Please use this identifier to cite or link to this item: doi:10.22028/D291-32624
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Title: Hybrid Anodes of Lithium Titanium Oxide and Carbon Onions for Lithium‐Ion and Sodium‐Ion Energy Storage
Author(s): Shim, Hwirim
Arnold, Stefanie
Budak, Öznil
Ulbricht, Maike
Srimuk, Pattarachai
Presser, Volker
Language: English
Title: Energy technology : generation, conversion, storage, distribution
Volume: 8
Issue: 11
Startpage: 1
Endpage: 10
Publisher/Platform: Wiley
Year of Publication: 2020
Publikation type: Journal Article
Abstract: This study demonstrates the hybridization of Li4Ti5O12 (LTO) with different types of carbon onions synthesized from nanodiamonds. The carbon onions mixed with a Li4Ti5Ox precursor for sol–gel synthesis. These hybrid materials are tested as anodes for both lithium-ion battery (LIB) and sodium-ion battery (SIB). Electrochemical characterization for LIB application is carried out using 1 m LiPF6 in a 1:1 (by volume) ethylene carbonate and dimethyl carbonate as the electrolyte. For lithium-ion intercalation, LTO hybridized with carbon onions from the inert-gas route achieves an excellent electrochemical performance of 188 mAh g−1 at 10 mA g−1, which maintains 100 mAh g−1 at 1 A g−1 and has a cycling stability of 96% of initial capacity after 400 cycles, thereby outperforming both neat LTO and LTO with onions obtained via vacuum treatment. The performance of the best-performing hybrid material (LTO with carbon onions from argon annealing) in an SIB is tested, using 1 m NaClO4 in ethylene/dimethyl/fluoroethylene carbonate (19:19:2 by mass) as the electrolyte. A maximum capacity of 102 mAh g−1 for the SIB system is obtained, with a capacity retention of 96% after 500 cycles.
DOI of the first publication: 10.1002/ente.202000679
URL of the first publication:
Link to this record: hdl:20.500.11880/29984
ISSN: 2194-4296
Date of registration: 10-Nov-2020
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Chemie
NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Prof. Dr. Volker Presser
Collections:Die Universitätsbibliographie

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