Single-Layer Ceramic Capacitors with low dielectric loss

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ANU researchers have developed a new giant dielectric constant material with good thermal stability and low dielectric loss. This novel material has application in electrical energy storage for electric vehicles, renewable energy and power grids, and in the device miniaturisation for high density integration into electronic and electrical systems. The new capacitor uses a single-layer instead of the current multi-layer structure used in X-series and Y-series ceramic capacitors in the range of 100 µF -2.2 µF and presents much better performance. In addition, our invented material performs well over the broad temperature range from –190 oC to ~180 oC. It can be used, for instance, in automotive applications where under-hood temperatures may exceed the 85 °C normal rating, where the Y5V and Y5R capacitors cannot be used. The potential of the material as a single layer, high temperature capacitor (up to 150°C) with a capacitance an order of magnitude larger than the currently commercialised high temperature X8R capacitor (currently ~0.22 µF) is also considerable. The resultant devices are anticipated to be the new generation of high capacitance ceramic capacitors.

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Journal: TechConnect Briefs
Volume: 3, Nanotechnology 2014: Electronics, Manufacturing, Environment, Energy & Water
Published: June 15, 2014
Pages: 462 - 463
Industry sectors: Advanced Materials & Manufacturing | Energy & Sustainability
Topic: Energy Storage
ISBN: 978-1-4822-5830-1