Solid Acid Electrochemical Cell for the Production of Hydrogen from Ammonia
Source abstract
Abstract
Summary Production of high-purity hydrogen by thermal-electrochemical decomposition of ammonia at an intermediate temperature of 250°C is demonstrated. The process is enabled by use of a solid-acid-based electrochemical cell (SAEC) in combination with a bilayered anode, comprising a thermal-cracking catalyst layer and a hydrogen electrooxidation catalyst layer. Cs-promoted Ru on carbon nanotubes (Ru/CNT) serves as the thermal decomposition catalyst, and Pt on carbon black mixed with CsH2PO4 is used to catalyze hydrogen electrooxidation. Cells were operated at 250°C with humidified dilute ammonia supplied to the anode and humidified hydrogen supplied to the counter electrode. A current density of 435 mA/cm2 was achieved at a potential of 0.4 V and ammonia flow rate of 30 sccm. With a demonstrated faradic efficiency for hydrogen production of 100%, the process yields hydrogen at a rate of 1.48 m o l H 2 / g c a t h .
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Solid-state spectroscopy and crystallography · Ammonia Synthesis and Nitrogen Reduction · Inorganic Fluorides and Related Compounds
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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