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Spectroscopic Signature of Oxidized Oxygen States in Peroxides.
Zhuo, Zengqing; Pemmaraju, Chaitanya Das; Vinson, John; Jia, Chunjing; Moritz, Brian; Lee, Ilkyu; Sallies, Shawn; Li, Qinghao; Wu, Jinpeng; Dai, Kehua; Chuang, Yi-de; Hussain, Zahid; Pan, Feng; Devereaux, Thomas P; Yang, Wanli.
Afiliación
  • Zhuo Z; School of Advanced Materials, Shenzhen Graduate School , Peking University , Shenzhen 518055 , People's Republic of China.
  • Pemmaraju CD; Advanced Light Source , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley California 94720 , United States.
  • Vinson J; Stanford Institute for Materials and Energy Sciences , Stanford University and SLAC National Accelerator Laboratory , Menlo Park , California 94025 , United States.
  • Jia C; Material Measurement Laboratory , National Institute of Standards and Technology , Gaithersburg , Maryland 20899 , United States.
  • Moritz B; Stanford Institute for Materials and Energy Sciences , Stanford University and SLAC National Accelerator Laboratory , Menlo Park , California 94025 , United States.
  • Lee I; Stanford Institute for Materials and Energy Sciences , Stanford University and SLAC National Accelerator Laboratory , Menlo Park , California 94025 , United States.
  • Sallies S; Stanford Institute for Materials and Energy Sciences , Stanford University and SLAC National Accelerator Laboratory , Menlo Park , California 94025 , United States.
  • Li Q; Advanced Light Source , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley California 94720 , United States.
  • Wu J; Advanced Light Source , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley California 94720 , United States.
  • Dai K; Advanced Light Source , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley California 94720 , United States.
  • Chuang YD; Advanced Light Source , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley California 94720 , United States.
  • Hussain Z; Advanced Light Source , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley California 94720 , United States.
  • Pan F; Advanced Light Source , Lawrence Berkeley National Laboratory , 1 Cyclotron Road , Berkeley California 94720 , United States.
  • Devereaux TP; School of Advanced Materials, Shenzhen Graduate School , Peking University , Shenzhen 518055 , People's Republic of China.
  • Yang W; Stanford Institute for Materials and Energy Sciences , Stanford University and SLAC National Accelerator Laboratory , Menlo Park , California 94025 , United States.
J Phys Chem Lett ; 9(21): 6378-6384, 2018 Nov 01.
Article en En | MEDLINE | ID: mdl-30354171
Recent debates on the oxygen redox behaviors in battery electrodes have triggered a pressing demand for the reliable detection and understanding of nondivalent oxygen states beyond conventional absorption spectroscopy. Here, enabled by high-efficiency mapping of resonant inelastic X-ray scattering (mRIXS) coupled with first-principles calculations, we report distinct mRIXS features of the oxygen states in Li2O, Li2CO3, and especially, Li2O2, which are successfully reproduced and interpreted theoretically. mRIXS signals are dominated by valence-band decays in Li2O and Li2CO3. However, the oxidized oxygen in Li2O2 leads to partially unoccupied O-2p states that yield a specific intraband excitonic feature in mRIXS. Such a feature displays a specific emission energy in mRIXS, which disentangles the oxidized oxygen states from the dominating transition-metal/oxygen hybridization features in absorption spectroscopy, thus providing critical hints for both detecting and understanding the oxygen redox reactions in transition-metal oxide based battery materials.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Phys Chem Lett Año: 2018 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
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XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Phys Chem Lett Año: 2018 Tipo del documento: Article Pais de publicación: Estados Unidos