Preformed Boehmite Nanoparticles As Coating Materials for Long-Cycling LiCoO2
作者： G.T.K. Fey , Z.X. Weng , J.G. Chen , C.Z. Lu , T.P. Kumar
DOI: 10.1023/B:JACH.0000031103.26202.F4
关键词:
摘要: A simple mechano-thermal coating procedure for the production of long-cycling LiCoO2 is described. Preformed nanoparticulate boehmite was used as material. The resulted in cathode particles covered a 20-30 nm thick kernel boehmite, revealed by TEM examination. XRD studies showed that lattice parameter c diminished upon coating, indicating substitutional compound composition LixAlyCo1−yO2 may have formed calcination. SEM images, R-factor values from and galvanostatic charge-discharge level 1.0 wt % gave an optimal performance capacity cyclability. images above level, excess adhered to coated sperules. ESCA depth profile analysis partial diffusion aluminum surface interior. Galvanostatic cycling at %, cyclability improved three- twelve-fold two commercial samples tested. Cyclic voltammetry hexagonal-monoclinic-hexagonal phase transformations during were suppressed materials.
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sci-hub.se 参考文章(27)
H Lawrence, Van Vlack, Physical ceramics for engineers Addison-Wesley Pub. Co.. ,(1964)
Young‐Il Jang, Biying Huang, Haifeng Wang, Donald R. Sadoway, Gerbrand Ceder, Yet‐Ming Chiang, Hui Liu, Hirokazu Tamura, LiAl y Co1 − y O 2 ( R 3̄m ) Intercalation Cathode for Rechargeable Lithium Batteries Journal of The Electrochemical Society. ,vol. 146, pp. 862- 868 ,(1999) , 10.1149/1.1391693
G. Ceder, Y.-M. Chiang, D. R. Sadoway, M. K. Aydinol, Y.-I. Jang, B. Huang, Identification of cathode materials for lithium batteries guided by first-principles calculations Nature. ,vol. 392, pp. 694- 696 ,(1998) , 10.1038/33647
Tsutomu Ohzuku, Atsushi Ueda, Solid‐State Redox Reactions of LiCoO2 (R3̅m) for 4 Volt Secondary Lithium Cells Journal of The Electrochemical Society. ,vol. 141, pp. 2972- 2977 ,(1994) , 10.1149/1.2059267
Jean-Paul Parant, Roger Olazcuaga, Michel Devalette, Claude Fouassier, Paul Hagenmuller, Sur quelques nouvelles phases de formule NaxMnO2 (x ⩽ 1) Journal of Solid State Chemistry. ,vol. 3, pp. 1- 11 ,(1971) , 10.1016/0022-4596(71)90001-6
M. Mladenov, R. Stoyanova, E. Zhecheva, S. Vassilev, Effect of Mg doping and MgO-surface modification on the cycling stability of LiCoO2 electrodes Electrochemistry Communications. ,vol. 3, pp. 410- 416 ,(2001) , 10.1016/S1388-2481(01)00192-8
D Zhang, B.S Haran, A Durairajan, R.E White, Y Podrazhansky, B.N Popov, Studies on Capacity Fade of Lithium-Ion Batteries Journal of Power Sources. ,vol. 91, pp. 122- 129 ,(2000) , 10.1016/S0378-7753(00)00469-9
Ho-Jin Kweon, Sue Joo Kim, Dong Gon Park, Modification of LixNi1−yCoyO2 by applying a surface coating of MgO Journal of Power Sources. ,vol. 88, pp. 255- 261 ,(2000) , 10.1016/S0378-7753(00)00368-2
Jan N. Reimers, J. R. Dahn, Electrochemical and In Situ X‐Ray Diffraction Studies of Lithium Intercalation in Li x CoO2 Journal of The Electrochemical Society. ,vol. 139, pp. 2091- 2097 ,(1992) , 10.1149/1.2221184
Claude Fouassier, Guy Matejka, Jean-Maurice Reau, Paul Hagenmuller, Sur de nouveaux bronzes oxygénés de formule NaχCoO2 (χ1). Le système cobalt-oxygène-sodium Journal of Solid State Chemistry. ,vol. 6, pp. 532- 537 ,(1973) , 10.1016/S0022-4596(73)80011-8