Vacancy-enhanced oxygen redox and structural stability of spinel Li2Mn3O7−x

Author:

Yang Lu12,Liu Zepeng13,Li Shuwei13,Hu Zhiwei4,Kong Qingyu56,Shen Xi7,Liu Qi8ORCID,Zhu He8,Chen Jin-Ming9ORCID,Haw Shu-Chih9,Gao Yurui10,Yingying Wang7,Su Dong7ORCID,Wang Xuefeng27ORCID,Yu Richeng37,Wang Zhaoxiang123ORCID,Chen Liquan1

Affiliation:

1. Key Laboratory for Renewable Energy, Chinese Academy of Sciences, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China

2. College of Material Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China

3. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China

4. Max Planck Institute for Chemical Physics of Solids, Dresden, 01187, Germany

5. Synchrotron Soleil L’Orme des Merisiers St-Aubin Gif-sur-Yvette Cedex, 91192, France

6. School of Physical Science and Information Technology, Liaocheng University, Liaocheng, 252059, China

7. Laboratory for Advanced Materials and Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China

8. Department of Physics, City University of Hong Kong, Hong Kong 999077, China

9. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

10. Laboratory of Theoretical and Computational Nanoscience, CAS Key Laboratory for Nanosystem and Hierarchy Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing 100190, China

Abstract

Soft-chemistry prepared spinel [Li4/7Mn2/71/7]8a[Li4/7Mn10/7]16d[O4−x]32e (Li2Mn3O7−x) with both Li–O–□ and Li–O–Li configurations exhibits oxygen redox and low-strain features during cycling.

Funder

National Natural Science Foundation of China

Youth Innovation Promotion Association of the Chinese Academy of Sciences

Publisher

Royal Society of Chemistry (RSC)

Subject

Materials Chemistry,Metals and Alloys,Surfaces, Coatings and Films,General Chemistry,Ceramics and Composites,Electronic, Optical and Magnetic Materials,Catalysis

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