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Medientyp:
E-Artikel
Titel:
TiO2 Nanotube Layers Decorated with Al2O3/MoS2/Al2O3 as Anode for Li-ion Microbatteries with Enhanced Cycling Stability
Beteiligte:
Tesfaye, Alexander Teklit;
Sopha, Hanna;
Ayobi, Angela;
Zazpe, Raul;
Rodriguez-Pereira, Jhonatan;
Michalicka, Jan;
Hromadko, Ludek;
Ng, Siowwoon;
Spotz, Zdenek;
Prikryl, Jan;
Macak, Jan M.;
Djenizian, Thierry
Erschienen:
MDPI AG, 2020
Erschienen in:Nanomaterials
Sprache:
Englisch
DOI:
10.3390/nano10050953
ISSN:
2079-4991
Entstehung:
Anmerkungen:
Beschreibung:
<jats:p>TiO2 nanotube layers (TNTs) decorated with Al2O3/MoS2/Al2O3 are investigated as a negative electrode for 3D Li-ion microbatteries. Homogenous nanosheets decoration of MoS2, sandwiched between Al2O3 coatings within self-supporting TNTs was carried out using atomic layer deposition (ALD) process. The structure, morphology, and electrochemical performance of the Al2O3/MoS2/Al2O3-decorated TNTs were studied using scanning transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and chronopotentiometry. Al2O3/MoS2/Al2O3-decorated TNTs deliver an areal capacity almost three times higher than that obtained for MoS2-decorated TNTs and as-prepared TNTs after 100 cycles at 1C. Moreover, stable and high discharge capacity (414 µAh cm−2) has been obtained after 200 cycles even at very fast kinetics (3C).</jats:p>