Facile synthesis and electrochemical properties of layered Li[Ni1/3Mn1/3Co1/3]O2 as cathode materials for lithium-ion batteries
A layered oxide Li[Ni1/3Mn1/3Co1/3]O2 was synthesized by an oxalate co-precipitation method. The morphology, structural and composition of the as-papered samples synthesized at different calcination temperatures were investigated. The results indicate that calcination temperature of the sample at 850°C can improve the integrity of structural significantly. The effect of calcination temperature varying from 750°C to 950°C on the electrochemical performance of Li[Ni1/3Mn1/3Co1/3]O2, cathode material of lithiumion batteries, has been investigated. The results show that Li[Ni1/3Mn1/3Co1/3]O2 calcined at 850°C possesses a higher capacity retention and better rate capability than other samples. The reversible capacity is up to 178.6 mA∙h∙g-1, and the discharge capacity still remains 176.3 mA∙h∙g-1 after 30 cycles. Moreover, our strategy provides a simple and highly versatile route in fabricating cathode materials for lithium-ion batteries.
KeywordsLi[Mn1/3Ni1/3Co1/3]O2 cathode material oxalate co-precipitation lithiumion battery
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This work was supported by the National Natural Science Foundation of China (Grant Nos. 51571065 and 51271061) and the Natural Science Foundation of Guangxi (Grant Nos. 2013GXNSFGA 019007 and 2014GXNSFAA118340).
- Lu Z H, Macneil D D, Dahn J R. Layered cathode materials Li [NixLi(1/3–2x/3)Mn(2/3–x/3)]O2 for lithium-ion batteries. Electrochemical and Solid-State Letters, 2001, 4(11): A191–A194Google Scholar
- Lu Z, Macneil D D, Dahn J R. Layered cathode materials Li [NixLi(1/3–2x/3)Mn(2/3–x/3)]O2 for lithium-ion batteries. Electrochemical and Solid-State Letters, 2004, 7(12): A503–A506Google Scholar
- Macneil D D, Lu Z H, Dahn J R. Structure and electrochemistry of Li[NixCo1–2xMnx]O2 (0<x<1/2). Electrochemical and Solid-State Letters, 2002, 149(10): A1332–A1336Google Scholar
- Gao Y, Yakovleva M V, Ebner W B. Novel Li[Li0.2Mn0.54-Ni0.13Co0.13]O2 compounds as cathode materials for safer lithiumion batteries. Electrochemical Society, 1998, 1(3): 117–119Google Scholar