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ACS Appl Mater Interfaces. 2016 Jan 13;8(1):208-14. doi: 10.1021/acsami.5b08349. Epub 2015 Dec 24.

Fabrication and Performance of High Energy Li-Ion Battery Based on the Spherical Li[Li(0.2)Ni(0.16)Co(0.1)Mn(0.54)]O2 Cathode and Si Anode.

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Center of Energy Storage Materials and Technology, College of Engineering and Applied Sciences, National Laboratory of Solid State Microstructures, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University , Nanjing, Jiangsu 210093, China.
Soochow University , Center of Suzhou Nanoscience and Technology, College of Physics, Optoelectronics and Energy and Collaborative Innovation, Suzhou, Jiangsu 215006, China.
Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Umezono 1-1-1, Tsukuba, Ibaraki 305-8568, Japan.


The cathode materials of Li-ion batteries for electric vehicles require not only a large gravimetric capacity but also a high volumetric capacity. A new Li-rich layered oxide cathode with superior capacity, Li[Li0.20Ni0.16Co0.10Mn0.54]O2 (denoted as LNCM), is synthesized from precursor, a coprecipitated spherical metal hydroxide. The preparation technology of precursor such as stirring speed, concentration of metal solution, and reaction time are regulated elaborately. The final product LNCM shows a well-ordered, hexagonal-layer structure, as confirmed by Rietveld refinement of X-ray diffraction pattern. The particle size of the final product has an average diameter of about 10 μm, and the corresponding tap density is about 2.25 g cm(-3). Electrochemical measurements indicate that as-prepared LNCM has great initial columbic efficiency, reversible capacity, and cycling stability, with specific discharge capacities of 278 and 201 mAh g(-1) at 0.03 and 0.5 C rates, respectively. Cycling at 0.1 C, LNCM delivers a discharge capacity of 226 mAh g(-1) with 95% retention capacity after 50 cycles. Si/LNCM cell is fabricated using Si submicroparticle as anode against LNCM. The cell can exhibit a specific energy of 590 Wh kg(-1) based on the total weight of cathode and anode materials.


coprecipitation method; lithium-ion battery; lithium-rich layered oxide; silicon anode; spherical cathode


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