Abstract
A novel type of organic selenide fiber composed of carbonized polyacrylonitrile/selenium (CPAN/Se) has been synthesized by heating polyacrylonitrile-selenium (PAN-Se) fibers via the electrospinning technique at 600°C. The Se molecules are confined by N-containing carbon ring structures in the form of energy-storing selenium side chains in the carbonized PAN matrix. This unique stable chemical structure with a conductive carbon skeleton connected to the selenium side chains and excellent mechanical stability can allow CPAN/Se composite cathodes to be charged and discharged in a low-cost carbonate-based electrolyte with excellent long cycle stability and quite good rate performance. The superior electrochemical performance of CPAN/Se electrodes is demonstrated in both lithium-ion and sodium-ion batteries, where they have delivered a high capacity of nearly 600 mA h g-1 for 500 cycles in lithium-selenium (Li-Se) batteries and 410 mA h g-1 for 300 cycles in sodium-selenium (Na-Se) batteries at 0.3 C, respectively. © The Royal Society of Chemistry 2014.
| Original language | English |
|---|---|
| Pages (from-to) | 61673-61678 |
| Journal | RSC Advances |
| Volume | 4 |
| Issue number | 106 |
| DOIs | |
| Publication status | Published - 2014 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.Funding
Support of this work by the Australian Research Council (ARC) Discovery Project (DP1094261) is acknowledged. Furthermore, the authors would like to thank Dr Tania Silver for critical reading of the manuscript and valuable remarks.
