Operando Structural Characterization of the Lithium-Substituted Layered Sodium-Ion Cathode Material P2-Na0.85Li0.17Ni0.21Mn0.64O2 by X-ray Absorption Spectroscopy

被引：38

作者：

Karan, Naba K. ^{[1
]}

Slater, Michael D. ^{[2
]}

Dogan, Fulya ^{[2
]}

Kim, Donghan ^{[2
]}

Johnson, Christopher S. ^{[2
]}

Balasubramanian, Mahalingam ^{[1
]}

机构：

[1] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA

[2] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2014年 / 161卷 / 06期

关键词：

ELECTROCHEMICAL PROPERTIES; LOCAL-STRUCTURE; BATTERIES; NA; NMR; LI; INTERCALATION; MANGANESE; BRONZES; P2-TYPE;

D O I：

10.1149/2.088406jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Layered sodium-ion cathode material P2-Na0.85Li0.17Ni0.21Mn0.64O2 was investigated using operando XAS to characterize structural changes occurring in the material during electrochemical sodiation/desodiation. Based on XANES data, the primary mode of charge compensation in this material is due to Ni2-3/4+ redox activity, while the Mn remains in the +4 oxidation state, thereby providing stability to this material during extended cycling. Investigation of the initial state of the compound by high resolution synchrotron XRD and Li-6 MAS NMR revealed a significant amount of structural disorder due to integration of a small amount of monoclinic layered Li phase within the overall hexagonal layered Na-structure, which manifests as Li-induced stacking faults. High quality EXAFS data could be obtained using our cell construction and revealed the local structural evolution around the redox active Ni centers. (C) 2014 The Electrochemical Society. All rights reserved.

引用

页码：A1107 / A1115

页数：9

共 35 条

[1] In situ X-ray absorption study of a layered manganese-chromium oxide-based cathode material [J].

Balasubramanian, M ;

McBreen, J ;

Davidson, IJ ;

Whitfield, PS ;

Kargina, I .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (02) :A176-A184

[2] Long-Range and Local Structure in the Layered Oxide Li1.2Co0.4Mn0.4O2 [J].

Bareno, J. ;

Balasubramanian, M. ;

Kang, S. H. ;

Wen, J. G. ;

Lei, C. H. ;

Pol, S. V. ;

Petrov, I. ;

Abraham, D. P. .

CHEMISTRY OF MATERIALS, 2011, 23 (08) :2039-2050

[3] Local Structure of Layered Oxide Electrode Materials for Lithium-Ion Batteries [J].

Bareno, J. ;

Lei, C. H. ;

Wen, J. G. ;

Kang, S-H ;

Petrov, I. ;

Abraham, D. P. .

ADVANCED MATERIALS, 2010, 22 (10) :1122-1127

[4]

Berthelot R, 2011, NAT MATER, V10, P74, DOI [10.1038/nmat2920, 10.1038/NMAT2920]

[5]

BORGERS PF, 1966, SOLID STATE COMMUN, V4, P153

[6] Structure of Li2MnO3 with different degrees of defects [J].

Boulineau, A. ;

Croguennec, L. ;

Delmas, C. ;

Weill, F. .

SOLID STATE IONICS, 2010, 180 (40) :1652-1659

[7] Synthesis and characterization of high-temperature hexagonal P2-Na0.6MnO2 and its electrochemical behaviour as cathode in sodium cells [J].

Caballero, A ;

Hernán, L ;

Morales, J ;

Sánchez, L ;

Peña, JS ;

Aranda, MAG .

JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (04) :1142-1147

[8] ALKALI METAL NICKEL OXIDES OF THE TYPE MNIO2 [J].

DYER, LD ;

BORIE, BS ;

SMITH, GP .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1954, 76 (06) :1499-1503

[9] NMR studies of cathode materials for lithium-ion rechargeable batteries [J].

Grey, CP ;

Dupré, N .

CHEMICAL REVIEWS, 2004, 104 (10) :4493-4512

[10] Electrochemical and Structural Study of the Layered, "Li-Excess" Lithium-Ion Battery Electrode Material Li[Li1/9Ni1/3Mn5/9]O2 [J].

Jiang, Meng ;

Key, Baris ;

Meng, Ying S. ;

Grey, Clare P. .

CHEMISTRY OF MATERIALS, 2009, 21 (13) :2733-2745

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