期刊
JOURNAL OF ENERGY CHEMISTRY
卷 26, 期 4, 页码 667-672出版社
ELSEVIER
DOI: 10.1016/j.jechem.2017.02.008
关键词
Hierarchical porous structure; TiO2 nanopills; Metal-organic framework; Na-ion batteries
资金
- JSPS KAKENHI [15K00597]
- Takahashi Industrial and Economic Research Foundation Japan [06-003-154]
- Grants-in-Aid for Scientific Research [15K00597] Funding Source: KAKEN
Hierarchical porous TiO2 nanopills were synthesized using a titanium metal-organic framework MIL-125(Ti) as precursor. The as-synthesized TiO2 nanopills owned a large specific surface area of 102 m(2)/g and unique porous structure. Furthermore, the obtained TiO2 nanopills were applied as anode materials for Na-ion batteries for the first time. The as-synthesized TiO2 nanopills achieved a high discharge capacity of 196.4 mAh/g at a current density of 0.1 A/g. A discharge capacity of 115.9 mAh/g was obtained at a high current density of 0.5 A/g and the capacity retention was remained as high as 90% even after 3000 cycles. The excellent electrochemical performance can be attributed to its unique hierarchical porous feature. (c) 2017 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
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