Alternativer Identifier:
(KITopen-DOI) 10.5445/IR/1000135718
Verwandter Identifier:
-
Ersteller/in:
Li, Xinyue [Li, Xinyue]
Beitragende:
(Other)
Fortunato, Marco [Fortunato, Marco]

(Other)
Cardinale, Anna [Cardinale, Anna]

(Other)
Sarapulova, Angelina [Sarapulova, Angelina]

(Other)
Njel, Christian [Njel, Christian]

(Other)
Dsoke, Sonia https://orcid.org/0000-0001-9295-2110 [Dsoke, Sonia]
Titel:
Electrochemical study on Nickel Aluminum Layered Double hydroxides as high-performance electrode material for lithium-ion batteries based on sodium alginate binder
Weitere Titel:
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Beschreibung:
(Abstract) Nickel aluminum layered double hydroxide (NiAl LDH) with nitrate in its interlayer is investigated as a negative electrode material for lithium-ion batteries (LIBs). The effect of the potential range (i.e., 0.01 – 3.0 V and 0.4 – 3.0 V vs. Li+/Li) and of the binder on the performance of the material is investigated in 1 M LiPF6 in EC/DMC vs. Li. The NiAl LDH electrode based on sodium alginate (SA) binder shows a high initial discharge specific capacity of 2586 mAh g-1 at 0.05 A g-1 and good stability in the potential range of 0.01-3.0 V vs. Li+/Li, which is better than what obtained with a polyvinylidene difluoride (PVDF)-based electrode. The NiAl LDH electrode with SA binder shows, after 400 cycles at 0.5 A g-1, a cycling retention of 42.2 % with a capacity of 697 mAh g-1 and at a high current density of 1.0 A g-1 shows a retention of 27.6 % with a capacity of 388 mAh g-1 over 1400 cycles. In the same conditions, the PVDF-based electrode retains only 15.6 % with a capacity of 182 mAh g-1 and 8.5 % with a capacity of 121 mAh g-1, respectively. Ex situ X-ray photoelectron spectroscopy (XPS) and ex situ X-ray absorption spectroscopy (XAS) reveal a conversion reaction mechanism during Li+ insertion into the NiAl LDH material. X-ray diffraction (XRD) and XPS have been combined with the electrochemical study to understand the effect of different cut-off potentials on the Li-ion storage mechanism.
(Technical Remarks) These data support the published paper.
Schlagworte:
Layered double hydroxide · lithium-ion batteries · Sodium alginate · Electrode materials · Conversion reaction
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Fachgebiet:
Engineering
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Li, Xinyue
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Status:
Publiziert
Eingestellt von:
kitopen
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Archivierungsdatum:
2023-06-23
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28,1 MB
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kitopen
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