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Mingde Liang - One of the best experts on this subject based on the ideXlab platform.

  • preparation of lsm ysz Composite Powder for anode of solid oxide electrolysis cell and its activation mechanism
    Journal of Power Sources, 2009
    Co-Authors: Mingde Liang, Jingming Xu, Bo Yu, Jing Chen, Yuchun Zhai
    Abstract:

    Abstract Sr-doped LaMnO3 and Yttria stabilized zirconia (LSM–YSZ) Composite Powder is synthesized by the preparation of LSM on submicron-sized YSZ particles using an in-situ glycin–nitrate combustion method for solid oxide electrolysis cells (SOEC) in this paper. LSM–YSZ Composite Powder and the relevant LSM Powder are characterized by XRD and FESEM. The results show that LSM–YSZ is net-porous Composite Powder while YSZ and LSM do not react with each other during synthesis process. The electrochemical test of the single button cells indicates that the in-situ LSM–YSZ Powder shows better electrolysis performance and lower discharging capability than traditionally direct mixture LSM and YSZ oxygen electrode. When operating in SOEC mode with constant current electrolysis at a current density of 0.33 A cm−2 and 900 °C, the electrolytic voltage decreases from 1.21 V to 1.02 V, which indicates that LSM–YSZ electrode has an activation process at the initial testing stage. A mechanism which involves the incorporation of SrO segregated on the surface into the LSM lattice and the generation of oxygen vacancies in the LSM electrode is proposed for the activation process with O2− oxidation on LSM electrodes.

  • Preparation of LSM–YSZ Composite Powder for anode of solid oxide electrolysis cell and its activation mechanism
    Journal of Power Sources, 2009
    Co-Authors: Mingde Liang, Jingming Xu, Bo Yu, Jing Chen, Yuchun Zhai
    Abstract:

    Abstract Sr-doped LaMnO3 and Yttria stabilized zirconia (LSM–YSZ) Composite Powder is synthesized by the preparation of LSM on submicron-sized YSZ particles using an in-situ glycin–nitrate combustion method for solid oxide electrolysis cells (SOEC) in this paper. LSM–YSZ Composite Powder and the relevant LSM Powder are characterized by XRD and FESEM. The results show that LSM–YSZ is net-porous Composite Powder while YSZ and LSM do not react with each other during synthesis process. The electrochemical test of the single button cells indicates that the in-situ LSM–YSZ Powder shows better electrolysis performance and lower discharging capability than traditionally direct mixture LSM and YSZ oxygen electrode. When operating in SOEC mode with constant current electrolysis at a current density of 0.33 A cm−2 and 900 °C, the electrolytic voltage decreases from 1.21 V to 1.02 V, which indicates that LSM–YSZ electrode has an activation process at the initial testing stage. A mechanism which involves the incorporation of SrO segregated on the surface into the LSM lattice and the generation of oxygen vacancies in the LSM electrode is proposed for the activation process with O2− oxidation on LSM electrodes.

Yuchun Zhai - One of the best experts on this subject based on the ideXlab platform.

  • preparation of lsm ysz Composite Powder for anode of solid oxide electrolysis cell and its activation mechanism
    Journal of Power Sources, 2009
    Co-Authors: Mingde Liang, Jingming Xu, Bo Yu, Jing Chen, Yuchun Zhai
    Abstract:

    Abstract Sr-doped LaMnO3 and Yttria stabilized zirconia (LSM–YSZ) Composite Powder is synthesized by the preparation of LSM on submicron-sized YSZ particles using an in-situ glycin–nitrate combustion method for solid oxide electrolysis cells (SOEC) in this paper. LSM–YSZ Composite Powder and the relevant LSM Powder are characterized by XRD and FESEM. The results show that LSM–YSZ is net-porous Composite Powder while YSZ and LSM do not react with each other during synthesis process. The electrochemical test of the single button cells indicates that the in-situ LSM–YSZ Powder shows better electrolysis performance and lower discharging capability than traditionally direct mixture LSM and YSZ oxygen electrode. When operating in SOEC mode with constant current electrolysis at a current density of 0.33 A cm−2 and 900 °C, the electrolytic voltage decreases from 1.21 V to 1.02 V, which indicates that LSM–YSZ electrode has an activation process at the initial testing stage. A mechanism which involves the incorporation of SrO segregated on the surface into the LSM lattice and the generation of oxygen vacancies in the LSM electrode is proposed for the activation process with O2− oxidation on LSM electrodes.

