Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 17, Pages 10858-10865Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b01580
Keywords
palladium nanoparticles; dual-doped graphene; electrocatalyst; fuel cells; formic acid oxidation; methanol oxidation
Funding
- Ministry of Education of the People's Republic of China through the Fundamental Research Funds for the Central Universities [2014B13514, 2015B01914]
- Ministry of Science and Technology of the People's Republic of China through National 973 Plan Project [2015CB057803]
- National Natural Science Foundation of China [51301059, 21501091]
- Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure [SKL201401SIC]
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Optimized designing of highly active electrocatalysts has been regarded as a critical point to the development of portable fuel cell systems with high power density. Here we report a facile and cost-effective strategy to synthesis of ultrafine Pd nanoparticles (NPs) supported on N and S dual-doped graphene (NS-G) nanosheets as multifunctional electrocatalysts for both direct formic acid fuel cell and direct methanol fuel cell. The incorporation of N and S atoms into graphene frameworks is achieved by a thermal treatment process, followed by the controlled growth of Pd NPs via a solvothermal approach. Owning to the unique structural features as well as the strong synergistic effects, the resulting Pd/NS-G hybrid exhibits outstanding electrocatalytic performance toward both formic acid and methanol electro-oxidation, such as higher anodic peak current densities and more exceptional catalytic stability than those of Pd/Vulcan XC-72R and Pd/undoped graphene catalysts. These findings open up new possibility in the construction of advanced Pd-based catalysts, which is conducive to solving the current bottlenecks technologies.
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