@article{642a93b0cba944fe87e10986b7acb4f2,
title = "Effect of Oxygen Hole in Li2MnO3 Revealed by Hard X-ray Photoemission Spectroscopy and Band Structure Calculations",
abstract = "We have studied the electronic structure of Li2MnO3 which has been attracting interest as a promising oxygen redox type cathode material for Li ion battery. Hard x-ray photoemission spectroscopy and subsequent cluster model analysis show that the Mn valence is 4+ and that the charge transfer energy Δ is close to 0 eV. Δ of Li2MnO3 is smaller than the typical Δ values of tetravalent Mn oxides. The small Δ value suggests that the delithiation process of Li2MnO3 is dominated by electron removal from the O 2p orbitals. In addition to the ground state properties of Li2MnO3, effect of Li or oxygen vacancy on the electronic structure is examined by means of band structure calculations. The Li vacancy drives the system metallic due to itinerant O 2p holes while the system with oxygen vacancy remains an insulator.",
author = "Keisuke Morita and Mitoki Itoda and Eiji Hosono and Daisuke Asakura and Masashi Okubo and Yasumasa Takagi and Akira Yasui and Saini, {Naurang L.} and Takashi Mizokawa",
note = "Funding Information: This work was supported by CREST-JST (Grant No. JPMJCR15Q2) and KAKENHI from JSPS (Grants No. JP19H01853). The synchrotron radiation experiment was performed with the approval of SPring-8 (2019B1574). This work was supported by joint research program of ZAIKEN, Waseda University (Project No. 31010). Funding Information: Acknowledgements This work was supported by CREST-JST (Grant No. JPMJCR15Q2) and KAKENHI from JSPS (Grants No. JP19H01853). The synchrotron radiation experiment was performed with the approval of SPring-8 (2019B1574). This work was supported by joint research program of ZAIKEN, Waseda University (Project No. 31010). Publisher Copyright: {\textcopyright} 2023 The Physical Society of Japan.",
year = "2023",
month = jan,
day = "15",
doi = "10.7566/JPSJ.92.014702",
language = "English",
volume = "92",
journal = "journal of the physical society of japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "1",
}