期刊
RSC ADVANCES
卷 6, 期 41, 页码 34245-34253出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra00769d
关键词
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资金
- Recruitment Program of Global Youth Experts
- National Natural Science Foundation of China [51304248]
- Program for New Century Excellent Talents in University [NCET-11-0525]
- Program for Shenghua Overseas Talents from Central South University (CSU)
- Project of Innovation-driven Plan in Central South University
- State Key Laboratory of Powder Metallurgy at Central South University
A novel heterostructured cathode material, comprised of a core of Li-rich layered (R (3) over barm) oxides integrated with Li+-conductive Li2SiO3 and an in situ formed spinel (Fd (3) over barm) nano-coating layer, has been successfully synthesized. The ionic conductor Li2SiO3 in the bulk facilitates the Li+ intercalation/deintercalation process and stabilizes the layered structure. This is coupled with the fast 3D Li+ diffusion channels of an electrochemically active spinel coating layer, leading to superior rate capability (94 mA h g(-1) at 10C) and excellent cycling stability in the heterostructured cathode material. This synergistic strategy may provide some new directions for synthesizing high-performance Li-ion battery cathode materials.
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