Cobalt substituted layered O3 and P2-type Na-Ti-Ni-Co-O anode materials for emerging sodium-ion batteries

Autor:	Marimuthu Sivakumar, K. Kannan, R. Subadevi, P. Arjunan, M. Kouthaman
Rok vydání:	2021
Předmět:	Materials science chemistry Chemical engineering Rietveld refinement General Chemical Engineering Sodium chemistry.chemical_element Earth crust Trigonal crystal system Cobalt Energy storage Faraday efficiency Anode
Zdroj:	Journal of Industrial and Engineering Chemistry. 102:363-369
ISSN:	1226-086X
DOI:	10.1016/j.jiec.2021.07.021
Popis:	Sodium ion batteries (SIBs) are considered as a propitious candidate for large scale energy storage devices due to the copious of sodium resources in earth crust and low cost. In this work, layered Cobalt (Co) substituted O3-type NaTi0.6Ni0.3Co0.1O2 (O3-NTNC) and P2-type Na0.5Ti0.6Ni0.3Co0.1O2 (P2-NTNC) anode materials were prepared by solid-state reaction for SIBs. The prepared O3-NTNC and P2-NTNC can be assigned to rhombohedral and hexagonal structure with the space group of R-3m and P63/mmc respectively, using Rietveld refinement. O3-NTNC and P2-NTNC delivered the reversible capacity of 108 and 96 mAh g−1 at 0.1C and revealed coulombic efficiency over 90% even after 50 cycles. In addition, partial Co-substitution enhanced the structural stability of the obtained materials during sodiation and desodiation process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1e828c533c1cd1af3bce084b30459d42 https://doi.org/10.1016/j.jiec.2021.07.021 Zobrazit plný text záznamu Full Text from ScienceDirect