  • Preparation of LSM–YSZ Composite Powder for anode of solid oxide electrolysis cell and its activation mechanism
    Journal of Power Sources, 2009
    Co-Authors: Mingde Liang, Jingming Xu, Bo Yu, Jing Chen, Yuchun Zhai
    Abstract:

    Abstract Sr-doped LaMnO3 and Yttria stabilized zirconia (LSM–YSZ) Composite Powder is synthesized by the preparation of LSM on submicron-sized YSZ particles using an in-situ glycin–nitrate combustion method for solid oxide electrolysis cells (SOEC) in this paper. LSM–YSZ Composite Powder and the relevant LSM Powder are characterized by XRD and FESEM. The results show that LSM–YSZ is net-porous Composite Powder while YSZ and LSM do not react with each other during synthesis process. The electrochemical test of the single button cells indicates that the in-situ LSM–YSZ Powder shows better electrolysis performance and lower discharging capability than traditionally direct mixture LSM and YSZ oxygen electrode. When operating in SOEC mode with constant current electrolysis at a current density of 0.33 A cm−2 and 900 °C, the electrolytic voltage decreases from 1.21 V to 1.02 V, which indicates that LSM–YSZ electrode has an activation process at the initial testing stage. A mechanism which involves the incorporation of SrO segregated on the surface into the LSM lattice and the generation of oxygen vacancies in the LSM electrode is proposed for the activation process with O2− oxidation on LSM electrodes.

Haitao Wang - One of the best experts on this subject based on the ideXlab platform.

  • Fabrication of TiC/Fe–Ni cermet coatings by reactive thermal spraying of Fe–Ti–Ni–C Composite Powder
    Powder Metallurgy, 2011
    Co-Authors: Haitao Wang, Shuaifeng Zhang, Jihua Huang, J. Zhu, Hua Zhang, Xingke Zhao
    Abstract:

    A mixture of ferrotitanium, nickel Powders and sucrose was heated with an intention of carbonising the sucrose. The tiny ferrotitanium, nickel particles are bound by the carbon obtained from pyrolysis of the sucrose to form a unique structure of Fe–Ti–Ni–C Composite Powder for reactive thermal spraying. The carbon is a reactive constituent as well as the binder in the Composite Powder. TiC/Fe–Ni cermet coating was prepared by reactive plasma spraying of this Powder. A mass of TiC particles were in situ synthesised and uniformly distributed in the Fe–Ni alloy matrix without residuals of raw materials in the coating. The coating is consisted of two different areas: one is the Composite area, where lots of spherical fine TiC particles (100–500 nm) are homogeneously distributed within the Fe–Ni alloy matrix; the other is a small fraction of TiC accumulation. The volume fraction of Composite area is >87%.

  • Fabrication of TiC–Fe cermet coating by plasma spraying of Fe–Ti–C Powder using sucrose as carbon source
    Materials Science and Technology, 2010
    Co-Authors: Haitao Wang, Shuaifeng Zhang, Jihua Huang, J. Zhu, Hua Zhang, Xingke Zhao
    Abstract:

    Abstract A mixture of ferrotitanium and sucrose was heated to carbonise the sucrose, so the ferrotitanium particles were bound by the carbon obtained from the pyrolysis of sucrose. Then a Fe–Ti–C Composite Powder was made for reactive thermal spraying, which could avoid separation of Ti and C during spraying. The carbon is a reactive constituent as well as the binder in the Composite Powder. While this Powder was used to deposit cermet coating by plasma spraying, a mass of TiC particles were in situ synthesised and uniformly distributed within metallic matrix. Average microhardness and surface hardness of the TiC–Fe coating are about 1672·5 HV0·2 and 91·4 HR(15 N) respectively. Adhesive strength value of the coating reaches 61·86 MPa. Finally, the cermet coating has good wear resistance performance.

  • Microstructure of cermet coating prepared by plasma spraying of Fe–Ti–C Powder using sucrose as carbonaceous precursor
    Journal of Alloys and Compounds, 2008
    Co-Authors: Haitao Wang, Jihua Huang, J. Zhu, Hua Zhang, Xinke Zhao
    Abstract:

    Abstract In this paper, a kind of Fe–Ti–C Composite Powder for reactive plasma spraying (RPS) was prepared by heating a mixture of ferrotitanium and sucrose as a carbonaceous precursor, with an intention of carbonizing the sucrose. The tiny ferrotitanium particles were bound by the carbon obtained from the carbonization of sucrose. The carbon was a reactive element as well as a binder in the Composite Powder. While the Composite Powder was sprayed to deposit TiC/Fe Composite coating by RPS, it was proved that the reaction between Ti and C was performed completely to form TiC, without impurity or residual raw materials in the coating. The Composite coating is mainly composed of layers in which a mass of TiC particles are uniformly distributed and enwrapped within the crystal grains of metallic matrix, and the TiC particles in these layers are spherical or near-spherical in submicron-scale or nano-scale sizes.

Jing Chen - One of the best experts on this subject based on the ideXlab platform.

