• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 4
  • 1
  • Tagged with
  • 4
  • 4
  • 3
  • 3
  • 3
  • 3
  • 3
  • 3
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Electrochromic Properties of Mixed Oxides based on Titanium and Niobium

Ulrich, Stephan, Szyszko, Christian, Jung, Sebastian, Vergöhl, Michael 12 September 2018 (has links)
No description available.
2

High capacity vertical aligned carbon nanotube/sulfur composite cathodes for lithium–sulfur batteries

Dörfler, Susanne, Hagen, Markus, Althues, Holger, Tübke, Jens, Kaskel, Stefan, Hoffmann, Michael J. 09 April 2014 (has links) (PDF)
Binder free vertical aligned (VA) CNT/sulfur composite electrodes with high sulfur loadings up to 70 wt% were synthesized delivering discharge capacities higher than 800 mAh g−1 of the total composite electrode mass. / Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
3

High capacity vertical aligned carbon nanotube/sulfur composite cathodes for lithium–sulfur batteries

Dörfler, Susanne, Hagen, Markus, Althues, Holger, Tübke, Jens, Kaskel, Stefan, Hoffmann, Michael J. January 2012 (has links)
Binder free vertical aligned (VA) CNT/sulfur composite electrodes with high sulfur loadings up to 70 wt% were synthesized delivering discharge capacities higher than 800 mAh g−1 of the total composite electrode mass. / Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
4

High energy density and durable pouch-cell graphite-based dual ion battery using concentrated hybrid electrolytes

Sabaghi, Davood, Wang, Gang, Mikhailova, Daria, Morag, Ahiud, Ahmad, Li, Dongqi, Khosravi Haji Vand, Saman, Yu, Minghao, Feng, Xinliang, Shaygan Nia, Ali 23 May 2024 (has links)
Graphite-based dual-ion batteries (GDIBs) represent a promising battery concept for large-scale energy storage on account of low cost, high working voltage, and sustainability. The electrolyte concentration plays a critical role in determining the energy density and cycle life of GDIBs. However, the concentrated electrolytes show low Lithium ions (Li+) transport kinetics, reducing their intercalation and solid electrolyte interface (SEI) formation abilities. Moreover, the GDIBs in the high cut-off voltage suffer from electrolyte degradation, and corrosion of the current collector. Herein, we report a highly concentrated electrolyte formulation based on hybrid lithium hexafluorophosphate (LiPF6) and lithium bis(fluorosulfonyl)imide (LiFSI) salts with a super-wide electrochemical stability window (6 V) and the ability to form SEI and passivation layer on graphite anode and current collector, respectively. By regulating the concentrated LiFSI electrolyte with LiPF6 and solvent additive, the coulombic efficiency of the graphite cathode can be further improved to ∼98%. As a result, GDIB pouch cell exhibits a capacity of 21 mAh g−1 (cell level) at 50 mA g−1, and 98.2% capacity retention after 300 cycles. The resultant battery offers an energy density of 90.3 Wh kg−1, along with a high energy efficiency of 87% and average discharge voltage of 4.3 V.

Page generated in 0.2487 seconds