Synthesis of Zirconium-Based Material-Coated LiNi0.8Co0.2O2 Cathode Using a New Coating Method

Cited 5 time in webofscience Cited 0 time in scopus
  • Hit : 430
  • Download : 0
Zr-compound-coated LiNi0.8Co0.2O2 is prepared in a single step using a new powder coating process, a modified flame spray pyrolysis method using a water-in-oil emulsion precursor solution. Only the Zr precursor is dissolved in the oil phase and the precursors of LiNi0.8Co0.2O2 are dissolved in the water phase. In a flame, precursors in the water phase transform into LiNi0.8Co0.2O2 core particles and the Zr precursor in the oil phase transforms into a coating layer on the LiNi0.8Co0.2O2 surface. After Zr compound coating, both the electrochemical performance and cycle stability are enhanced because the Zr compound coating layer prevents the oxidation of Ni3+ of LiNi0.8Co0.2O2 by acidic electrolyte. Since the Zr compound material is coated to prevent the Li2CO3 formation on the LiNi0.8Co0.2O2 surface, the effectiveness of the Zr compound coating in preventing Li2CO3 formation is investigated. After the as-prepared Zr-compound-coated LiNi0.8Co0.2O2 particles and bare LiNi0.8Co0.2O2 particles were exposed in an air for a month, the changes in morphologies and structures before and after aging were observed by using thermal gravimetric analysis (TGA), scanning electron microscopy (SEM) and X-ray diffraction (XRD). It is confirmed that Zr compound coating effectively reduces the amount of Li2CO3 formation. (C) 2012 The Japan Society of Applied Physics
Publisher
JAPAN SOC APPLIED PHYSICS
Issue Date
2012-10
Language
English
Article Type
Article
Keywords

LITHIUM-ION BATTERIES; SPRAY-PYROLYSIS; SURFACE MODIFICATION; PARTICLES; ELECTRODES; CO2; DEINTERCALATION; MORPHOLOGY; STABILITY; POWDERS

Citation

JAPANESE JOURNAL OF APPLIED PHYSICS, v.51, no.10

ISSN
0021-4922
DOI
10.1143/JJAP.51.105202
URI
http://hdl.handle.net/10203/104297
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 5 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0