#6639. Review of the decomposition characteristics of eco-friendly insulation gas

December 2026publication date
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Journal’s subject area:
Electrical and Electronic Engineering;
Energy Engineering and Power Technology;
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Abstract:
As one of the major concerns of climate change, identifying a proper eco-friendly insulation gas for replacing sulphur hexafluoride (SF6) becomes a prominent research topic in recent years. c-C4F8, CF3I, C5F10O, C6F12O and C4F7N are some potential alternatives that are proved to have excellent characteristics, including high insulation strengths and low Global Warming Potentials (GWPs). Beyond these key factors, the decomposition products of these alternatives are closely related to the gases insulation performance, as well as the safety of operators and the compatibility with other materials. In addition, the type and content of decomposition products can be used for fault diagnosis. Therefore, a number of studies were carried out to reveal the decomposition mechanism of these alternative gases, and then to explore the gases application feasibility and strategy. The recent advances obtained in these studies, including theoretical calculation methods, detection of gas decomposition products, decomposition mechanism are reviewed, and some perspectives for future works are proposed.
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