Shin, Ho Chul Cho, Won Il Jang, Ho 2024-01-21T02:30:50Z 2024-01-21T02:30:50Z 2021-09-01 2006-09-22 0378-7753 https://pubs.kist.re.kr/handle/201004/135110 In this study the effect of the carbon coating on the electrochemical properties of LiFePO4 as a cathode for Li-ion batteries were investigated. The carbon-coated LiFePO4 particles were synthesized by the mechanochemical process and one-step heat treatment. Microscopic observations using SEM and TEM revealed that the carbon coating reduced the particle size of the LiFePO4. The carbon-coated LiFePO4 showed much better performances in terms of the discharge capacity and cycle stability than bare LiFePO4. It was confirmed that the carbon coating decreased the migration distance of Li-ion and enhanced the charge transfer from CV and ac impedance measurements. The improved electrochemical properties of the carbon-coated LiFePO4 were, therefore, attributed to the reduced particle size and enhanced electrical contacts by carbon. (c) 2006 Elsevier B.V. All rights reserved. English ELSEVIER PHOSPHO-OLIVINES PERFORMANCE Electrochemical properties of the carbon-coated LiFePO4 as a cathode material for lithium-ion secondary batteries Article 10.1016/j.jpowsour.2005.12.043 1 JOURNAL OF POWER SOURCES, v.159, no.2, pp.1383 - 1388 JOURNAL OF POWER SOURCES 159 2 1383 1388 scie scopus 000240959500076 2-s2.0-33748172438 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article PHOSPHO-OLIVINES PERFORMANCE lithium iron phosphate carbon coating lithium-ion batteries ac impedance