High-Temperature Dielectric Materials for Electrical Energy Storage

TLDR

The demand for high‑temperature dielectric materials arises from emerging applications such as electric vehicles, wind generators, solar converters, aerospace power conditioning, and downhole oil and gas exploration, where power systems and electronic devices must operate at elevated temperatures. This article reviews recent progress in nanostructured dielectric materials for high‑temperature capacitive energy storage. The review surveys polymers, polymer nanocomposites, bulk ceramics, and thin films, covering both commercial products and cutting‑edge research, and discusses design criteria such as dielectric properties, temperature stability, energy density, and charge‑discharge efficiency. The review identifies advantages and shortcomings of current dielectric materials and outlines challenges and future research directions.

Abstract

The demand for high-temperature dielectric materials arises from numerous emerging applications such as electric vehicles, wind generators, solar converters, aerospace power conditioning, and downhole oil and gas explorations, in which the power systems and electronic devices have to operate at elevated temperatures. This article presents an overview of recent progress in the field of nanostructured dielectric materials targeted for high-temperature capacitive energy storage applications. Polymers, polymer nanocomposites, and bulk ceramics and thin films are the focus of the materials reviewed. Both commercial products and the latest research results are covered. While general design considerations are briefly discussed, emphasis is placed on material specifications oriented toward the intended high-temperature applications, such as dielectric properties, temperature stability, energy density, and charge-discharge efficiency. The advantages and shortcomings of the existing dielectric materials are identified. Challenges along with future research opportunities are highlighted at the end of this review.