[Mo 3 S 13 ] 2− Cluster Decorated Sulfur‐doped Reduced Graphene Oxide as Noble Metal‐Free Catalyst for Hydrogen Evolution Reaction in Polymer Electrolyte Membrane Electrolyzers

2018 ◽  
Vol 5 (18) ◽  
pp. 2672-2680 ◽  
Author(s):  
Chuyen V. Pham ◽  
Alessandro Zana ◽  
Matthias Arenz ◽  
Simon Thiele
Keyword(s):  
Graphene Oxide ◽  
Polymer Electrolyte ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Noble Metal ◽  
Hydrogen Evolution Reaction ◽  
Polymer Electrolyte Membrane ◽  
Metal Free ◽  
Electrolyte Membrane ◽  
Reduced Graphene

Incorporation of Platinum and Gold Partially Reduced Graphene Oxide into Polymer Electrolyte Membrane Fuel Cells for Increased Output Power and Carbon Monoxide Tolerance

MRS Advances ◽  
2016 ◽  
Vol 1 (20) ◽  
pp. 1477-1486 ◽  
Author(s):  
Rebecca Isseroff ◽  
Lee Blackburn ◽  
Jaymo Kang ◽  
Hongfei Li ◽  
Molly Gentleman ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Graphene Oxide ◽  
Polymer Electrolyte ◽  
Reduced Graphene Oxide ◽  
Output Power ◽  
Power Output ◽  
Room Temperature ◽  
Polymer Electrolyte Membrane ◽  
Electrolyte Membrane ◽  
Reduced Graphene

ABSTRACTThe Polymer Electrolyte Membrane Fuel Cells (PEMFCs) platinum catalyst’s susceptibility to poisoning by carbon monoxide (CO) reduces its output power. In an effort to diminish poisoning, gold and platinum nanoparticles were incorporated onto partially reduced graphene oxide (Au/Pt-prGO) sheets to reduce both nanoparticle aggregation and the amount of precious metal needed. Applying this material onto the electrodes and Nafion membrane of a PEMFC was hypothesized to increase CO tolerance as well as power output.Aliquots of graphene oxide (GO) were functionalized with platinum and/or gold nanoparticles using a simple desktop synthesis at room temperature. Partial reduction with NaBH4 maintained hydrophilic solubility. Test solutions applied to electrodes and to electrodes + Nafion membrane were first tested in a PEM fuel cell with a pure H2 gas feed and then repeated with a H2 gas feed containing 1000 ppm of CO. Test arrangements averaged doubling the output power of the poisoned control, with the most effective yielding an output power ∼250% that of the poisoned control. Additionally, each system’s poisoned output power (PP) was compared to its highest possible output power (PM), with the most effective setup showing no reduction in output power, even with a H2 gas feed containing 1000 ppm of CO. Thus, this offers promise of a simple, cost-effective method of both improving PEMFC power output while reducing or even eliminating CO poisoning at room temperature.

Hierarchical dandelion-flower-like cobalt-phosphide modified CdS/reduced graphene oxide-MoS2 nanocomposites as a noble-metal-free catalyst for efficient hydrogen evolution from water

2016 ◽  
Vol 6 (16) ◽  
pp. 6197-6206 ◽  
Author(s):  
D. Amaranatha Reddy ◽  
Jiha Choi ◽  
Seunghee Lee ◽  
Yujin Kim ◽  
Sangyeob Hong ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Noble Metal ◽  
Facile Synthesis ◽  
Metal Free ◽  
Cobalt Phosphide ◽  
Reduced Graphene

This work demonstrates the facile synthesis of CdS/RGO-MoS2@CoP photocatalyst for H2 production via water splitting.

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