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Direct Integration of Strained‐Pt Catalysts into Proton‐Exchange‐Membrane Fuel Cells with Atomic Layer Deposition
Author(s) -
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.
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202007885
Subject(s) - proton exchange membrane fuel cell , catalysis , materials science , atomic layer deposition , platinum , fabrication , platinum nanoparticles , hydrogen , membrane , nanoparticle , chemical engineering , electrode , layer (electronics) , deposition (geology) , nanotechnology , inorganic chemistry , chemistry , medicine , paleontology , sediment , biology , biochemistry , alternative medicine , organic chemistry , pathology , engineering
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 mg Pt −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.