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首页> 外文期刊>Energy Conversion & Management >A novel PtRuIr nanoclusters synthesized by selectively electrodepositing Ir on PtRu as highly active bifunctional electrocatalysts for oxygen evolution and reduction
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A novel PtRuIr nanoclusters synthesized by selectively electrodepositing Ir on PtRu as highly active bifunctional electrocatalysts for oxygen evolution and reduction

机译：通过将Ir选择性电沉积在PtRu上作为高活性的双功能电催化剂，用于放氧和还原氧而合成的新型PtRuIr纳米簇

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摘要

To promote development of the unitized regenerative fuel cell, a new energy conversion-storage device, it is essential to look for a bifunctional catalyst with high efficiency and catalytic properties for oxygen evolution and reduction reactions. Herein, a novel PtRuIr electrocatalyst has been synthesized by a pulse electrodeposition method with selectively electrodepositing Ir on PtRu nanoclusters. The prepared catalysts were characterized by electrochemical analysis, scanning electron microscopy and energy dispersive spectrometer. The experimental results show that the PtRuIr catalyst with 10 mol% of Ir exhibits significantiy higher oxygen evolution and reduction currents compared to the PtRu and the PtRuIr catalysts with other contents of Ir, which is also supported by the electrochemical impedance data. In addition, a single water electrolysis cell and a H-2/O(2)fuel cell were performed simultaneously to evaluate the oxygen evolution and reduction performances, respectively, of the novel catalyst. The optimized catalyst with 90 mol% PtRu and 10mol% Ir shows higher oxygen evolution reactivity current density and higher round-trip efficiency in the water electrolysis single cell, and in the meantime, it also exhibits higher oxygen reduction current density and higher power density in the fuel cell, compared to those of the PtRu catalyst.
机译：为了促进单元式可再生燃料电池的发展，一种新的能量转换-存储装置，寻找对于氧释放和还原反应具有高效率和催化特性的双功能催化剂是必不可少的。在此，通过在PtRu纳米簇上选择性地电沉积Ir的脉冲电沉积法合成了新型的PtRuIr电催化剂。通过电化学分析，扫描电子显微镜和能谱仪对制备的催化剂进行了表征。实验结果表明，与含Ir含量的PtRu和含其他Ir的PtRuIr催化剂相比，含10 mol％Ir的PtRuIr催化剂表现出明显更高的析氧和还原电流，这也得到电化学阻抗数据的支持。此外，同时进行了一个水电解槽和一个H-2 / O（2）燃料电池，以分别评估新型催化剂的氧气释放和还原性能。优化后的PtRu为90 mol％，Ir为10 mol％的催化剂在水电解单电池中表现出更高的析氧反应电流密度和往返效率，同时在水电解单电池中表现出更高的氧还原电流密度和功率密度。与PtRu催化剂相比

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  • 来源
    《Energy Conversion & Management》 |2018年第1期|182-187|共6页
  • 作者

    Ye Feng; Xu Chao; Liu Guicheng; Li Jianling; Wang Xindong; Du Xiaoze; Lee Joong Kee;

  • 作者单位

    North China Elect Power Univ, Sch Energy Power & Mech Engn, Key Lab Condit Monitoring & Control Power Plant Eq, Beijing 102206, Peoples R China;

    North China Elect Power Univ, Sch Energy Power & Mech Engn, Key Lab Condit Monitoring & Control Power Plant Eq, Beijing 102206, Peoples R China;

    Korea Inst Sci & Technol, Green City Res Inst, Ctr Energy Convergence Res, Hwarang Ro 14 Gil 5, Seoul 02792, South Korea;

    Univ Sci & Technol Beijing, State Key Lab Adv Met, 30 Coll Rd, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, State Key Lab Adv Met, 30 Coll Rd, Beijing 100083, Peoples R China;

    North China Elect Power Univ, Sch Energy Power & Mech Engn, Key Lab Condit Monitoring & Control Power Plant Eq, Beijing 102206, Peoples R China;

    Korea Inst Sci & Technol, Green City Res Inst, Ctr Energy Convergence Res, Hwarang Ro 14 Gil 5, Seoul 02792, South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Fuel cell; Water electrolysis; Bifunctional electrocatalyst; Oxygen evolution; Oxygen reduction;

    机译：燃料电池;水电解;双功能电催化剂;产氧;氧还原;

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