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Mn 2 V 2 O 7 : An Earth Abundant Light Absorber for Solar Water Splitting
Author(s) -
Yan Qimin,
Li Guo,
Newhouse Paul F.,
Yu Jie,
Persson Kristin A.,
Gregoire John M.,
Neaton Jeffrey B.
Publication year - 2015
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201401840
Subject(s) - materials science , water splitting , photocurrent , band gap , oxide , oxygen evolution , hydrogen , metal , chemical physics , solar energy , energetics , optoelectronics , chemistry , physics , electrochemistry , thermodynamics , photocatalysis , electrode , biochemistry , quantum mechanics , metallurgy , catalysis , ecology , biology
Complex oxide β‐Mn 2 V 2 O 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 2 V 2 O 7 has well‐aligned band edge energies for the hydrogen evolution reaction and oxygen evolution reaction. Photoelectrochemical measurements indicate appreciable photocurrent, corroborating the predictions.