Nano-Porous Electro-Catalyst with Textured Surface Active Pd-Pt Islands for Efficient Methanol Tolerant Oxygen Reduction Reaction

被引：6
作者：
Ganesh, P. Anandha [1 ]
Jeyakumar, D. [1 ]
机构：
[1] CSIR, Cent Electrochem Res Inst, Fuel Cell Catalysis & Nanomat Grp, Funct Mat Div, Karaikkudi 630006, Tamil Nadu, India
来源：
CHEMISTRYSELECT | 2017年 / 2卷 / 25期
关键词：
Direct methanol fuel cells; Methanol tolerant oxygen reduction; Nano-porous; Surface Pd-Pt islands; rotating ring disk electrode; FUEL-CELLS; CATHODE CATALYST; ALLOY CATHODE; ORR ACTIVITY; FE; STABILITY; ELECTROCATALYST; NANOPARTICLES; PERFORMANCE;
D O I：
10.1002/slct.201700992
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Herein, we report a simple and elegant aqueous synthesis of Pd100-xPtx (x=5, 10, 15 and 20) nano-porous structures (NPoS) derived from Pd100-xMn2x (x=5, 10, 15 and 20) nano-alloys. Pd100-xPtx/C NPoS exhibit enhanced oxygen reduction reaction (ORR) activity along with higher retention of figure of merit in the presence of methanol compared to HiSPEC Pt/C catalyst. The ORR mass and specific activity values of Pd100-xPtx/C NPoS are high and exceed the U.S. department of energy (DOE) 2017-2020 targets. The enhanced methanol tolerance and ORR activity of Pd100-xPtx/C NPoS is attributed to their unique surface active Pd-Pt islands on nano-porous Pd. Direct methanol fuel cell performance studies employed using Pd85Pt15/C NPoS as cathode material (0.4 mg(Pt)/cm(2)) and HiSPEC PtRu/C NPs as anode material (0.2 mg(Pt)/cm(2)) shows improved direct methanol fuel cell (DMFC) single cell activity at low Pt loading and the results are presented.
引用
收藏
页码：7544 / 7552
页数：9
相关论文
共 36 条
  • [1] Alexander C.J.P., 2012, NIST XRAY PHOTOELECT
  • [2] AnandhaGanesh P., 2017, CHEMISTRYSELECT, V2, P3562
  • [3] Arico A.S., 2009, ELECTROCATALYSIS DIR, P1, DOI DOI 10.1002/9783527627707.CH1
  • [4] Baglio V, 2006, INT J ELECTROCHEM SC, V1, P71
  • [5] Enhanced Methanol Tolerance of Highly Pd rich Pd-Pt Cathode Electrocatalysts in Direct Methanol Fuel Cells
    Choi, Baeck
    Nam, Woo-Hyun
    Chung, Dong Young
    Park, In-Su
    Yoo, Sung Jong
    Song, Jae Chun
    Sung, Yung-Eun
    [J]. ELECTROCHIMICA ACTA, 2015, 164 : 235 - 242
  • [6] Minimizing Operando Demetallation of Fe-N-C Electrocatalysts in Acidic Medium
    Choi, Chang Hyuck
    Baldizzone, Claudio
    Polymeros, George
    Pizzutilo, Enrico
    Kasian, Olga
    Schuppert, Anna K.
    Sahraie, Nastaran Ranjbar
    Sougrati, Moulay-Tahar
    Mayrhofer, Karl J. J.
    Jaouen, Frederic
    [J]. ACS CATALYSIS, 2016, 6 (05): : 3136 - 3146
  • [7] One pot aqueous synthesis of nanoporous Au85Pt15 material with surface bound Pt islands: an efficient methanol tolerant ORR catalyst
    Ganesh, P. Anandha
    Jeyakumar, D.
    [J]. NANOSCALE, 2014, 6 (21) : 13012 - 13021
  • [8] Pt-Pd alloy nanoparticle-decorated carbon nanotubes: a durable and methanol tolerant oxygen reduction electrocatalyst
    Ghosh, Sourov
    Sahu, Ranjan K.
    Raj, C. Retna
    [J]. NANOTECHNOLOGY, 2012, 23 (38)
  • [9] Some reflections on the understanding of the oxygen reduction reaction at Pt(111)
    Gomez-Marin, Ana M.
    Rizo, Ruben
    Feliu, Juan M.
    [J]. BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 2013, 4 : 956 - 967
  • [10] Shaping binary metal nanocrystals through epitaxial seeded growth
    Habas, Susan E.
    Lee, Hyunjoo
    Radmilovic, Velimir
    Somorjai, Gabor A.
    Yang, Peidong
    [J]. NATURE MATERIALS, 2007, 6 (09) : 692 - 697
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