P2–Na2/3Mg1/4Mn7/12Co1/6O2 cathode material based on oxygen redox activity with improved first-cycle voltage hysteresis
نویسندگان
چکیده
The recent report of P2–Na2/3Mg0.28Mn0.72O2 (P2-NMM) demonstrated the possibility utilizing oxygen redox couple in a layered oxide cathode without need for alkali ions or vacancies transition metal layer. In this work, we synthesis new P2-type compound, Na2/3Mg1/4Mn7/12Co1/6O2 (P2-NMMC), which exhibits reversible specific capacities as high 173 mAh g?1 and an improvement first cycle voltage hysteresis over P2-NMM. material was characterised using combination ex-situ operando techniques including X-ray diffraction (XRD), differential electrochemical mass spectrometry (DEMS) spectroscopy (XAS) to identify potential sources improvement.
منابع مشابه
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a Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA b John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA c Department of Materials Science and Engineering, UC Berkeley, Berkeley, CA 94720, USA d Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720...
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ژورنال
عنوان ژورنال: Journal of Power Sources
سال: 2021
ISSN: ['1873-2755', '0378-7753']
DOI: https://doi.org/10.1016/j.jpowsour.2021.230104