催化学报 ›› 2017, Vol. 38 ›› Issue (6): 1006-1010.DOI: 10.1016/S1872-2067(17)62764-5

• 快讯 • 上一篇    下一篇

石墨化氮化碳负载Cu纳米颗粒用作高效氧还原电催化剂

李赫楠a,c, 徐雅楠a, Hansinee Sitinamaluwaa, Kimal Wasalathilakea, Dilini Galpayab, 闫澄a   

  1. a. 昆士兰科技大学化学、物理与机械工程学院, 昆士兰布里斯班4001, 澳大利亚;
    b. 昆士兰科技大学中央分析研究室, 昆士兰布里斯班4001, 澳大利亚;
    c. 江苏大学化学与化工学院, 江苏镇江 212013
  • 收稿日期:2016-11-30 修回日期:2016-12-31 出版日期:2017-06-18 发布日期:2017-06-08
  • 通讯作者: 闫澄
  • 基金资助:

    澳大利亚国家科研委员会探索项目(DP150101717)

Cu nanoparticles supported on graphitic carbon nitride as an efficient electrocatalyst for oxygen reduction reaction

Henan Lia,c, Yanan Xua, Hansinee Sitinamaluwaa, Kimal Wasalathilakea, Dilini Galpayab, Cheng Yana   

  1. a. School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology (QUT), Brisbane 4001, Queensland, Australia;
    b. Central Analytical Research Facility, Queensland University of Technology (QUT), Brisbane 4001, Queensland, Australia;
    c. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
  • Received:2016-11-30 Revised:2016-12-31 Online:2017-06-18 Published:2017-06-08
  • Supported by:

    This work was supported by the Australian Research Council Discovery Project (DP150101717)

摘要:

高活性低成本氧还原反应(ORR)电催化剂是燃料电池和金属/空气电池等可再生能源技术的关键组成部分. 在离子液体[(C16mim)2CuCl4]和质子化的石墨化氮化碳(g-CN)的存在下,采用简易的水热反应制备了Cu/g-CN电催化剂用于ORR. 与纯的g-CN相比,所制Cu/g-CN表现出高的ORR催化活性:起始电势正移99 mV,为2倍动力学电流密度. 另外,Cu/g-CN还表现出比商用Pt/C (HiSPECTM 3000,20%)催化剂更好的稳定性和甲醇容忍性. 因此,该催化剂作为廉价的高效ORR电催化剂有望应用于燃料电池中.

关键词: 氧还原反应, 石墨化氮化碳, 纳米颗粒, 电催化剂, 离子液体

Abstract:

High active and cost-effective electrocatalysts for the oxygen reduction reaction (ORR) are essential components of renewable energy technologies, such as fuel cells and metal/air batteries. Herein, we propose that ORR active Cu/graphitic carbon nitride (Cu/g-CN) electrocatalyst can be prepared via a facile hydrothermal reaction in the present of the ionic liquid (IL) bis(1-hexadecyl-3- methylimidazolium) tetrachlorocuprate [(C16mim)2CuCl4] and protonated g-CN. The as-prepared Cu/g-CN showed an impressive ORR catalytic activity that a 99 mV positive shift of the onset potential and 2 times kinetic current density can be clearly observed, comparing with the pure g-CN. In addition, the Cu/g-CN revealed better stability and methanol tolerance than commercial Pt/C (HiSPECTM 3000, 20%). Therefore, the proposed Cu/g-CN, as the inexpensive and efficient ORR electrocatalyst, would be a potential candidate for application in fuel cells.

Key words: Oxygen reduction reaction, Graphitic carbon nitride, Nanoparticle, Electrocatalyst, Ionic liquid