Acta Phys. -Chim. Sin. ›› 2014, Vol. 30 ›› Issue (8): 1481-1486.doi: 10.3866/PKU.WHXB201405303

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Synthesis of Nanostructured LiNi1/3Co1/3Mn1/3O2 by Ammonia-Evaporation-Induced Synthesis and Its Electrochemical Properties as a Cathode Material for a High-Power Li-Ion Battery

HUA Wei-Bo1, ZHENG Zhuo1, LI Long-Yan1, GUO Xiao-Dong1, LIU Heng2, SHEN Chong-Heng3, WU Zhen-Guo1,3, ZHONG Ben-He1, HUANG Ling3   

  1. 1. Phosphorus Resources Comprehensive Utilization & Clean Processing Center of Ministry of Education, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China;
    2. School of Materials Science and Engineering, Sichuan University, Chengdu 610065, P. R. China;
    3. State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
  • Received:2014-04-23 Revised:2014-05-29 Published:2014-07-18
  • Contact: GUO Xiao-Dong E-mail:xiaodong2009@scu.edu.cn
  • Supported by:

    The project was supported by the Sichuan University Funds for Young Scientists, China (2011SCU11081) and Research Fund for the Doctoral Program of Higher Education, the Ministry of Education, China (20120181120103).

Abstract:

We report on an ammonia-evaporation-induced synthetic method for nanostructured LiNi1/3Co1/3Mn1/3O2 cathode material. Powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high- resolution transmission electron microscopy (HRTEM), energy- dispersive X- ray spectroscopy (EDS), Brunauer-Emmett-Teller nitrogen sorption, and galvanostatic charge-discharge tests were applied to analyze the crystal structure, micromorphology, and electrochemical properties of nanostructured LiNi1/3Co1/3Mn1/3O2. The results show that it has a well-ordered layered α-NaFeO2 with little cation mixing. Awalnutkernel- like morphology is formed by nanosheets, leading to a nanoporous material. The lateral plane of nanosheets are {010}-faceted, which could provide multiple channels for Li+-ion migration. The electrochemical properties of the lithium cells used this material as cathode are excellent: the specific discharge capacity at 0.5C,1C, 3C, 5C and 10C is, respectively, up to 172.90, 153.95, 147.09, 142.16, and 131.23 mAh·g-1 between 3.0 and 4.6 V at room temperature. These excellent features will make the nanostructured LiNi1/3Co1/3Mn1/3O2 become a positive electrode material of potential interest for useful applications, such as in electric vehicles and hybrid electric vehicles.

Key words: Lithium-ion battery, Cathode material, LiNi1/3Co1/3Mn1/3O2, Nanostructure, Ammonia-evaporation-induced synthetic method, Electrochemical property

MSC2000: 

  • O646