Effect of nickel and iron on structural and electrochemical properties of O3 type layer cathode materials for sodium-ion batteries
- Title
- Effect of nickel and iron on structural and electrochemical properties of O3 type layer cathode materials for sodium-ion batteries
- Author
- 선양국
- Keywords
- O3-type; Layered structure; Cathode material; Sodium ion battery; Oxalate
- Issue Date
- 2016-08
- Publisher
- ELSEVIER SCIENCE BV
- Citation
- JOURNAL OF POWER SOURCES, v. 324, Page. 106-112
- Abstract
- We investigate that the effect of Ni and Fe contents on structural and electrochemical properties of O3-type layered Na[Ni0.75-xFexMn0.25]O-2 (x = 0.4, 0.45, 0.5, and 0.55) in which Mn is fixed at 25%. As increasing the Ni contents, the capacities are gradually higher while the capacity retention and thermal properties are inferior. When Fe contents are increased, by contrast, the electrode exhibits stable capacity retention and satisfactory thermal stability although the resulting capacity slightly decreases. Structural investigation of post cycled electrodes indicate that lattice variation is greatly suppressed from x = 0.5 in Na[Ni0.75-xFexMn0.25]O-2. This indicates that an appropriate amount of Fe into the Na[Ni0.75-xFexMn0.25]O-2 stabilizes the crystal structure and this leads to the good cycling performances. Also, the better structural stability obtained by Fe addition is responsible for the less heat generation at elevated temperature for the desodiated Na1-delta[Ni0.75-xFexMn0.25]O-2 (x = 0.4, 0.45, 0.5, and 0.55) caused by less evaporation of oxygen from the crystal structure.(C) 2016 Elsevier B.V. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0378775316306103?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/75120
- ISSN
- 0378-7753; 1873-2755
- DOI
- 10.1016/j.jpowsour.2016.05.064
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML