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Insight into the origin of lithium/nickel ions exchange in layered Li (NixMnyCoz)O-2 cathode materials
Xiao, YG; Liu, TC; Liu, JJ; He, LH; Chen, J; Zhang, JR; Luo, P; Lu, HL; Wang, R; Zhu, WM; Hu, ZX; Teng, GF; Xin, C; Zheng, JX; Liang, TJ; Wang, FW; Chen, YB; Huang, QZ; Pan, F; Chen, HS; Chen J(陈洁); Zhang JR(张俊荣); Luo P(罗平); Lu HL(卢怀乐); Liang TJ(梁天骄); Chen YB(陈元柏); Chen HS(陈和生)
2018
Source PublicationNANO ENERGY
ISSN2211-2855
EISSN2211-3282
Volume49Pages:77-85
SubtypeArticle
AbstractIn layered LiNixMnyCozO2 cathode material for lithium-ion batteries, the spins of transition metal (TM) ions construct a two-dimensional triangular networks, which can be considered as a simple case of geometrical frustration. By performing neutron powder diffraction experiments and magnetization measurements, we find that long-range magnetic order cannot be established in LiNixMnyCozO2 even at low temperature of 3 K. Remarkably, the frustration parameters of these compounds are estimated to be larger than 30, indicating the existence of strongly frustrated magnetic interactions between spins of TM ions. As frustration will inevitably give rise to lattice instability, the formation of Li/Ni exchange in LiNixMnyCozO2 will help to partially relieve the degeneracy of the frustrated magnetic lattice by forming a stable antiferromagnetic state in hexagonal sublattice with nonmagnetic ions located in centers of the hexagons. Moreover, Li/Ni exchange will introduce 180 degrees superexchange interaction, which further relieves the magnetic frustration through bringing in new exchange paths. Thus, the variation of Li/Ni exchange ratio vs. TM mole fraction in LiNixMnyCozO2 with different compositions can be well understood and predicted in terms of magnetic frustration and superexchange interactions. This provides a unique viewpoint to study the Li/Ni ions exchange in layered Li(NixMnyCoz)O-2 cathode materials.
KeywordCathode materials Li/Ni exchange Neutron diffraction Magnetic frustration Triangular lattice
DOI10.1016/j.nanoen.2018.04.020
WOS KeywordELECTROCHEMICAL PERFORMANCE ; THERMAL-STABILITY ; BATTERIES ; CHALLENGES ; LI(NIXMNYCOZ)O-2 ; SUBSTITUTION ; DIFFRACTION ; BEHAVIOR ; NI
Indexed BySCI ; EI
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000434829500010
EI Accession Number20181705046492
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Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/286034
Collection东莞研究部
实验物理中心
中国科学院高能物理研究所_中国散裂中子源
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Xiao, YG,Liu, TC,Liu, JJ,et al. Insight into the origin of lithium/nickel ions exchange in layered Li (NixMnyCoz)O-2 cathode materials[J]. NANO ENERGY,2018,49:77-85.
APA Xiao, YG.,Liu, TC.,Liu, JJ.,He, LH.,Chen, J.,...&陈和生.(2018).Insight into the origin of lithium/nickel ions exchange in layered Li (NixMnyCoz)O-2 cathode materials.NANO ENERGY,49,77-85.
MLA Xiao, YG,et al."Insight into the origin of lithium/nickel ions exchange in layered Li (NixMnyCoz)O-2 cathode materials".NANO ENERGY 49(2018):77-85.
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