Porous Carbon Nanofiber/Carbon Black Composite as Promising Support for Platinum Catalyst to Enhance Oxygen Reduction Reaction in PEMFC

被引:7
作者
Mao, Linchang [1 ]
Shan, Chun [1 ]
Fu, Kang [1 ]
Jin, Junhong [1 ]
Yang, Shenglin [1 ]
Li, Guang [1 ]
机构
[1] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China
关键词
Composite support; Electrochemistry; Fuel cells; Oxygen reduction reaction (ORR); Porous carbon nanofiber (PCNF); MESOPOROUS CARBON; GRAPHENE NANOPLATELETS; ELECTROCATALYST; PERFORMANCE; NANOPARTICLES; DURABILITY; NANOCATALYSTS; DEPOSITION; ULTRATHIN; NANOWIRE;
D O I
10.1002/slct.201902857
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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.
引用
收藏
页码:10555 / 10560
页数:6
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