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Article Navigation >  Green Energy&Environment  > 2018  >  3(4): 310-317
Chuang Fan, Zihan Huang, Xianyu Hu, Zhaoping Shi, Tianyang Shen, Yawen Tang, Xiaojun Wang, Lin Xu. Freestanding Pt nanosheets with high porosity and improved electrocatalytic performance toward the oxygen reduction reaction. Green Energy&Environment, 2018, 3(4): 310-317. doi: 10.1016/j.gee.2018.05.002
Citation: Chuang Fan, Zihan Huang, Xianyu Hu, Zhaoping Shi, Tianyang Shen, Yawen Tang, Xiaojun Wang, Lin Xu. Freestanding Pt nanosheets with high porosity and improved electrocatalytic performance toward the oxygen reduction reaction. Green Energy&Environment, 2018, 3(4): 310-317. doi: 10.1016/j.gee.2018.05.002
shu

Freestanding Pt nanosheets with high porosity and improved electrocatalytic performance toward the oxygen reduction reaction

doi: 10.1016/j.gee.2018.05.002
  • a.

    School of Life Science, Nanjing Normal University, Nanjing, 210023, China

  • b.

    School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, 210023, China

More Information
  • Corresponding author: E-mail address: wangxiaojun0910@njnu.edu.cn (Xiaojun Wang); E-mail address: xulin001@njnu.edu.cn (Lin Xu)
  • Received date 27 April 2018, Accepted date 29 May 2018, RevRecd date 22 May 2018, Available online 01 June 2018, Publish date 31 October 2018,
    Abstract
  • Because of the intriguing electronic properties, high specific surface areas and confinement effect, two-dimensional (2D) noble metal nanosheets usually exhibit fascinating physicochemical properties and thus hold great promises in fuel cell devices and beyond. Herein, 2D porous Pt nanosheets composed by interweaved ultrathin nanowires are successfully fabricated via a facile NaCl-templated process. Controlled experiments demonstrate that the adoption of NaCl and appropriate ratio of NaCl and Pt precursor are indispensable for the formation of porous Pt nanosheets. Impressively, the cost-effective NaCl template can be recyclable through a simple recrystallization procedure, which may greatly reduce the synthetic cost. By virtue of their structural merits, including high porosity, 2D anisotropy and abundant defects, the resultant porous Pt nanosheets exhibit superior activity and enhanced stability towards the oxygen reduction reaction (ORR) compared to the commercial Pt black in alkaline medium. The present study not only offers a high-performance electrocatalyst for fuel cell devices, but also provides a new perspective toward the rational synthesis of 2D noble metal nanosheets with high porosity and diverse functionalities.

     

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