Preparation and Characterization of Ni/Al‐Layered Double Hydroxide
| Autor: | Shintaro Ishida, Akiko Sugimoto, Kenzo Hanawa |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry Mineralogy Condensed Matter Physics Electrochemistry Alkali metal eye diseases Surfaces Coatings and Films Electronic Optical and Magnetic Materials Metal Crystallinity chemistry.chemical_compound Chemical engineering visual_art X-ray crystallography Materials Chemistry visual_art.visual_art_medium Hydroxide Lamellar structure sense organs Polarization (electrochemistry) |
| Zdroj: | Journal of The Electrochemical Society. 146:1251-1255 |
| ISSN: | 1945-7111 0013-4651 |
| DOI: | 10.1149/1.1391754 |
| Popis: | The electrochemical behavior of chemically prepared α-phase Al-substituted Ni(OH) 2 was investigated in relation to its crystallinity. α-Phase samples with 5-20% Al were prepared by precipitation, and the crystallinity was tailored by changing the metal/alkali ratio or the aging temperature. A highly crystallized sample was obtained without controlling the reaction pH. Both the utilization and half-discharge potential increased as the sample crystallinity improved. A maximum capacity of 381 mAh/g and utilization of 190% were obtained. The crystallinity dependence of the cell performance was explained by the reduction of polarization because of a more ordered structure which led to a faster solid-state reaction. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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