TiO2 Nanotube Layers Decorated with Al2O3/MoS2/Al2O3 as Anode for Li-ion Microbatteries with Enhanced Cycling Stability

Tesfaye, Alexander Teklit; Sopha, Hanna; Ayobi, Angela; Zazpe, Raul; Rodriguez Pereira, Jhonatan; Hromádko, Luděk; Ng, Siowwoon; Spotz, Zdenek; Prikryl, Jan; Macak, Jan; Djenizian, Thierry; Michalicka, Jan

TiO2 Nanotube Layers Decorated with Al2O3/MoS2/Al2O3 as Anode for Li-ion Microbatteries with Enhanced Cycling Stability

Tesfaye, Alexander Teklit; Sopha, Hanna; Ayobi, Angela; Zazpe, Raul; Rodriguez Pereira, Jhonatan; Hromádko, Luděk; Ng, Siowwoon; Spotz, Zdenek; Prikryl, Jan; Macak, Jan; Djenizian, Thierry; Michalicka, Jan

10.3390/nano10050953

Soubory tohoto záznamu

URI: https://hdl.handle.net/10195/76764

Datum publikování: 2020-05-17

Typ dokumentu: Article

Zdrojový dokument: Nanomaterials 2020, 10(5)

ISSN: 2079-4991

Vydavatelská verze: https://www.mdpi.com/2079-4991/10/5/953

Abstrakt:

TiO2 nanotube layers (TNTs) decorated with Al2O3/MoS2/Al2O3 is 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 the 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 3 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).

Zobrazit celý záznam