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作者:

Wang, Shuo (Wang, Shuo.) | Li, Fan (Li, Fan.) (学者:李钒) | Wang, Yan (Wang, Yan.) | Qiao, Dan (Qiao, Dan.) | Sun, Chunwen (Sun, Chunwen.) | Liu, Jingbo (Liu, Jingbo.)

收录:

EI SCIE

摘要:

A robust triple-component electrocatalyst of sub-2 nm scale consisting of platinum nanoparticles (Pt NPs), iron(II) phthalocyanine (FePc), and reduced graphene oxide (rGO) composite (Pt/FePc@rGO) was fabricated for oxygen reduction reaction (ORR) evaluation. The catalyst was prepared using a Suspension Unit for Reactive Evolution (SURE) approach. The merit of the SURE approach lies in the ease of formation of smaller Pt NPs with a size of 1.76 +/- 0.26 nm and uniformity of dispersion on rGO surface by hydrogen reduction. The Pt/FePc@rGO catalysts show superior mass activities of 281.29 mA mg(pt)(-1) at 0.86 V in an alkaline potassium hydroxide (KOH) electrolyte system. Compared with the commercial Pt on carbon (Pt/C) catalysts, the ORR current density of the Pt/FePc@rGO catalysts shows 2.8 times greater under the same operating conditions, while the average Pt loading is only approximately one-third of the commercial catalyst (Pt/C). The result of accelerated durability test indicates the Pt/FePc rGO catalysts show similar to 8 mV decrease in half-wave potential after 10 000 cycles 0-1.23 V (vs reversible hydrogen electrode) potential cycling; while the Pt/C catalyst was subjected much larger shift (similar to 53 mV). Methanol tolerance study also indicates the Pt/FePc@rGO shows a 2 mV shift corresponding to a current density of 2.5 mA cm(-2), while the commercial Pt/C shows 238 mV shift when an aliquot of 0.1 M methanol and 0.1 M KOH aqueous electrolyte was added. All these results demonstrate that the obtained catalyst exhibited enhanced electrocatalytic activity, excellent antimethanol poisoning property, and long-term stability.

关键词:

long-term stability supported sub-2 nm platinum oxygen reduction reaction suspension unit for reactive evolution antimethanol poisoning property

作者机构:

  • [ 1 ] [Wang, Shuo]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 2 ] [Li, Fan]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, Yan]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 4 ] [Qiao, Dan]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China
  • [ 5 ] [Sun, Chunwen]Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing 100083, Peoples R China
  • [ 6 ] [Sun, Chunwen]Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, Beijing 100190, Peoples R China
  • [ 7 ] [Liu, Jingbo]Texas A&M Univ Kingsville, Dept Chem, Kingsville, TX 78363 USA
  • [ 8 ] [Liu, Jingbo]Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA

通讯作者信息:

  • 李钒

    [Li, Fan]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China;;[Sun, Chunwen]Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing 100083, Peoples R China;;[Sun, Chunwen]Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, Beijing 100190, Peoples R China;;[Liu, Jingbo]Texas A&M Univ Kingsville, Dept Chem, Kingsville, TX 78363 USA;;[Liu, Jingbo]Texas A&M Univ, Dept Chem, College Stn, TX 77843 USA

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来源 :

ACS APPLIED NANO MATERIALS

ISSN: 2574-0970

年份: 2018

期: 2

卷: 1

页码: 711-721

5 . 9 0 0

JCR@2022

被引次数:

WoS核心集被引频次: 23

SCOPUS被引频次: 26

ESI高被引论文在榜: 0 展开所有

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