Porphyrin-graphene oxide frameworks for long life sodium ion batteries
Article
Nanjundan Ashok, Nanjundan, Gaddam, Rohit Ranganathan, Suresh, Moorthy, Varanasi, Srinivasa Rao, Yang, Dongfang, Bhatia, Suresh K. and Zhao, X. S.. 2017. "Porphyrin-graphene oxide frameworks for long life sodium ion batteries." Journal of Materials Chemistry A. 5 (25), pp. 13204-13211. https://doi.org/10.1039/c7ta02370g
Article Title | Porphyrin-graphene oxide frameworks for long life sodium ion batteries |
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ERA Journal ID | 201058 |
Article Category | Article |
Authors | Nanjundan Ashok, Nanjundan, Gaddam, Rohit Ranganathan, Suresh, Moorthy, Varanasi, Srinivasa Rao, Yang, Dongfang, Bhatia, Suresh K. and Zhao, X. S. |
Journal Title | Journal of Materials Chemistry A |
Journal Citation | 5 (25), pp. 13204-13211 |
Number of Pages | 8 |
Year | 2017 |
Publisher | The Royal Society of Chemistry |
Place of Publication | United Kingdom |
ISSN | 2050-7488 |
2050-7496 | |
Digital Object Identifier (DOI) | https://doi.org/10.1039/c7ta02370g |
Web Address (URL) | https://pubs.rsc.org/en/content/articlelanding/2017/TA/C7TA02370G |
Abstract | Herein, we demonstrate that a porphyrin interspersed graphene-oxide framework with a d-spacing of ∼7.67 Å can significantly enhance the cycling stability of graphene-based anodes in sodium-ion batteries. These robust electrodes can deliver a reversible capacity of ∼200 mA h g−1 at a current density of 100 mA g−1 in the 20th cycle with negligible capacity fading over 700 cycles. In addition to the superior rate tolerance, the specific capacity was stable even after a resting time of one month. The excellent performance may be nested in the larger interlayer spacing, and rich nitrogen content along with the defect sites available for sodium interaction. Experimental studies and density functional theory calculations presented in this work give insights into the structure–property relationship of porphyrin–graphene oxide frameworks and their electrochemical performance. |
Keywords | Composite films |
ANZSRC Field of Research 2020 | 401899. Nanotechnology not elsewhere classified |
349999. Other chemical sciences not elsewhere classified | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
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