Journal ArticleDOI
The Effects of AlF3 Coating on the Performance of Li [ Li0.2Mn0.54Ni0.13Co0.13 ] O2 Positive Electrode Material for Lithium-Ion Battery
TLDR
In this paper, National Basic Research Program of China (973 Program) [2007CB209702] and National Natural Science Foundation (NNSFC) [20433060, 20473068, 29925310]Abstract:
National Basic Research Program of China (973 Program) [2007CB209702]; National Natural Science Foundation of China (NNSFC) [20433060, 20473068, 29925310]read more
Citations
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Journal ArticleDOI
Recent developments in cathode materials for lithium ion batteries
TL;DR: In this paper, the performance characteristics of transition metal oxides based on the α-NaFeO 2, spinel and olivine structures have been compared and approaches for improving their performances have been proposed.
Journal ArticleDOI
Detailed Studies of a High-Capacity Electrode Material for Rechargeable Batteries, Li2MnO3−LiCo1/3Ni1/3Mn1/3O2
TL;DR: Electrochemical oxidation/reduction data show that simultaneous oxygen and lithium removal at the voltage plateau upon initial charge causes the structural rearrangement, including a cation migration process from metal to lithium layers, which is consistent with the mechanism proposed in the literature related to the Li-excess manganese layered oxides.
Journal ArticleDOI
Nickel-Rich and Lithium-Rich Layered Oxide Cathodes: Progress and Perspectives
TL;DR: Li-rich layered oxides have attracted much research interest as cathodes for Li-ion batteries due to their low cost and higher discharge capacities compared to those of LiCoO2 and LiMn2O4 as mentioned in this paper.
Journal ArticleDOI
Formation Of The Spinel Phase In The Layered Composite Cathode Used In Li-Ion Batteries
Meng Gu,Ilias Belharouak,Jianming Zheng,Huiming Wu,Jie Xiao,Arda Genc,Khalil Amine,Suntharampillai Thevuthasan,Donald R. Baer,Ji Guang Zhang,Nigel D. Browning,Jun Liu,Chongmin Wang +12 more
TL;DR: The observation of structure transition characteristics discussed in this paper provides direct explanation for the observed gradual capacity loss and poor rate performance of the layered composite and provides clues about how to improve the materials structure in order to improve electrochemical performance.
References
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Journal ArticleDOI
Li2MnO3-stabilized LiMO2 (M = Mn, Ni, Co) electrodes for lithium-ion batteries
Michael M. Thackeray,Sun-Ho Kang,Christopher S. Johnson,John T. Vaughey,Roy Benedek,Stephen A. Hackney +5 more
TL;DR: In this paper, a strategy used to design high capacity (>200 mAh g−1), Li2MnO3-stabilized LiMO2 (M = Mn, Ni, Co) electrodes for lithium-ion batteries is discussed.
Journal ArticleDOI
Demonstrating Oxygen Loss and Associated Structural Reorganization in the Lithium Battery Cathode Li[Ni0.2Li0.2Mn0.6]O2
A. Robert Armstrong,Michael Holzapfel,Petr Novák,Christopher S. Johnson,Sun-Ho Kang,and Michael M. Thackeray,Peter G. Bruce +6 more
TL;DR: It is demonstrated directly, by in situ differential electrochemical mass spectrometry (DEMS), that O2 is evolved from such Mn4+ -containing compounds, Li-Mn-Ni-O compounds, which can, after O loss, store 200 mAhg(-1) of charge compared with 140mAhg (-1) for LiCoO(2).
Journal ArticleDOI
Advances in manganese-oxide ‘composite’ electrodes for lithium-ion batteries
TL;DR: In this paper, a two-component notation is used to represent the Li2MnO3, LiMO2 and LiM2O4 components, which provide an initial capacity >250 mAh g−1 when discharged between 5 and 2.0 V vs. Li0 and a rechargeable capacity up to 250 mAhg−1 over the same potential window.
Journal ArticleDOI
Understanding the Anomalous Capacity of Li / Li [ Ni x Li ( 1 / 3 − 2x / 3 ) Mn ( 2 / 3 − x / 3 ) ] O 2 Cells Using In Situ X-Ray Diffraction and Electrochemical Studies
Zhonghua Lu,J. R. Dahn +1 more
TL;DR: In this article, it was shown that Li/Li[Ni x Li (1/3-2x/3) Mn (2 /3-x /3) ]O 2 cells give smooth reversible voltage profiles reaching about 4.45 V when 2x Li atoms per formula unit are removed, as expected.