An all-polymer charge storage device

Applied Physics Letters

Volumn 71, Issue 11, 1997, Pages 1582-1584

  Gofer, Yossef ^a   Sarker, Haripada ^a   Killan, Jeffrey G ^a   Poehler, Theodore O ^a   Searson, Peter C ^a  

^a Johns Hopkins University   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001188287     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.120074     Document Type: Article

References (26)

1. C. K. Chiang, Y. W. Park, A. J. Heeger, H. Shirakawa, E. J. Louis, and A. G. MacDiarmid, Phys. Rev. Lett. 39, 1098 (1977).
2. C. E. D. Chidsey and R. W. Murray, Science 231, 25 (1986); M. S. Wrighton, Science 231, 32 (1986).
3. C. E. D. Chidsey and R. W. Murray, Science 231, 25 (1986); M. S. Wrighton, Science 231, 32 (1986).
4. D. Braun and A. J. Heeger, Appl. Phys. Lett. 58, 1982 (1991); J. J. M. Halls, C. A. Walsh, N. C. Greenham, E. A. Marseglia, R. H. Friend, S. C. Moratti, and A. B. Holmes, Nature (London) 376, 498 (1995); M. Granstrom, M. Berggren, and O. Inganas, Science 267, 1479 (1995).
5. D. Braun and A. J. Heeger, Appl. Phys. Lett. 58, 1982 (1991); J. J. M. Halls, C. A. Walsh, N. C. Greenham, E. A. Marseglia, R. H. Friend, S. C. Moratti, and A. B. Holmes, Nature (London) 376, 498 (1995); M. Granstrom, M. Berggren, and O. Inganas, Science 267, 1479 (1995).
6. D. Braun and A. J. Heeger, Appl. Phys. Lett. 58, 1982 (1991); J. J. M. Halls, C. A. Walsh, N. C. Greenham, E. A. Marseglia, R. H. Friend, S. C. Moratti, and A. B. Holmes, Nature (London) 376, 498 (1995); M. Granstrom, M. Berggren, and O. Inganas, Science 267, 1479 (1995).
7. C. L. Curtis, J. E. Ritchie, and M. J. Sailor, Science 262, 2014 (1993).
8. F. Gamier, R. Hajlaoui, A. Yassar, and P. Srivastava, Science 265, 1684 (1994).
9. See, for example, N. Oyama, T. Tatsuma, T. Sato, and T. Sotomura, Nature (London) 373, 598 (1995); M. Maxfield, T. R. Jow, S. Gould, M. G. Sewchok, and L. W. Shacklette, J. Electrochem. Soc. 135, 299 (1988).
10. See, for example, N. Oyama, T. Tatsuma, T. Sato, and T. Sotomura, Nature (London) 373, 598 (1995); M. Maxfield, T. R. Jow, S. Gould, M. G. Sewchok, and L. W. Shacklette, J. Electrochem. Soc. 135, 299 (1988).
11. P. Novak, K. Muller, K. S. V. Santhanam, and O. Haas, Chem. Rev. 97, 207 (1997); G. P. Evans, in Advances in Electrochemical Science and Engineering, edited by H. Gerischer and C. W. Tobias (VCH, Amsterdam, 1990), Vol. 1; R. J. Waltman and J. Bargon, Can. J. Chem. 64, 76 (1986).
12. P. Novak, K. Muller, K. S. V. Santhanam, and O. Haas, Chem. Rev. 97, 207 (1997); G. P. Evans, in Advances in Electrochemical Science and Engineering, edited by H. Gerischer and C. W. Tobias (VCH, Amsterdam, 1990), Vol. 1; R. J. Waltman and J. Bargon, Can. J. Chem. 64, 76 (1986).
13. P. Novak, K. Muller, K. S. V. Santhanam, and O. Haas, Chem. Rev. 97, 207 (1997); G. P. Evans, in Advances in Electrochemical Science and Engineering, edited by H. Gerischer and C. W. Tobias (VCH, Amsterdam, 1990), Vol. 1; R. J. Waltman and J. Bargon, Can. J. Chem. 64, 76 (1986).
14. J. Roncali, Chem. Rev. 92, 711 (1992); A. Rudge, I. Raistrick, S. Gottesfeld, and J. P. Ferraris, Electrochim. Acta 39, 273 (1994); R. J. Waltman, A. F. Diaz, and J. Bargon, J. Phys. Chem. 88, 4343 (1984).
