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Published April 22, 2015 | Version Supplemental Material
Journal Article Open

Mn_2V_2O_7: An Earth Abundant Light Absorber for Solar Water Splitting

Creators

  • 1. ROR icon Lawrence Berkeley National Laboratory
  • 2. ROR icon University of California, Berkeley
  • 3. ROR icon Joint Center for Artificial Photosynthesis
  • 4. ROR icon Kavli Energy NanoScience Institute

Abstract

Complex oxide β-Mn_2V_2O_7 is identified as exhibiting near-optimal band energetics for solar fuel applications among known metal oxides. Experiments, corroborated by theory, indicate a bandgap near 1.8 eV. The calculations predict that β-Mn_2V_2O_7 has well-aligned band edge energies for the hydrogen evolution reaction and oxygen evolution reaction. Photoelectrochemical measurements indicate appreciable photocurrent, corroborating the predictions.

Additional Information

© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Received: October 17, 2014; Revised: November 27, 2014; Published online: January 21, 2015. Computational work was supported by the Materials Project Predictive Modeling Center (EDCBEE) through the U.S. Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, under Contract No. DE-AC02–05CH11231. Experimental work was performed by the Joint Center for Artificial Photosynthesis, a DOE Energy Innovation Hub, supported through the Office of Science of the U.S. Department of Energy (Award No. DE-SC0004993). Work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02–05CH11231. Computational resources also provided by the Department of Energy through the National Energy Supercomputing Center. The authors thank Dan Guevarra and Aniketa Shinde for assistance with acquisition of the photocurrent data and Chengxiang Xiang, Slobodan Mitrovic and Joel Haber for helpful discussions.

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Additional details

Identifiers

Eprint ID
57643
DOI
10.1002/aenm.201401840
Resolver ID
CaltechAUTHORS:20150519-092604842

Related works

Describes
10.1002/aenm.201401840 (DOI)

Funding

Department of Energy (DOE)
DE-AC02–05CH11231

Dates

Created
2015-05-19
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Updated
2021-11-10
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