Journal
SOLID STATE SCIENCES
Volume 71, Issue -, Pages 123-129Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solidstatesciences.2017.07.014
Keywords
Graphene; Fuel cell; Glucose; Platinum; Palladium
Funding
- URC's PDF scheme of the University of Hong Kong
- CRCG grant of the University of Hong Kong [201511159115]
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Fabrication of electrocatalyst for direct glucose fuel cell (DGFC) operation involves destructive preparation methods with the use of stabilizer like binder, which may cause activity depreciation. Binder-free electrocatalytic electrode becomes a possible solution to the above problem. Binder-free bimetallic Pd-Pt loaded graphene aerogel on nickel foam plates with different Pd/Pt ratios (1: 2.32, 1:1.62, and 1:0.98) are successfully fabricated through a green one-step mild reduction process producing a Pd-Pt/GO/nickel form plate (NFP) composite. Anode with the binder-free electrocatalysts exhibit a strong activity in a batch type DGFC unit under room temperature. The effects of glucose and KOH concentrations, and the Pd/Pt ratios of the electrocatalyst on the DGFC performance are also studied. Maximum power density output of 1.25 mW cm(-2) is recorded with 0.5 M glucose/3 M KOH as the anodic fuel, and Pd1Pt0.98/GA/NFP as catalyst, which is the highest obtained so far among other types of electrocatalyst. (C) 2017 Elsevier Masson SAS. All rights reserved.
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