1-1-3 石炭ガス化ガス中微量不純物による固体酸化物型燃料電池燃料極の性能劣化に関する基礎的研究(1-1 選炭、微量元素、燃料電池,Session 1 石炭・重質油等)

概要

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In an effort to explore the feasibility of coal-syngas use as a fuel for solid oxide fuel cell (SOFC), we conducted some power generation tests using electrolyte-supported button cell with Ni-YSZ anode fueled by the simulated coal syngas with/without doping of selected gaseous/condensable contaminants to know how the trace contaminants in the syngas would cause deterioration of SOFC performance. Doping of metal vapors volatilized from coal ash to fuel gas resulted in the formation of eutectic melting of Ni over the anode layer. When As vapor was injected to the anode chamber, secondary As-Ni phase was formed in the anode which would cause the performance loss. The formation/distribution of solid products among the heavy metal components (As, P and Se) and Ni in the tubular cell was also examined based on the thermo-equilibrium approach.
2012-07-30