Prevention of sulfur poisoning and performance recovery of sulfur-poisoned-anode electrode by shifting anode electrode potential

Yuki Yamada; Ryosuke Okubo; Masahiro Kinoshita; Eiki Niwa; Takuya Hashimoto; Keita Tomomichi; Kazuya Sasaki

doi:10.1149/2.0061511jes

Prevention of sulfur poisoning and performance recovery of sulfur-poisoned-anode electrode by shifting anode electrode potential

Yuki Yamada, Ryosuke Okubo, Masahiro Kinoshita, Eiki Niwa, Takuya Hashimoto, Keita Tomomichi, Kazuya Sasaki

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The possibility of performance recovery of the sulfurated Ni-yttria stabilized zirconia anode electrode by shifting the anode electrode potential to the stable region, in which nickel exists as metal, is investigated. The effect of controlling the potential of the anode electrode to the stable region to suppress the generation of nickel sulfide is also revealed. The surface of Ni particle reacts with sulfur to form Ni₃S₂ in a low temperature region; however, the nickel is reduced to metallic by shifting the electrode potential to -1.9 V vs reference electrode exposed to O₂. When the potential of the Ni-based anode electrode is maintained at the value of ≤ -1.9 V vs the reference electrode potential, the sulfidation of nickel is inhibited.

Original language	English
Pages (from-to)	F1107-F1113
Journal	Journal of the Electrochemical Society
Volume	162
Issue number	10
DOIs	https://doi.org/10.1149/2.0061511jes
Publication status	Published - 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/2.0061511jes

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title = "Prevention of sulfur poisoning and performance recovery of sulfur-poisoned-anode electrode by shifting anode electrode potential",

abstract = "The possibility of performance recovery of the sulfurated Ni-yttria stabilized zirconia anode electrode by shifting the anode electrode potential to the stable region, in which nickel exists as metal, is investigated. The effect of controlling the potential of the anode electrode to the stable region to suppress the generation of nickel sulfide is also revealed. The surface of Ni particle reacts with sulfur to form Ni3S2 in a low temperature region; however, the nickel is reduced to metallic by shifting the electrode potential to -1.9 V vs reference electrode exposed to O2. When the potential of the Ni-based anode electrode is maintained at the value of ≤ -1.9 V vs the reference electrode potential, the sulfidation of nickel is inhibited.",

author = "Yuki Yamada and Ryosuke Okubo and Masahiro Kinoshita and Eiki Niwa and Takuya Hashimoto and Keita Tomomichi and Kazuya Sasaki",

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language = "English",

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pages = "F1107--F1113",

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T1 - Prevention of sulfur poisoning and performance recovery of sulfur-poisoned-anode electrode by shifting anode electrode potential

AU - Yamada, Yuki

AU - Okubo, Ryosuke

AU - Kinoshita, Masahiro

AU - Niwa, Eiki

AU - Hashimoto, Takuya

AU - Tomomichi, Keita

AU - Sasaki, Kazuya

PY - 2015

Y1 - 2015

N2 - The possibility of performance recovery of the sulfurated Ni-yttria stabilized zirconia anode electrode by shifting the anode electrode potential to the stable region, in which nickel exists as metal, is investigated. The effect of controlling the potential of the anode electrode to the stable region to suppress the generation of nickel sulfide is also revealed. The surface of Ni particle reacts with sulfur to form Ni3S2 in a low temperature region; however, the nickel is reduced to metallic by shifting the electrode potential to -1.9 V vs reference electrode exposed to O2. When the potential of the Ni-based anode electrode is maintained at the value of ≤ -1.9 V vs the reference electrode potential, the sulfidation of nickel is inhibited.

AB - The possibility of performance recovery of the sulfurated Ni-yttria stabilized zirconia anode electrode by shifting the anode electrode potential to the stable region, in which nickel exists as metal, is investigated. The effect of controlling the potential of the anode electrode to the stable region to suppress the generation of nickel sulfide is also revealed. The surface of Ni particle reacts with sulfur to form Ni3S2 in a low temperature region; however, the nickel is reduced to metallic by shifting the electrode potential to -1.9 V vs reference electrode exposed to O2. When the potential of the Ni-based anode electrode is maintained at the value of ≤ -1.9 V vs the reference electrode potential, the sulfidation of nickel is inhibited.

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Prevention of sulfur poisoning and performance recovery of sulfur-poisoned-anode electrode by shifting anode electrode potential

Abstract

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