TiO(2) Nanotube Layers Decorated with Al(2)O(3)/MoS(2)/Al(2)O(3) as Anode for Li-ion Microbatteries with Enhanced Cycling Stability

TiO(2) nanotube layers (TNTs) decorated with Al(2)O(3)/MoS(2)/Al(2)O(3) are investigated as a negative electrode for 3D Li-ion microbatteries. Homogenous nanosheets decoration of MoS(2), sandwiched between Al(2)O(3) coatings within self-supporting TNTs was carried out using atomic layer deposition (...

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Detalles Bibliográficos
Autores principales: 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
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7279526/
https://www.ncbi.nlm.nih.gov/pubmed/32429573
http://dx.doi.org/10.3390/nano10050953
Descripción
Sumario:TiO(2) nanotube layers (TNTs) decorated with Al(2)O(3)/MoS(2)/Al(2)O(3) are investigated as a negative electrode for 3D Li-ion microbatteries. Homogenous nanosheets decoration of MoS(2), sandwiched between Al(2)O(3) coatings within self-supporting TNTs was carried out using atomic layer deposition (ALD) process. The structure, morphology, and electrochemical performance of the Al(2)O(3)/MoS(2)/Al(2)O(3)-decorated TNTs were studied using scanning transmission electron microscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and chronopotentiometry. Al(2)O(3)/MoS(2)/Al(2)O(3)-decorated TNTs deliver an areal capacity almost three times higher than that obtained for MoS(2)-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).

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