Effect of borate on the corrosion behaviors of Ni11Fe10Cu anode in molten carbonate
Source abstract
Abstract
Borates are an excellent electrolyte modifier for molten carbonate electrolyzers, which modulate electrode reactions. However, the addition of borate in molten carbonate causes the degradation of the Ni11Fe10Cu anode. Herein, the corrosion behaviors of Ni, Fe, Cu and Ni11Fe10Cu electrodes in molten Na 2CO 3-K 2CO 3 with/without borates were studied at different temperatures, gas atmospheres, and pre-oxidation conditions. The in situ formed acidic borate at the anode accelerates the dissolution of the oxide scale, which can be suppressed by increasing temperature or decreasing CO 2 partial pressure. The corrosion resistance of the Ni11Fe10Cu anode can be further enhanced by preparing a NiFe 2O 4 scale through electrochemical pre-oxidation.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Molten salt chemistry and electrochemical processes · Advancements in Battery Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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