Effects of Al substitution for Ni and Mn on the electrochemical properties of LiNi0.5Mn1.5O4

Zhong, Guobin; Wang, Y.Y.; Zhang, Z.C.; Chen, C.H.

doi:10.1016/j.electacta.2011.03.093

Cited by 141 publications

(78 citation statements)

References 35 publications

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“…To obtain more recyclable energy, various active materials for potential cathodes have been proposed in the past two decades. Considering the intrinsic excellent rate performance arising from the three-dimensional path of lithium ions in the spinel lattice, as a derivative of spinel LiMn 2 O 4 , the spinel LiMn 1.5 Ni 0.5 O 4 (LMNO) has recently attracted great attentions [2e11] for its nearly flat operating voltage [12,13]. It shows a high capacity of 130 mAh g À1 (theoretical capacity: 147 mAh g À1 ) and much higher operating voltage at around 4.7 V, which is attributed to the Ni 2þ /Ni 3þ and Ni 3þ /Ni 4þ redox couples [3,5].…”

Section: Introductionmentioning

confidence: 99%

Improved cycling performance of 5 V spinel LiMn1.5Ni0.5O4 by amorphous FePO4 coating

Liu

Bai

Zhao

et al. 2012

Journal of Power Sources

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Section: Introductionmentioning

confidence: 99%

Improved cycling performance of 5 V spinel LiMn1.5Ni0.5O4 by amorphous FePO4 coating

Liu

Bai

Zhao

et al. 2012

Journal of Power Sources

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“…Hence, LiNi0.5Mn1.5O4 still has non-negligible capacity fading during cycling due to the structural and chemical instabilities resulting from the presence of Mn 3+ ions. To solve this problem, researchers have put forth many solutions such as surface-coating [5][6][7], nanostructuring [2], and cationic-doping with ions such as Mo 6+ [8], Cr 3+ [9], B 3+ [10], Ti 4+ [11], Al 3+ [12], and W 4+ [13]. All these doped metal cations can induce differences in the cycle properties and electrical conductivity of LiNi0.5Mn1.5O4 to different extents.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and electrochemical performance of Sn-doped LiNi0.5Mn1.5O4 cathode material for high-voltage lithium-ion batteries

Hao

et al. 2017

Sci. China Mater.

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LiNi0.5Mn1.5−xSnxO4 (0 ≤ x ≤ 0.1) cathode materials with uniform and fine particle sizes were successfully synthesized by a two-step calcination of solid-state reaction method. As the cathode materials for lithium ion batteries, the LiNi0.5Mn1.48Sn0.02O4 shows the highest specific capacity and cycle stability. In the potential range of 3.5-4.9 V at room temperature, LiNi0.5Mn1.48Sn0.02O4 composite material shows a discharge capacity of more than 117 mA h g −1 at 0.1 C, while the corresponding discharge capacity of undoped LiNi0.5Mn1.5O4 is only 101 mA h g −1 . Moreover, in cycle performance, all the LiNi0.5Mn1.5−xSnxO4 (0 ≤ x ≤ 0.1) samples show better capacity retention than the undoped LiNi0.5Mn1.5O4 at 1 C rate after 100 cycles. Especially, for the LiNi0.5Mn1.5O4, the discharge capacity after 100 cycles is 90 mA h g −1 , while the corresponding discharge capacities of the undoped LiNi0.5Mn1.5O4 is only 56.1 mA h g −1 . The significantly enhanced DLi + and the enlarged electronic conductivity make the Sn-doped spinel LiNi0.5Mn1.5O4 material present even more excellent electrochemical performances. These results reveal that Sn-doping is an effective way to improve electrochemical performances of LiNi0.5Mn1.5O4.

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“…The LiMn 1.5 Ni 0.5 O 4 sintered below 650°C shows P4 3 32 structure. In the ordered P4 3 32 structure, Ni 2+ and Mn 4+ ions occupy octahedral 4a and 12b sites of the spinel lattice, respectively, while these cations distribute randomly on the octahedral 16d sites in the disordered Fd3m structure [23]. Many researchers reported that the rate capability offered by disordered Fd3m, LiNi 0.5 Mn 1.5 O 4 spinels was much better than that of ordered P4 3 32 spinels due to the higher electronic and ionic conductivities [24].…”

Section: Resultsmentioning

confidence: 97%

Preparation of LiNi0.5Mn1.5O4 cathode materials by electrospinning

Zhong

Piao

Luo

et al. 2016

Ionics

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LiNi 0.5 Mn 1.5 O 4 cathode material was prepared by electrospinning using lithium hydroxide, manganese acetate, nickel acetate, acetic acid, ethanol, and poly(vinyl pyrrolidone) as raw materials. The effect of calcination temperature on the structure, morphology, and electrochemical properties was investigated. XRD results indicate that the LiNi 0.5 Mn 1.5 O 4 composite is well crystallized as a spinel structure at calcination temperature of 650°C for 3 h. SEM results reveal that this composite has a nanofiber shape with average size of about 300-500 nm. Electrochemical performance tests reveal that this composite shows the initial discharge capacity of 127.8 and 105 mAhg −1 at 0.1 and 3 C rates, respectively, and exhibits good cycling performance.

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Effects of Al substitution for Ni and Mn on the electrochemical properties of LiNi0.5Mn1.5O4

Cited by 141 publications

References 35 publications

Improved cycling performance of 5 V spinel LiMn1.5Ni0.5O4 by amorphous FePO4 coating

Improved cycling performance of 5 V spinel LiMn1.5Ni0.5O4 by amorphous FePO4 coating

Synthesis and electrochemical performance of Sn-doped LiNi0.5Mn1.5O4 cathode material for high-voltage lithium-ion batteries

Preparation of LiNi0.5Mn1.5O4 cathode materials by electrospinning

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