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Direct Integration of Strained-Pt Catalysts into Proton-Exchange-Membrane Fuel Cells with Atomic Layer Deposition.
Xu, Shicheng; Wang, Zhaoxuan; Dull, Sam; Liu, Yunzhi; Lee, Dong Un; Lezama Pacheco, Juan S; Orazov, Marat; Vullum, Per Erik; Dadlani, Anup Lal; Vinogradova, Olga; Schindler, Peter; Tam, Qizhan; Schladt, Thomas D; Mueller, Jonathan E; Kirsch, Sebastian; Huebner, Gerold; Higgins, Drew; Torgersen, Jan; Viswanathan, Venkatasubramanian; Jaramillo, Thomas Francisco; Prinz, Fritz B.
Afiliación
  • Xu S; Department of Mechanical Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Wang Z; Department of Material Science and Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Dull S; Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Liu Y; Department of Material Science and Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Lee DU; Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Lezama Pacheco JS; Department of Earth System Science, Stanford University, Stanford, CA, 94305, USA.
  • Orazov M; Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Vullum PE; SINTEF, Trondheim, 7465, Norway.
  • Dadlani AL; Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Trondheim, 7491, Norway.
  • Vinogradova O; Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA.
  • Schindler P; Department of Material Science and Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Tam Q; Department of Mechanical Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Schladt TD; Volkswagen Group Research, 38436, Wolfsburg, Germany.
  • Mueller JE; Volkswagen Group Research, 38436, Wolfsburg, Germany.
  • Kirsch S; Volkswagen Group Research, 38436, Wolfsburg, Germany.
  • Huebner G; Volkswagen Group Research, 38436, Wolfsburg, Germany.
  • Higgins D; Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
  • Torgersen J; Department of Chemical Engineering, McMaster University, Hamilton, ON, L8S 4L7, Canada.
  • Viswanathan V; Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Trondheim, 7491, Norway.
  • Jaramillo TF; Chemical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA.
  • Prinz FB; Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, 15213, USA.
Adv Mater ; 33(30): e2007885, 2021 Jul.
Article en En | MEDLINE | ID: mdl-34110653
The design and fabrication of lattice-strained platinum catalysts achieved by removing a soluble core from a platinum shell synthesized via atomic layer deposition, is reported. The remarkable catalytic performance for the oxygen reduction reaction (ORR), measured in both half-cell and full-cell configurations, is attributed to the observed lattice strain. By further optimizing the nanoparticle geometry and ionomer/carbon interactions, mass activity close to 0.8 A mgPt -1 @0.9 V iR-free is achievable in the membrane electrode assembly. Nevertheless, active catalysts with high ORR activity do not necessarily lead to high performance in the high-current-density (HCD) region. More attention shall be directed toward HCD performance for enabling high-power-density hydrogen fuel cells.
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Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
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Texto completo: 1 Bases de datos: MEDLINE Idioma: En Revista: Adv Mater Asunto de la revista: BIOFISICA / QUIMICA Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos