Source:http://linkedlifedata.com/resource/pubmed/id/21701720
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
29
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| pubmed:dateCreated |
2011-7-12
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| pubmed:abstractText |
LiCoO(2) concaved cuboctahedra with a size of about 1.0 ?m were hydrothermally prepared from CoCO(3) and LiOH·H(2)O at 150 °C. Field-emitting scanning electron microscope (FESEM) images show that the cuboctahedra consisted of four hexagonal plates, with angles of 70.5° in neighboring plates. Electron diffraction (ED) patterns of the hexagonal plates show 1? 0? 0 diffraction of LiCoO(2) in rhombohedral phase and 2?2?0 diffraction in spinel phase, which means LiCoO(2) concaved cuboctahedra are comprised of two intergrown phases. The electrochemical performance of these concaved cuboctahedra of LiCoO(2) at a rate of 0.5 C demonstrated first run charge/discharge capacities of 155 and 141 mAh g(-1) and a stable discharge capacity of 114 mAh g(-1) after 100 cycles. After that, FESEM images show the LiCoO(2) concaved cuboctahedra have undergone no significant change. At a temperature of 120 °C and under the same conditions, only a small amount of LiCoO(2) concaved cuboctahedron appeared. As the temperature rose to 180 °C, flower-like LiCoO(2) microstructures with a size of about 1.0 ?m were formed, constructed of irregular plates. The electrochemical performance of the products prepared at 120 °C and 180 °C indicates lower stability than that of LiCoO(2) concaved cuboctahedra.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Aug
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| pubmed:issn |
1477-9234
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| pubmed:author | |
| pubmed:issnType |
Electronic
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| pubmed:day |
7
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| pubmed:volume |
40
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
7645-50
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| pubmed:year |
2011
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| pubmed:articleTitle |
Preparation of LiCoO2 concaved cuboctahedra and their electrochemical behavior in lithium-ion battery.
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| pubmed:affiliation |
Hefei National Laboratory for Physical Science at Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
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| pubmed:publicationType |
Journal Article
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