@phdthesis{Fleischmann2018,
  author    = {Simon Fleischmann},
  title     = {Hybridization of electrochemical energy storage : nanohybrid materials and hybrid cell architectures for high energy, power and stability},
  doi       = {10.22028/D291-27560},
  url       = {https://nbn-resolving.org/urn:nbn:de:bsz:291:415-5222},
  pages     = {VI, 148, IX},
  year      = {2018},
  abstract  = {A successful transition from fossil to renewable energy sources requires electrochemical energy storage devices that surpass current lithium-ion battery technology in specific power and performance stability. In this PhD thesis, hybrid materials containing carbon and metal oxide components are synthesized, and hybrid cell architectures employing both a Faradaic and a capacitive electrode are explored. For material hybridization, atomic layer deposition is used to deposit nanoscopic layers of metal oxide on carbon substrates. This strategy allows to combine the high capacity of Faradaic reactions with the high power enabled by the large electrode-electrolyte interface. The porosity of the carbon substrate plays a major role in the resulting electrochemical performance; ideal carbon substrates show internal mesopores (2 50 nm). Hybrid supercapacitor devices are optimized by using these hybrid materials as the cell's Faradaic electrode. It is demonstrated that the kinetics and overpotentials of the Faradaic reactions are the determining factors to enable fast and efficient cell performance. Finally, the specific energy of hybrid supercapacitor cells is drastically increased by using lithium- or sodium-containing ionic liquid electrolyte. This novel concept increases the accessible cell voltage, operation temperature window, and safety of the hybrid supercapacitor cell.},
  language  = {en}
}