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Exploration of Ca0.5Ti2(PO4)3@carbon Nanocomposite as the High-Rate Negative Electrode for Na-Ion Batteries
- Source :
- ACS Applied Materials & Interfaces; December 2016, Vol. 8 Issue: 51 p35336-35341, 6p
- Publication Year :
- 2016
-
Abstract
- Exploring suitable electrode materials with high specific capacity and high-rate capability is a challenging goal for the development of Na-ion batteries. Here, we report a NASICON-structured compound, Ca0.5Ti2(PO4)3, with respect to its synthesis and electrochemical properties. The electrode is found to enable fast Na+ion diffusion owing to the rich crystallographic vacancies, affording a reversible capacity of 264 mA h g–1between 3.0 and 0.01 V. In particular, the hybrid Ca0.5Ti2(PO4)3@carbon exhibits remarkable rate performance with a discharge capacity of nearly 45 mA h g–1at a current density of 20 A g–1, which is attributed to the pseudocapacitive effect.
Details
- Language :
- English
- ISSN :
- 19448244
- Volume :
- 8
- Issue :
- 51
- Database :
- Supplemental Index
- Journal :
- ACS Applied Materials & Interfaces
- Publication Type :
- Periodical
- Accession number :
- ejs40668762
- Full Text :
- https://doi.org/10.1021/acsami.6b12650