A High-Durability Graphitic Black Pearl Supported Pt Catalyst for a Proton Exchange Membrane Fuel Cell Stack

Abstract

Graphitized black pearl (GBP) 2000 supported Pt nanoparticle catalysts is synthesized by a formic acid reduction method. The results of a half-cell accelerated degradation test (ADT) of two protocols and a single-cell ADT show that, Pt/GBP catalyst has excellent stability and durability compared with commercial Pt/C. Especially, the survival time of Pt/GBP-membrane electrode assembly (MEA) reaches 205 min, indicating that it has better reversal tolerance. After the 1003-hour durability test, the proton exchange membrane fuel cell (PEMFC) stack with Pt/GBP presents a slow voltage degradation rate of 5.19% and 36 μV h−1 at 1000 mA cm−2. The durability of the stack is improved because of the durability and stability of the catalyst. In addition, the post morphology characterizations indicate that the structure and particle size of the Pt/GBP catalyst remain unchanged during the dynamic testing protocol, implying its better stability under dynamic load cycles. Therefore, Pt/GBP is a valuable and promising catalyst for PEMFC, and considered as an alternative to classical Pt/C.

Effective single web–structured electrode for high membrane electrode assembly performance in polymer electrolyte membrane fuel cell

“…This may be because carbon black can be easily oxidized into CO 2 owing to its defect sites, as well as loss of its active sites and conducting pathways for electrons and ions. In other words, the highly graphitized gCSW2500 is more stable because of the defect-free surface (12)(13)(14)(15)60).…”

“…Subsequently, a CL was sprayed on the anode side of the Nafion HP (20 μm) with a Pt loading of 0.05 mg/cm 2 with sizes of 1 cm by 1 cm and 2.5 cm by 2.5 cm. To prepare a single-web cathode, the synthesized Pt/PCA/gCSW2500 was cut with sizes of (52,54,55,60,62) and the (B) MEA performance of the power density (at 0.65 V) and Pt loading at similar conditions (7,30,31,34,38,39,43,44,46,(62)(63)(64)(65)(66)(67)(68). (C) Durability comparisons of the half cell and MEA test results with latest works (8,27,51,62,69,70).…”

“…Performance summary. Comparisons with recent works on the (A) half-cell performance of the mass and specific activities at H 2 SO 4 solution(52,54,55,60,62) and the (B) MEA performance of the power density (at 0.65 V) and Pt loading at similar conditions(7,30,31,34,38,39,43,44,46,(62)(63)(64)(65)(66)(67)(68). (C) Durability comparisons of the half cell and MEA test results with latest works(8,27,51,62,69,70).…”

Effect of Dual Heat Treatment on the Oxygen Reduction Performance of Nanoparticles of Pt on Carbon Catalysts Prepared by Continuous Flow Microwave Technology

“…For instance, Yang et al 13 investigated the corrosion resistance of Pt bonded with modified ultrathin carbon paper (CP) containing different graphene oxide (GO) contents, resulting in an effective enhancement of catalyst corrosion resistance. Li et al 14 synthesized graphitized Pt/graphene-based paper (GBP) catalysts via formic acid reduction, demonstrating outstanding stability and durability. Pan et al 15 utilized graphene as a carbon support to load Pt nanoparticles, enhancing the stability of the catalyst.…”