15. J. Roncali, Chem. Rev. 92, 711 (1992); A. Rudge, I. Raistrick, S. Gottesfeld, and J. P. Ferraris, Electrochim. Acta 39, 273 (1994); R. J. Waltman, A. F. Diaz, and J. Bargon, J. Phys. Chem. 88, 4343 (1984).
16. J. Roncali, Chem. Rev. 92, 711 (1992); A. Rudge, I. Raistrick, S. Gottesfeld, and J. P. Ferraris, Electrochim. Acta 39, 273 (1994); R. J. Waltman, A. F. Diaz, and J. Bargon, J. Phys. Chem. 88, 4343 (1984).
17. For details of the synthesis of the monomers, see H. Sarker, Y. Gofer, J. G. Killian, T. O. Poehler, and P. C. Searson, Synth. Met. 88 179 (1997). We have synthesized poly-2 FPT, poly-3 FPT, poly-4 FPT, poly-2,4 DFPT, poly-3,5 DFPT, poly-3,4,5 TFPT.
18. The electrolyte/solvent system was chosen to give a sufficiently large potential range to access the polymerization potential as well as the n-doped and p-doped states of the polymers. The properties of the polymer films were characterized in several solvents (propylene carbonate, acetonitrile, benzonitrile, and tetrahydrofuran) combined with a number of salts (tetramethylammonium trifluoromethanesulfonate, lithium perchlorate, tetraethylammonium tetrafluoroborate, tetraethylammonium perchlorate, tetrabutylammonium hexafluorophosphate, and lithium tetrafluoroborate).
19. -2 of each polymer were deposited onto a platinum substrate resulting in a film thickness of about 0.5 μm. The polymerization reactions involved 2.08 electrons per monomer unit for both 3,5 DFPT and 3,4,5 TFPT. The charge associated with the electropolymerization reaction was determined by subtracting the neutralization charge, obtained immediately after polymerization, from the total deposition charge. The corresponding polymerization efficiencies were 96.2%, demonstrating that there is a low concentration of short chains in the polymer films.
20. The charge capacities were determined from the total charge passed during complete discharge normalized to the total mass of the electro-active polymers. The energy densities are the product of the charge capacity and cell voltage during discharge.
21. The doping density for p doping of 3,4,5 TFPT was 0.23 e/mu and for n doping of 3,5 DFPT was 0.26 e/mu. The average cycling efficiency for p doping of the 3,5 DFPT was 99.92 (8% loss of capacity over 100 cycles). The average cycling efficiency for n doping of the 3,4,5 TFPT was not the highest of all the monomers studied, however, the doping density was amongst the highest. Detailed characterization of the series of fluorine-substituted polyphenylthiophenes will be reported elsewhere.
22. R. Bittihn, G. Ely, and F. Woeffler, Makromol. Chem. Macromol. Symp. 8, 51 (1987); T. Osaka, K. Naoi, S. Ogano, and S. Nakamura, J. Electrochem. Soc. 134, 2096 (1987).
23. R. Bittihn, G. Ely, and F. Woeffler, Makromol. Chem. Macromol. Symp. 8, 51 (1987); T. Osaka, K. Naoi, S. Ogano, and S. Nakamura, J. Electrochem. Soc. 134, 2096 (1987).
24. The all-polymer devices were charged at constant current of 200 μA up to 2.8 V and held at this voltage until the current dropped to 40 μA. At this point the devices were discharged at a constant current of 200 μA until the cell voltage dropped to 1 V. This procedure corresponds to 100% depth of discharge.
25. K. Brandt, Solid State Ion. 69, 173 (1994).
26. D. Linden, in Handbook of Batteries, edited by D. Linden (McGraw-Hill, New York, 1995), Chap. 23.