期刊
SCIENCE CHINA-MATERIALS
卷 61, 期 8, 页码 1057-1066出版社
SCIENCE PRESS
DOI: 10.1007/s40843-017-9225-5
关键词
sodium ion batteries; anode materials; metal-organic framework; cobalt titanate; mesoporous materials
资金
- National Natural Science Foundation of China [51402155, 21373107]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) [YX03002]
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Foundation of NJUPT [NY217077]
- PolyU Start-up Fund for New Recruits [1-ZE8R]
Durability, rate capability, capacity and tap density are paramount performance metrics for promising anode materials, especially for sodium ion batteries. Herein, a carbon free mesoporous CoTiO3 micro-prism with a high tap density (1.8 g cm(-3)) is newly developed by using a novel Co-Ti-bimetal organic framework (BMOF) as precursor. It is also interesting to find that the Co-Ti-BMOF derived carbon-free mesoporous CoTiO3 micro-prisms deliver a superior stable and more powerful Na+ storage than other similar reported titania, titanate and their carbon composites. Its achieved capacity retention ratio for 2,000 cycles is up to 90.1% at 5 A g(-1).
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