caa a22 4500 463226682 CHVBK 20180405153229.0 cr unu---uuuuu 170326e20070201xx s 000 0 eng 10.1007/s10853-006-1447-z doi (NATIONALLICENCE)springer-10.1007/s10853-006-1447-z Preparation and electrochemical characteristics of microemulsion-derived Li(Ni, Co)O2 nanopowders [Elektronische Daten] [Chung-Hsin Lu, Hsien-Cheng Wang] Nanosized LiNi0.9Co0.1O2 powders used in lithium-ion batteries are successfully prepared via a water-in-oil microemulsion process. The average particle sizes of the microemulsion-derived LiNi0.9Co0.1O2 powders are in nanometer scale. The obtained powders are much smaller in size than the specimens prepared via the conventional solid state and sol-gel processes. Oxygen has significant enhancement effects on the cationic ordering of the calcined powders. Highly cation-ordered LiNi0.9Co0.1O2 powders with a layered $$ R\bar 3m $$ structure are obtained after heat-treatment at 800°C in O2. In addition, the high intensity ratio of I 003/I 104 reveals that lithium ions and transition metal ions are regularly situated at the 3a and 3b sites, respectively, rendering the high cationic ordering. The discharge capacity of the first cycle for the specimen calcined at 800°C in O2 is 170.9mAh/g. After 20 cycles, the capacity retention of LiNi0.9Co0.1O2 powders is 93.2%, indicating that LiNi0.9Co0.1O2 powders with good cycling characteristics are obtained via the microemulsion process. Springer Science+Business Media, LLC, 2007 Lu Chung-Hsin Electronic and Electro-optical Ceramics Laboratory, Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C. aut Wang Hsien-Cheng Electronic and Electro-optical Ceramics Laboratory, Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C. aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/3(2007-02-01), 752-758 0022-2461 42:3<752 2007 42 10853 https://doi.org/10.1007/s10853-006-1447-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1447-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lu Chung-Hsin Electronic and Electro-optical Ceramics Laboratory, Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C aut NATIONALLICENCE 700 1- Wang Hsien-Cheng Electronic and Electro-optical Ceramics Laboratory, Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/3(2007-02-01), 752-758 0022-2461 42:3<752 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer