| Autor: |
Hui-Yong Liu, Yan-Guang Sun, Zhi-Mei Luo |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Chinese Chemical Letters. 26:1403-1408 |
| ISSN: |
1001-8417 |
| DOI: |
10.1016/j.cclet.2015.06.007 |
| Popis: |
The nano SnO 2 -modified LiNi 1/3 Co 1/3 Mn 1/3 O 2 was successfully prepared by a carrier transfer method. The pristine and modified samples were characterized with various techniques such as XRD, SEM, XPS and EDS. The results showed that the SnO 2 particles did not enter the crystal structure of LiNi 1/3 Co 1/3 Mn 1/3 O 2 , many nano SnO 2 particles were uniformly covered on the surface of LiNi 1/3 Co 1/3 Mn 1/3 O 2 and the modified thin layer could inhibit the dissolution of transition metal oxides. The electrochemical tests indicated that the existence of nano SnO 2 could improve the discharge capacity and rate capability owing to the decreased interfacial polarization. The cycling stability was remarkably improved at room temperature and 55 °C. The XRD patterns of the fresh NCM electrode and after 50 cycles proved that the structural change of NCM was not so effective on the capacity fade. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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