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- W4366281489 endingPage "142425" @default.
- W4366281489 startingPage "142425" @default.
- W4366281489 abstract "Since lithium-ion batteries are becoming increasingly popular, we aimed to increase the power density of lithium-ion batteries by improving the rate capability of lithium insertion electrodes by controlling the reaction mechanism of lithium insertion materials. LiNi0.5Mn1.3Ti0.2O4 (Ti-LNMO), in which a part of Mn4+ in LiNi0.5Mn1.5O4 (LNMO) was replaced by Ti4+, was synthesized and proceeded in a single-phase reaction over the entire region. This resulted in two types of LNMOs with the same spinel structures and solid-state redox reactions of Ni2+/Ni4+, each with different reaction mechanisms. According to rate-capability tests of these two types of LNMOs, the Ti-LNMO exhibited superior rate capability than the LNMO without Ti-substitution, which demonstrated that high-power capabilities could be achieved by controlling the reaction mechanism. Furthermore, the solid-state Li-ion diffusion coefficient in the LNMOs was determined from the rate-capability using the diluted electrode method, and that of Ti-LNMO was more than three times greater than that of the LNMO. These results reveal that the lithium insertion mechanism is important for the kinetics of lithium insertion reaction." @default.
- W4366281489 created "2023-04-20" @default.
- W4366281489 creator A5012720658 @default.
- W4366281489 creator A5053322180 @default.
- W4366281489 date "2023-07-01" @default.
- W4366281489 modified "2023-10-16" @default.
- W4366281489 title "Improving the rate capability of LiNi0.5Mn1.3Ti0.2O4 by modifying the lithium insertion mechanism" @default.
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- W4366281489 doi "https://doi.org/10.1016/j.electacta.2023.142425" @default.
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