Osaka Gas has filed a patent for an alloy material with a metal oxide thin layer to suppress Cr volatilization in fuel cells. The method involves coating a Fe-Cr alloy substrate with Co and oxidizing it in a moisture-containing atmosphere. GlobalData’s report on Osaka Gas gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Osaka Gas, Reformer integrated fuel cells was a key innovation area identified from patents. Osaka Gas's grant share as of January 2024 was 16%. Grant share is based on the ratio of number of grants to total number of patents.
Fuel cell alloy material with metal oxide thin layer
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The patent application (Publication Number: US20230392249A1) describes an alloy material designed for use in electrochemical devices. The alloy material consists of a Fe—Cr based substrate with a layer containing Co, where a Co-containing region is formed within the substrate facing the interface with the layer. Additionally, the layer may include a first layer of metal oxide containing Cr and a second layer of metal oxide containing Co, with the possibility of Mn being present in the second layer.
Furthermore, the Fe—Cr based alloy substrate may contain Mn, Cu, and Cr within specific mass percentages, along with the option of including Ti and Zr within defined mass percentages. The patent also covers the use of this alloy material in various components of electrochemical devices, such as electrodes, electrolytes, counter electrodes, separators, manifolds, interconnectors, and current collectors. Additionally, the patent extends to the application of the alloy material in electrochemical modules, devices incorporating reformers and inverters, solid oxide fuel cells, and energy systems with waste heat management units for efficient heat reuse from the electrochemical devices.
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