical integrity Article 10.1016/j.cej.2025.169049 1 Chemical Engineering Journal, v.524 Chemical Engineering Journal 524 N scie scopus 001589091700001 2-s2.0-105017724986 Engineering, Environmental Engineering, Chemical Engineering Article NI-RICH CATHODE BULK Li-ion batteries Single-crystal Graphene coating Planar gliding Phase transition