کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1476084 991141 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Metallic electrolyte composites in the framework of the brick-layer model
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Metallic electrolyte composites in the framework of the brick-layer model
چکیده انگلیسی
It is well known that the already large dielectric constants of some electrolytes like BaTiO3 can be enhanced further by adding metallic (e.g. Ni, Cu or Ag) nanoparticles. The enhancement can be quite large, a factor of more than 1000 is possible. The consequences for the properties will be discussed in the present paper applying a brick-layer model (BLM) for calculating dc-resistivities of thin layers and a modified one (PBLM) that includes percolation for calculating dielectric properties of these materials. The PBLM results in an at least qualitative description and understanding of the physical phenomena: This model gives an explanation for the steep increase of the dielectric constant below the percolation threshold and why this increase is connected to a dramatic decrease of the breakdown voltage as well as the ability of storing electrical energy. We conclude that metallic electrolyte composites like BaTiO3 are not appropriate for energy storage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 32, Issue 4, April 2012, Pages 859-864
نویسندگان
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