Search results for "nitrogen"

  • Mathematically-designed graphene has improved electrocatalytic activity

    About Overview Organization & Management Strategy Open Positions Access Research Researchers & L... colleagues in Japan and Germany found that adding nitrogen and phosphorus 'dopants' around the well-defined e... s on the substrate ensured the formation of holes. Nitrogen and phosphorus atoms were added. Ultimately a sing... to occur. They doped the graphene sheet by adding nitrogen and phosphorus atoms around hole edges. The graphe...
  • Graphene: Finding catalytic success with three-dimensional nanopores

    About Overview Organization & Management Strategy Open Positions Access Research Researchers & L... atteries, the researchers had to introduce foreign nitrogen dopant atoms into the graphene structure. To do so... to pyridine gas — a benzene-like molecule with one nitrogen and five carbon atoms — and deposited it onto the ... te. Analytical measurements revealed that the new, nitrogen-doped graphene also formed an ordered 3D framework...
  • Lithium batteries: Electrode boosts storage capacity

    About Overview Organization & Management Strategy Open Positions Access Research Researchers & L... re and release large amounts of lithium Nanoporous nitrogen-doped graphene contains a very large surface area ... at anodes made from nanoporous graphene doped with nitrogen can host much more lithium than graphite. The mate... etching the metal away. Its porous structure gave nitrogen-doped graphene an extremely low density, enabling ...
  • Graphene: Co-doping for a hydrogen society

    About Overview Organization & Management Strategy Open Positions Access Research Researchers & L... for a hydrogen society 02/23/2015 The addition of nitrogen and sulfur to nanoporous graphene in combination w... cells Structure of nanoporous graphene doped with nitrogen (red) and sulfur (green). The inset depicts the pr... nal interconnected network of graphene sheets with nitrogen 2 . Enhancing the hydrogen evolution reaction, how...
  • Electrochemical water splitting: Mathematically designed graphene on edge

    About Overview Organization & Management Strategy Open Positions Access Research Researchers & L... sed structures containing the right combination of nitrogen and phosphorus atoms could match — or even outperf... phene with and without holes, and with and without nitrogen and phosphorus dopant atoms. They found that the m... insights. The most catalytically active sites were nitrogen atoms in a ‘pyridinic' bonding arrangement with su...
  • Electrocatalysis: Graphene catalyst splits water

    About Overview Organization & Management Strategy Open Positions Access Research Researchers & L... e catalyst splits water 02/27/2017 A sprinkling of nitrogen, sulfur and phosphorus boosts the ability of nanop... pores in this graphene particle contain traces of nitrogen, sulfur and phosphorus that help to liberate hydro... uggest that adding atoms of sulfur, phosphorus and nitrogen should make graphene-based electrodes as effective...
  • Biosensors: A gentler route to hydrocarbon electrodes

    About Overview Organization & Management Strategy Open Positions Access Research Researchers & L... hey also boosted the film's conductivity by adding nitrogen gas to the argon stream — this probably resulted i... n nitrogen atoms being incorporated into the finished film, a... process called nitrogen doping that helps make the material's electrons mo...
  • Solar energy conversion: Full steam ahead for 3D graphene

    About Overview Organization & Management Strategy Open Positions Access Research Researchers & L... eworks. They deposited atomically thick carbon and nitrogen dopants onto smooth, nanoporous nickel templates a... ed the templates with acid. This strategy produced nitrogen-doped 3D nanoporous graphene structures, 35 microm... r interface via capillary action. Furthermore, the nitrogen dopants helped water droplets stick closer to the ...
  • Lithium–oxygen batteries: Graphene protects cathode catalyst

    About Overview Organization & Management Strategy Open Positions Access Research Researchers & L... mplate with a form of graphene that contained some nitrogen atoms. After loading this nitrogen-doped graphene ... diameter, the researchers added a second layer of nitrogen-doped graphene. Etching away the nickel left a por... deep into these pores and combined with oxygen at nitrogen-binding sites. A lithium–oxygen battery containing...
  • 3D nanoporous graphene electrode for hydrogen production

    About Overview Organization & Management Strategy Open Positions Access Research Researchers & L... ydrogen production Overview Three-dimentional (3D) nitrogen(N) and sulfur(S) co-doped nanoporous graphene with... to form a complex 3D network structure. Due to the nitrogen and sulfur co-doping and abundant nanoporous struc... ion Information Title : High Catalytic Activity of Nitrogen and Sulfur Co-Doped Nanoporous Graphene in the Hyd...