Direct and continuous strain control of catalysts with tunable battery electrode materials

Haotian Wang¹, Shicheng Xu², Charlie Tsai^{3

4}, Yuzhang Li⁵, Chong Liu⁵, Jie Zhao⁵, Yayuan Liu⁵, Hongyuan Yuan⁶, Frank Abild-Pedersen⁴, Fritz B Prinz^{2

5}, Jens K Nørskov^{3

4}, Yi Cui^{7

8}

Affiliations

¹ Department of Applied Physics, Stanford University, Stanford, CA 93205, USA.
² Department of Mechanical Engineering, Stanford University, Stanford, CA 93205, USA.
³ SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
⁴ SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
⁵ Department of Material Science and Engineering, Stanford University, Stanford, CA 94305, USA.
⁶ Department of Physics, Stanford University, Stanford, CA 94305, USA.
⁷ Department of Material Science and Engineering, Stanford University, Stanford, CA 94305, USA. yicui@stanford.edu.
⁸ Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.

PMID: 27885028
DOI: 10.1126/science.aaf7680

Direct and continuous strain control of catalysts with tunable battery electrode materials

Haotian Wang et al. Science. 2016.

. 2016 Nov 25;354(6315):1031-1036.

doi: 10.1126/science.aaf7680.

Authors

Affiliations

¹ Department of Applied Physics, Stanford University, Stanford, CA 93205, USA.
² Department of Mechanical Engineering, Stanford University, Stanford, CA 93205, USA.
³ SUNCAT Center for Interface Science and Catalysis, Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
⁴ SUNCAT Center for Interface Science and Catalysis, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
⁵ Department of Material Science and Engineering, Stanford University, Stanford, CA 94305, USA.
⁶ Department of Physics, Stanford University, Stanford, CA 94305, USA.
⁷ Department of Material Science and Engineering, Stanford University, Stanford, CA 94305, USA. yicui@stanford.edu.
⁸ Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.

PMID: 27885028
DOI: 10.1126/science.aaf7680

Abstract

We report a method for using battery electrode materials to directly and continuously control the lattice strain of platinum (Pt) catalyst and thus tune its catalytic activity for the oxygen reduction reaction (ORR). Whereas the common approach of using metal overlayers introduces ligand effects in addition to strain, by electrochemically switching between the charging and discharging status of battery electrodes the change in volume can be precisely controlled to induce either compressive or tensile strain on supported catalysts. Lattice compression and tension induced by the lithium cobalt oxide substrate of ~5% were directly observed in individual Pt nanoparticles with aberration-corrected transmission electron microscopy. We observed 90% enhancement or 40% suppression in Pt ORR activity under compression or tension, respectively, which is consistent with theoretical predictions.

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Direct and continuous strain control of catalysts with tunable battery electrode materials

Affiliations

Direct and continuous strain control of catalysts with tunable battery electrode materials

Authors

Affiliations

Abstract

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LinkOut - more resources

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