Water sensitivity of layered P2/P3-NaxNi0.22Co0.11Mn0.66O2 cathode material

被引：162

作者：

Buchholz, Daniel ^{[1
,2
,3
]}

Chagas, Luciana Gomes ^{[1
,2
,3
]}

Vaalma, Christoph ^{[1
,2
,3
]}

Wu, Liming ^{[1
,2
,3
]}

Passerini, Stefano ^{[1
,2
,3
]}

机构：

[1] Univ Munster, Inst Phys Chem, D-48149 Munster, Germany

[2] Helmholtz Inst Ulm HIU Electrochem 1C, D-89081 Ulm, Germany

[3] KIT, D-76021 Karlsruhe, Germany

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 33期

关键词：

NA-ION BATTERIES; RECHARGEABLE LITHIUM BATTERIES; SODIUM; INTERCALATION; NI; CO; BRONZES; P2-TYPE; MN; T2;

D O I：

10.1039/c4ta02627f

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Sodium-based layered oxides undergo several structural changes upon the (de-)sodiation process and reveal a strong tendency towards water intercalation at lower sodium contents. However, valuable information about their handling during the investigation are still rare. Herein, we report an investigation of the water sensitivity of layered NaxNi0.22Co0.11Mn0.66O2 with mixed P2/P3 structure via X-ray diffraction. At lower sodium contents, i.e. below x approximate to 0.33 or above 3.6 V vs. Na/Na+, a strong tendency for the uptake of water is observed, supported by the appearance of new diffraction peaks confirming a dramatically increased interlayer distance. However, at high sodium content (x > 0.33) the material can be processed in open air without major changes.

引用

页码：13415 / 13421

页数：7

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