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Porous Carbon Nanofiber/Carbon Black Composite as Promising Support for Platinum Catalyst to Enhance Oxygen Reduction Reaction in PEMFC
Author(s) -
Mao Linchang,
Shan Chun,
Fu Kang,
Jin Junhong,
Yang Shenglin,
Li Guang
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201902857
Subject(s) - carbon black , catalysis , carbon nanofiber , cyclic voltammetry , linear sweep voltammetry , platinum , materials science , electrochemistry , composite number , ethylene glycol , porosity , cathode , proton exchange membrane fuel cell , chemical engineering , composite material , chemistry , electrode , organic chemistry , natural rubber , engineering
Porous carbon nanofiber (PCNF) was collaborated with carbon black (CB) to act as composite support (PCNF‐CB) to prepare platinum (Pt) catalyst (Pt/PCNF‐CB) by means of ethylene glycol reduction method. The electrocatalytic activity and stability of Pt/PCNF‐CB and the reference commercial Pt/C catalyst were investigated using cyclic voltammetry (CV) and linear sweep voltammetry (LSV). Among CB content of 20 wt% to 50 wt%, Pt/PCNF‐CB‐30% shows not only better catalytic activity in terms of onset potential and mass activity (MA), but also more durable than Pt/C. After 2000 accelerated potential cycles, Pt/PCNF‐CB‐30% exhibits 68% retention of electrochemical active surface area (ECSA) and 24 mV loss in half‐wave potential, while Pt/C gives 43% retention of ECSA and 94 mV loss in half‐wave potential. Significantly, the single cell performance confirmed that the MEA composed of Pt/PCNF‐CB‐30% as cathode catalyst reveals almost twice maximum power density than that composed of Pt/C catalyst.