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Impact of Morphological and Structural Properties of Submicron Core-Shell Fe-Silica Particles on High-Current Power
Delyana Ratnasari1, Eka Lutfi Septiani1, Asep Bayu Dani Nandiyanto2
1Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan.
ACS Omega
|June 16, 2025
Summary
Novel silica-coated iron particles enhance power converter efficiency. This advancement in magnetic materials improves energy storage and reduces losses for electric vehicles and renewable energy systems.
Area of Science:
- Materials Science
- Electrical Engineering
- Nanotechnology
Background:
- High-current power converters are critical for energy-efficient solutions in electric vehicles and renewable energy systems.
- Achieving optimal performance requires advanced magnetic materials with tailored properties for energy storage and loss minimization.
- Existing powder core inductors face challenges in meeting the demands of modern high-current applications.
Purpose of the Study:
- To introduce a novel class of magnetic materials for improved power converter performance.
- To develop submicrometer-sized silica-coated iron (Fe@SiO2) particles using a controlled aerosol process.
- To evaluate the magnetic and performance characteristics of the synthesized Fe@SiO2 particles for power electronics.
Main Methods:
- A one-step aerosol process was employed for the synthesis of submicrometer-sized silica-coated iron (Fe@SiO2) particles.
- Precise control over particle morphology, size, and structural characteristics was achieved during synthesis.
- The performance of the Fe@SiO2 particles was evaluated in terms of packing density, saturation current, and eddy current losses.
Main Results:
- The synthesized Fe@SiO2 particles exhibited improved packing density and saturation current.
- Significant reduction in eddy current losses was observed with the use of Fe@SiO2 particles.
- The tailored magnetic properties of Fe@SiO2 particles boosted the stability and efficiency of power converters.
Conclusions:
- Submicrometer-sized silica-coated iron (Fe@SiO2) particles represent a promising advanced magnetic material for power electronics.
- The one-step aerosol synthesis offers precise control over particle properties, leading to enhanced performance.
- These findings pave the way for more efficient and reliable power conversion systems in demanding applications.
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