期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 161, 期 6, 页码 A1158-A1163出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.118406jes
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资金
- 3M Canada
- NSERC
The NaxNix/2Ti1-x/2O2 (0.5 <= x <= 1.0) series of layered oxides were found to be remarkably stable to 0 V vs. Na and have a reversible low intercalation voltage plateau at 0.7 V. In situ X-ray diffraction measurements confirmed the low voltage intercalation mechanism. The low voltage plateau increases in capacity as x is decreased with the x=0.6 composition having a reversible capacity of 100 mAh/g or 394 Ah/L between 0.005 and 2 V. Higher capacities may be possible in materials which can tolerate more vacancies in the sodium layer. Such layered transition metal titanates may represent a new class of negative electrode materials for applications in Na-ion batteries. (C) 2014 The Electrochemical Society. All rights reserved.
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