期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 6, 期 39, 页码 19107-19112出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta07782g
关键词
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资金
- National Natural Science Foundation of China [21501171, 51403209, 51677176, 51673199, 21406221]
- Chinese Academy of Sciences [FCLT201602]
- Youth Innovation Promotion Association of CAS [2015148]
- Youth Innovation Foundation of DICP [ZZBS201615]
- Dalian Science and Technology Star Program [2016RQ026]
- Key Laboratory of Functional Crystals and Laser Technology
- Technical Institute of Physics and Chemistry
Molybdate cathode materials have attracted a lot of attention due to their rich crystal structure, stable skeleton structure and moderate electronic conductivity. In this paper, a new NASICON-type material Li3Cr(MoO4)(3) has been studied for the first time as a cathode material for lithium ion batteries with high specific capacity. Comprehensive studies by X-ray diffraction, UV-vis-IR diffuse reflection, bond valence sum maps calculation, cyclic voltammetry, electrochemical impedance spectroscopy and the Four-Probe method show that Li3Cr(MoO4)(3) possesses a narrow band gap, high electronic conductivity and fast lithium ion transport channels, and delivers a high specific capacity (200 mA h g(-1)) and rate performance. Electrochemical mechanism studies indicate that both the Mo6+/5+ and Cr3+/Cr2+ reactions contribute to the high specific capacity.
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