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  • Calcagno, Giulio,1990Chalmers tekniska högskola,Chalmers University of Technology (author)

Fast charging negative electrodes based on anatase titanium dioxide beads for highly stable Li-ion capacitors

  • Article/chapterEnglish2020

Publisher, publication year, extent ...

  • Elsevier BV,2020

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:471fe1ff-86b9-4d18-bdfd-14d733cadb33
  • https://research.chalmers.se/publication/516967URI
  • https://doi.org/10.1016/j.mtener.2020.100424DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Hybrid energy storage systems aim to achieve both high power and energy densities by combining supercapacitor-type and battery-type electrodes in tandem. The challenge is to find sustainable materials as fast charging negative electrodes, which are characterized by high capacity retention. In this study, mesoporous anatase beads are synthetized with tailored morphology to exploit fast surface redox reactions. The TiO2-based electrodes are properly paired with a commercial activated carbon cathode to form a Li-ion capacitor. The titania electrode exhibits high capacity and rate performance. The device shows extremely stable performance with an energy density of 27 mWh g-1 at a specific current of 2.5 A g−1 for 10,000 cycles. The remarkable stability is associated with a gradual shift of the potential during cycling as result of the formation of cubic LiTiO2 on the surface of the beads. This phenomenon renews the interest in using TiO2 as negative electrode for Li-ion capacitors.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Lotsari, Antiope,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)antiope (author)
  • Dang, A.University of California (author)
  • Lindberg, Simon,1987Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)lisimo (author)
  • Palmqvist, Anders,1966Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)adde (author)
  • Matic, Aleksandar,1968Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)matic (author)
  • Cavallo, Carmen,1986Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ccarmen (author)
  • Chalmers tekniska högskolaUniversity of California (creator_code:org_t)

Related titles

  • In:Materials Today Energy: Elsevier BV162468-6069

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