1 Stable Electrolyte for High Voltage Electrochemical Double-Layer Capacitors
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- Acknowledgement
| 4. Conclusions
A DME-based electrolyte shows great promise for increasing the energy density of supercapacitors. This electrolyte clearly shows an electrochemical window of 3.8 V in three- electrode half cells and 3.5 V in two-electrode full cells. This increased voltage window could double the energy density compared to conventional EDLC electrolytes based on acetonitrile. Further improvements in cycle life and energy density are anticipated by improving electrode fabrication, optimizing the carbon pore structure, and tailoring the carbon surface chemistry. Acknowledgement This work was sponsored by the Oak Ridge National Laboratory Technology Innovation Program using technology transfer license royalties. Oak Ridge National Laboratory is managed by UT-Battelle, LLC, for the U. S. Department of Energy under Contract No. DE-AC05- 00OR22725. SC acknowledges financial support by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. References 1. B. E. Conway, Electrochemical Supercapacitors: Scientific Fundamentals and Technological Applications, Plenum Publishers, New York (1999). 2. R. Kotz and M. Carlen, Electrochim. Acta, 45, 2483 (2000). 3. A. G. Pandolfo and A. F. Hollenkamp, J. Power Sources, 157, 11 (2006). 4. P. Simon and Y. Gogotsi, Nat. Mater., 7, 845 (2008). 12 5. Z. Li, L. Zhang, B. S. Amirkhiz, X. H. Tan, Z. W. Xu, H. L. Wang, B. C. Olsen, C. M. B. Holt and D. Mitlin, Adv. Energy Mater., 2, 431 (2012). 6. H. Wang, Z. W. Xu, A. Kohandehghan, Z. Li, K. Cui, X. H. Tan, T. J. Stephenson, C. K. King'ondu, C. M. B. Holt, B. C. Olsen, J. K. Tak, D. Harfield, A. O. Anyia and D. Mitlin, ACS Nano, 7, 5131 (2013). 7. V. Subramanian, S. C. Hall, P. H. Smith and B. Rambabu, Solid State Ion., 175, 511 (2004). 8. J. W. Long, M. B. Sassin, A. E. Fischer, D. R. Rolison, A. N. Mansour, V. S. Johnson, P. E. Stallworth and S. G. Greenbaum, J. Phys. Chem. C, 113, 17595 (2009). 9. D. Hulicova-Jurcakova, M. Seredych, G. Q. Lu, N. Kodiweera, P. E. Stallworth, S. Greenbaum and T. J. Bandosz, Carbon, 47, 1576 (2009). 10. E. Frackowiak and F. Beguin, Carbon, 39, 937 (2001). 11. B. E. Conway and W. G. Pell, J. Solid State Electrochem., 7, 637 (2003). 12. M. Toupin, T. Brousse and D. Belanger, Chem. Mater., 16, 3184 (2004). 13. G. Pognon, T. Brousse, L. Demarconnay and D. Belanger, J. Power Sources, 196, 4117 (2011). 14. V. Augustyn, P. Simon and B. Dunn, Energy Environ. Sci., 7, 1597 (2014). 15. Z. Li, Z. W. Xu, H. L. Wang, J. Ding, B. Zahiri, C. M. B. Holt, X. H. Tan and D. Mitlin, Energy Environ. Sci., 7, 1708 (2014). 16. H. O. House, E. Feng and N. P. Peet, J. Org. Chem., 36, 2371 (1971). 17. M. Ue, K. Ida and S. Mori, J. Electrochem. Soc., 141, 2989 (1994). 18. M. Winter and R. J. Brodd, Chem. Rev., 104, 4245 (2004). 19. F. Beguin, V. Presser, A. Balducci and E. Frackowiak, Adv. Mater., 26, 2219 (2014). 20. R. Kotz, M. Hahn and R. Gallay, J. Power Sources, 154, 550 (2006). 21. O. Bohlen, J. Kowal and D. U. Sauer, J. Power Sources, 172, 468 (2007). 22. A. Brandt and A. Balducci, J. Electrochem. Soc., 159, A2053 (2012). 23. A. Brandt, P. Isken, A. Lex-Balducci and A. Balducci, J. Power Sources, 204, 213 (2012). 24. K. Chiba, T. Ueda, Y. Yamaguchi, Y. Oki, F. Shimodate and K. Naoi, J. Electrochem. Soc., 158, A872 (2011). 25. O. Borodin, W. Behl and T. R. Jow, J. Phys. Chem. C, 117, 8661 (2013). 26. K. Chiba, T. Ueda, Y. Yamaguchi, Y. Oki, F. Saiki and K. Naoi, J. Electrochem. Soc., 158, A1320 (2011). 27. A. Burke, Electrochim. Acta, 53, 1083 (2007). 28. A. B. McEwen, H. L. Ngo, K. LeCompte and J. L. Goldman, J. Electrochem. Soc., tải về 0.58 Mb. Chia sẻ với bạn bè của bạn:
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