Electronic structure of LiNiO2, LiFeO2 and LiCrO2: X-ray photoelectron and X-ray emission study

Galakhov, V. R.; Kurmaev, E.Z.; Uhlenbrock, St.; Neumann, M.; Келлерман, Д. Г.; Gorshkov, V. S.

doi:10.1016/0038-1098(95)00279-0

Cited by 44 publications

(25 citation statements)

References 15 publications

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“…The fitting and deconvolution of Li (1s) spectrum gives the major peak binding energy at 54.5 eV, which is similar to lithium in an octahedral environment of oxygen atoms, such as in LiCoO 2 [41]. Figure 7c shows the O 1s spectrum, which has a main peak around 529 eV and another peak at 533 eV that can be deconvoluted to three individual contributions [34,42]. The peak at 529 eV can be assigned to O 2-ions, and the shoulder peak could represent a degree of oxidation more than O 2-due to transition metal-oxygen covalent bonds.…”

Section: Xps Studiesmentioning

confidence: 99%

Optimization and Characterization of Lithium Ion Cathode Materials in the System (1 – x – y)LiNi0.8Co0.2O2 • xLi2MnO3 • yLiCoO2

2010

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Abstract:There is ongoing effort to identify novel materials that have performance better than LiCoO 2 . The objective of this work is to explore materials in the system (1 -x -y) LiNi 0.8 Co 0.2 O 2 • xLi 2 MnO 3 • yLiCoO 2 . A ternary composition diagram was used to identify sample points, and compositions for testing were initially chosen. Detailed characterization of the synthesized materials was done, including Rietveld Refinement of XRD data, XPS analysis for valence state of transition-metals, SEM for microstructure details, and TGA for thermal stability of the materials. Electrochemical performance showed that discharge capacities on the order of 230 mAh/g were obtained. Preliminary results showed that these materials exhibit good cycling capabilities thereby positioning these materials as promising for Li-ion battery applications.

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Section: Xps Studiesmentioning

confidence: 99%

Optimization and Characterization of Lithium Ion Cathode Materials in the System (1 – x – y)LiNi0.8Co0.2O2 • xLi2MnO3 • yLiCoO2

2010

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“…LiCrO 2 was prepared by heating a mixture of Li 2 CO 3 and Cr 2 O 3 at 1123 K in air for 1 day. The room temperature rhombohedral lattice parameters are a ¼ 2:891ð1Þ ( A and c ¼ 14:363ð2Þ ( A in agreement with reported values [1]. The DC magnetic susceptibility wðTÞ ¼ M=H was measured by a SQUID magnetometer (Quantum Design) mated with a high-temperature oven.…”

mentioning

confidence: 81%

Magnetic properties of the frustrated antiferromagnet LiCrO2

Moreno

Israel

Pagliuso

et al. 2004

Journal of Magnetism and Magnetic Materials

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“…[16f, 34] The commonly used dopant elements are Al, [32e, 33, 35] Mg, [36] Ti, [16a, 32j, 37] Cr, [38] Ga, [32i, 36a, 39] and Fe.…”

Section: The Role Of Doping Effectsmentioning

confidence: 99%

Nickel‐Rich Layered Lithium Transition‐Metal Oxide for High‐Energy Lithium‐Ion Batteries

et al. 2015

Angew Chem Int Ed

1,611

1,186

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High energy-density lithium-ion batteries are in demand for portable electronic devices and electrical vehicles. Since the energy density of the batteries relies heavily on the cathode material used, major research efforts have been made to develop alternative cathode materials with a higher degree of lithium utilization and specific energy density. In particular, layered, Ni-rich, lithium transition-metal oxides can deliver higher capacity at lower cost than the conventional LiCoO2 . However, for these Ni-rich compounds there are still several problems associated with their cycle life, thermal stability, and safety. Herein the performance enhancement of Ni-rich cathode materials through structure tuning or interface engineering is summarized. The underlying mechanisms and remaining challenges will also be discussed.

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Electronic structure of LiNiO2, LiFeO2 and LiCrO2: X-ray photoelectron and X-ray emission study

Cited by 44 publications

References 15 publications

Optimization and Characterization of Lithium Ion Cathode Materials in the System (1 – x – y)LiNi0.8Co0.2O2 • xLi2MnO3 • yLiCoO2

Optimization and Characterization of Lithium Ion Cathode Materials in the System (1 – x – y)LiNi0.8Co0.2O2 • xLi2MnO3 • yLiCoO2

Magnetic properties of the frustrated antiferromagnet LiCrO2

Nickel‐Rich Layered Lithium Transition‐Metal Oxide for High‐Energy Lithium‐Ion Batteries

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