@article{LI2026, 
author = {Qing’an LI and Wei ZHANG and Biao JIN and Yingshun WANG and Cheng HE},
title = {Constructing high-voltage stable structures for cobalt-free high nickel cathode via Se doping},
year = {2026},
journal = {Journal of Aeronautical Materials},
volume = {46},
number = {2},
pages = {81-88},
keywords = {lithium-ion batteries, cobalt-free high-nickel cathode, doping, high-voltage},
url = {https://www.sciopen.com/article/10.11868/j.issn.1005-5053.2024.000125},
doi = {10.11868/j.issn.1005-5053.2024.000125},
abstract = {A series of heterogeneous Se-doped cobalt-free high nickel layered cathodes LiNi0.847Mn0.092Al0.061O2 are synthesized using the high-temperature solid-phase method to address the issues of rapid capacity decay, poor stability, and structural phase transition in cobalt-free high nickel materials. The results show that Se doping can effectively inhibit the formation and diffusion of structural phase transition and micro-cracks. Among them, the doping amount of 1% LiNi0.837Mn0.092Al0.061Se0.01O2 low degree of positive electrode material of lithium nickel are mixed, with better crystallinity and lamellar structure. At a high-voltage of 4.5 V, the specific discharge capacity of LiNi0.837Mn0.092Al0.061Se0.01O2 is as high as 207.61 mAh·g−1, and the capacity retention rate increased from 69.37% without doping to 85.45% after 100 cycles at 1C.}
}