| Autor: |
Yongju Lee, Duk-Young Jung |
| Zdroj: |
Journal of Materials Chemistry A; 11/21/2024, Vol. 12 Issue 43, p29948-29956, 9p |
| Abstrakt: |
Lithium aluminium oxide--carbon composites on Al metal substrates (Al/LiAl5O8/C) were successfully synthesized, and their electrical properties were characterized. Sheet-type lithium aluminium layered double hydroxide (LiAl-LDH) was grown on Al metal (Al/S-LDH) and subjected to anion exchange to introduce aliphatic dicarboxylate into the interlayers through solvothermal treatment. The interlayer spacings of dicarboxylate intercalated LiAl-LDH on Al metal (Al/DC-LDH) were expanded from 9.1 Å to 21.4 Å of the (002) reflection in XRD measurement. Remarkable thickness changes of the LiAl-LDH were also observed in SEM data, indicating a strong correlation with the intercalation reaction of long-chain dicarboxylates. The pyrolysis of Al/DC-LDH above 500 °C provides nanostructured electrodes of Al/ LiAl5O8/C nanocomposites, which contain graphitic carbon and an ordered nanostructure depending on the calcination temperatures. Al/LiAl5O8/C electrodes demonstrate improved electrochemical performance with enhanced durability better than Al/S-LDH electrodes, exhibiting an areal capacitance of 0.51 mF cm-2 at a current density of 0.01 mA cm-2. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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