  • preparation of lsm ysz Composite Powder for anode of solid oxide electrolysis cell and its activation mechanism
    Journal of Power Sources, 2009
    Co-Authors: Mingde Liang, Jingming Xu, Bo Yu, Jing Chen, Yuchun Zhai
    Abstract:

    Abstract Sr-doped LaMnO3 and Yttria stabilized zirconia (LSM–YSZ) Composite Powder is synthesized by the preparation of LSM on submicron-sized YSZ particles using an in-situ glycin–nitrate combustion method for solid oxide electrolysis cells (SOEC) in this paper. LSM–YSZ Composite Powder and the relevant LSM Powder are characterized by XRD and FESEM. The results show that LSM–YSZ is net-porous Composite Powder while YSZ and LSM do not react with each other during synthesis process. The electrochemical test of the single button cells indicates that the in-situ LSM–YSZ Powder shows better electrolysis performance and lower discharging capability than traditionally direct mixture LSM and YSZ oxygen electrode. When operating in SOEC mode with constant current electrolysis at a current density of 0.33 A cm−2 and 900 °C, the electrolytic voltage decreases from 1.21 V to 1.02 V, which indicates that LSM–YSZ electrode has an activation process at the initial testing stage. A mechanism which involves the incorporation of SrO segregated on the surface into the LSM lattice and the generation of oxygen vacancies in the LSM electrode is proposed for the activation process with O2− oxidation on LSM electrodes.

  • Preparation of LSM–YSZ Composite Powder for anode of solid oxide electrolysis cell and its activation mechanism
    Journal of Power Sources, 2009
    Co-Authors: Mingde Liang, Jingming Xu, Bo Yu, Jing Chen, Yuchun Zhai
    Abstract:

    Abstract Sr-doped LaMnO3 and Yttria stabilized zirconia (LSM–YSZ) Composite Powder is synthesized by the preparation of LSM on submicron-sized YSZ particles using an in-situ glycin–nitrate combustion method for solid oxide electrolysis cells (SOEC) in this paper. LSM–YSZ Composite Powder and the relevant LSM Powder are characterized by XRD and FESEM. The results show that LSM–YSZ is net-porous Composite Powder while YSZ and LSM do not react with each other during synthesis process. The electrochemical test of the single button cells indicates that the in-situ LSM–YSZ Powder shows better electrolysis performance and lower discharging capability than traditionally direct mixture LSM and YSZ oxygen electrode. When operating in SOEC mode with constant current electrolysis at a current density of 0.33 A cm−2 and 900 °C, the electrolytic voltage decreases from 1.21 V to 1.02 V, which indicates that LSM–YSZ electrode has an activation process at the initial testing stage. A mechanism which involves the incorporation of SrO segregated on the surface into the LSM lattice and the generation of oxygen vacancies in the LSM electrode is proposed for the activation process with O2− oxidation on LSM electrodes.

Jingming Xu - One of the best experts on this subject based on the ideXlab platform.

  • preparation of lsm ysz Composite Powder for anode of solid oxide electrolysis cell and its activation mechanism
    Journal of Power Sources, 2009
    Co-Authors: Mingde Liang, Jingming Xu, Bo Yu, Jing Chen, Yuchun Zhai
    Abstract:

    Abstract Sr-doped LaMnO3 and Yttria stabilized zirconia (LSM–YSZ) Composite Powder is synthesized by the preparation of LSM on submicron-sized YSZ particles using an in-situ glycin–nitrate combustion method for solid oxide electrolysis cells (SOEC) in this paper. LSM–YSZ Composite Powder and the relevant LSM Powder are characterized by XRD and FESEM. The results show that LSM–YSZ is net-porous Composite Powder while YSZ and LSM do not react with each other during synthesis process. The electrochemical test of the single button cells indicates that the in-situ LSM–YSZ Powder shows better electrolysis performance and lower discharging capability than traditionally direct mixture LSM and YSZ oxygen electrode. When operating in SOEC mode with constant current electrolysis at a current density of 0.33 A cm−2 and 900 °C, the electrolytic voltage decreases from 1.21 V to 1.02 V, which indicates that LSM–YSZ electrode has an activation process at the initial testing stage. A mechanism which involves the incorporation of SrO segregated on the surface into the LSM lattice and the generation of oxygen vacancies in the LSM electrode is proposed for the activation process with O2− oxidation on LSM electrodes.

  • Preparation of LSM–YSZ Composite Powder for anode of solid oxide electrolysis cell and its activation mechanism
    Journal of Power Sources, 2009
    Co-Authors: Mingde Liang, Jingming Xu, Bo Yu, Jing Chen, Yuchun Zhai
    Abstract:

    Abstract Sr-doped LaMnO3 and Yttria stabilized zirconia (LSM–YSZ) Composite Powder is synthesized by the preparation of LSM on submicron-sized YSZ particles using an in-situ glycin–nitrate combustion method for solid oxide electrolysis cells (SOEC) in this paper. LSM–YSZ Composite Powder and the relevant LSM Powder are characterized by XRD and FESEM. The results show that LSM–YSZ is net-porous Composite Powder while YSZ and LSM do not react with each other during synthesis process. The electrochemical test of the single button cells indicates that the in-situ LSM–YSZ Powder shows better electrolysis performance and lower discharging capability than traditionally direct mixture LSM and YSZ oxygen electrode. When operating in SOEC mode with constant current electrolysis at a current density of 0.33 A cm−2 and 900 °C, the electrolytic voltage decreases from 1.21 V to 1.02 V, which indicates that LSM–YSZ electrode has an activation process at the initial testing stage. A mechanism which involves the incorporation of SrO segregated on the surface into the LSM lattice and the generation of oxygen vacancies in the LSM electrode is proposed for the activation process with O2− oxidation on LSM electrodes.