2012 Fiscal Year Final Research Report
Fabrication of layered double hydroxide by the liquid phase deposition
| Project/Area Number |
22350094
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Kobe University |
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Principal Investigator |
MIZUHATA Minoru 神戸大学, 大学院・工学研究科, 教授 (10283871)
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| Co-Investigator(Renkei-kenkyūsha) |
AYABE Itsuko 神戸大学, 大学院・工学研究科, 助手 (20167969)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 無機合成 |
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| Research Abstract |
The optimum coordination structure of nickel-fluoro complexes for the preparation of Ni-Al layered double hydroxide(LDH) by liquid phase deposition(LPD) process and the diverse anion exchange properties of as-deposited Ni-Al on ・-alumina powder were quantitatively evaluated for the industrial application of new positive material for alkali secondary batteries. The [NiF6-x-y(NH3)x(OH-)y]n+ was more suitable than [NiF6]4- as the precursor of the deposition of Ni-Al LDH in the LPD reaction, and the improved LPD reaction achieved the synthesis of high purity and high crystallinity Ni-Al LDH. All anion-exchanged Ni-Al LDHs for OH--, Cl--, SO42--, and CH3COO--forms kept the high crystallinity and showed the enlargement of interlayer distances. The tilting angle of the intercalated CH3COO- anions was about 15°. Anion-exchange capacity remained constant at a minimum of 0.8meq g-1in pH >10, increased as pH decreased, and reached a maximum of8 meq g-1at pH 2. Anion-exchange of OH--form of Ni-Al LDH was accelerated by the neutralization of hydroxide ions in interlayers, in addition, the anion-exchange capacity and the crystallinity of Ni-Al LDH could be controlled by the amount of doped aluminum ions.
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Research Products
(27 results)
