2021
DOI: 10.1039/d1ta04312a
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Effects of aluminum substitution in nickel-rich layered LiNixAl1−xO2 (x = 0.92, 0.95) positive electrode materials for Li-ion batteries on high-rate cycle performance

Abstract: Nano-scale Al-rich layers on the surface of LiNi0.92Al0.08O2 and substituted-Al in the crystal suppress both the surface degradation and bulk degradation, resulting in the excellent cycling performance Ni-rich electrode material.

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Cited by 17 publications
(8 citation statements)
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“…Here, 0.2 C discharge was conducted once every 100 cycles to investigate the detailed degradation behavior of the material, as we did in our previous study of LiNi 1– x Al x O 2. Some numerical capacity data at 0.2 C and 2 C are summarized in Table S3. PC-LNO exhibited a higher discharge capacity than SC-LNO at both 0.2 C and 2 C in the initial stage of cycling, but SC-LNO prevailed at the 2 C rate after 100 cycles and at the 0.2 C rate after 300 cycles.…”
Section: Resultsmentioning
confidence: 99%
“…Here, 0.2 C discharge was conducted once every 100 cycles to investigate the detailed degradation behavior of the material, as we did in our previous study of LiNi 1– x Al x O 2. Some numerical capacity data at 0.2 C and 2 C are summarized in Table S3. PC-LNO exhibited a higher discharge capacity than SC-LNO at both 0.2 C and 2 C in the initial stage of cycling, but SC-LNO prevailed at the 2 C rate after 100 cycles and at the 0.2 C rate after 300 cycles.…”
Section: Resultsmentioning
confidence: 99%
“…Electrodes, make up one of the four major components of a battery and are a source of energy. Much research has been conducted on this component to determine the theoretical capacity of the active materials among the electrode materials (Thackeray et al, 2007;Kraytsberg and Ein-eli, 2012;Andre et al, 2015;Kim et al, 2019b;Li et al, 2020;Wang et al, 2020;Aryal et al, 2021;Fang et al, 2021;Kaneda et al, 2021;Tsai et al, 2021;Lv et al, 2022). Current collectors and separators are also major components, however, they can be classified as passive components from an energy storage perspective because they do not contain any lithium source that contributes to the battery's capacity.…”
Section: Challenges Of Thick Electrodesmentioning
confidence: 99%
“…[7] Ti is also an effective dopant element for LNO, which can improve the structural stability and the reversibility of H2-H3 phase transition, inhibiting the migration of Ni 2 + into Li + sites, so that its doping compounds display excellent cycle stabilities. [8][9][10] A LiNi 0.995 Ti 0.005 O 2 cathode material can deliver 169.8 mAh g À 1 at 0.1 C with 83 % capacity retention after 20 cycles. [8] A LiNi 0.990 Al 0.005 Ti 0.005 O 2 cathode material has the first discharge capacity of 196.3 mAh g À 1 at 0.1 C and 126.7 mAh g À 1 after 50 cycles, [11] but the results still are unsatisfactory.…”
Section: Introductionmentioning
confidence: 99%
“…A LiNi 0.975 Al 0.025 O 2 cathode material can deliver an initial discharge specific capacity of 225 mAh g −1 at 0.2 C and about 160 mAh g −1 residual capacity after 100 cycles [7] . Ti is also an effective dopant element for LNO, which can improve the structural stability and the reversibility of H2‐H3 phase transition, inhibiting the migration of Ni 2+ into Li + sites, so that its doping compounds display excellent cycle stabilities [8–10] . A LiNi 0.995 Ti 0.005 O 2 cathode material can deliver 169.8 mAh g −1 at 0.1 C with 83 % capacity retention after 20 cycles [8] .…”
Section: Introductionmentioning
confidence: 99%