کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1525823 1511847 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Crystallite size effects in stacking faulted nickel hydroxide and its electrochemical behaviour
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Crystallite size effects in stacking faulted nickel hydroxide and its electrochemical behaviour
چکیده انگلیسی

β-Nickel hydroxide comprises a long range periodic arrangement of atoms with a stacking sequence of AC AC AC—having an ideal composition Ni(OH)2. Variation in the preparative conditions can lead to the changes in the stacking sequence (AC AC BA CB AC AC or AC AC AB AC AC). This type of variation in stacking sequence can result in the formation of stacking fault in nickel hydroxide. The stability of the stacking fault depends on the free energy content of the sample. Stacking faults in nickel hydroxide is essential for better electrochemical activity. Also there are reports correlating particle size to the better electrochemical activity. Here we present the effect of crystallite size on the stacking faulted nickel hydroxide samples. The electrochemical performance of stacking faulted nickel hydroxide with small crystallite size exchanges 0.8e/Ni, while the samples with larger crystallite size exchange 0.4e/Ni. Hence a right combination of crystallite size and stacking fault content has to be controlled for good electrochemical activity of nickel hydroxide.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 114, Issues 2–3, 15 April 2009, Pages 618–623
نویسندگان
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