Catalysis

Lithium Ion Battery Materials as Tunable, Redox Non-Innocent Catalyst Supports

Abstract

The development of general strategies for the electronic tuning of a catalyst’s active site is an ongoing challenge in heterogeneous catalysis. To this end we report the application of cathode and anode materials as redox non-innocent catalyst supports that can be continuously modulated as a function of lithium intercalation. A zero valent nickel complex was oxidatively grafted onto the surface of lithium manganese oxide (LixMn2O4) to yield single-sites of Ni2­+ (Ni/LixMn2O4). Its activity for olefin hydrogenation was found to be a function of the redox state of the support material, with the most lithiated variant showing the most activity. X-ray absorption, X-ray photoelectron, solid-state nuclear magnetic resonance and electron paramagnetic resonance spectroscopies, and electron microscopy techniques established the nature of the nickel species on LixMn2O4. Catalyst control through support redox non-innocence was extended to an organotantalum complex on lithium titanium oxide (LixTiO2), demonstrating the generality of this phenomenon.

Content

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Supplementary material

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FINAL CathodeSupportManuscript SI 20210209
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