Synthesis and characterization of ultrafine LiNi0.8Co0.2O2 powders by a freeze-drying method - 文章详情页

作者：

Song, Shun-Lin (Song, Shun-Lin.) | Xi, Xiao-Li (Xi, Xiao-Li.) (学者：席晓丽) | Wang, Zhi-Hong (Wang, Zhi-Hong.) | Pi, Xiong (Pi, Xiong.) | Nie, Zuo-Ren (Nie, Zuo-Ren.) (学者：聂祚仁)

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摘要：

Layered　LiNi0.8Co0.2O2　powder,　cathode　material　of　lithium　ion　batteries,　was　successfully　synthesized　by　a　freeze-drying　method.　The　calcination　conditions　were　studied,　which　influence　the　material　structure,　morphology　and　characters.　The　thermal　reaction,　crystal　structure,　morphology　and　particle　size　distribution　of　the　freeze-dried　precursor　and　the　powders　heated　to　various　temperatures　for　5h　were　investigated　by　TG-DTA,　XRD.　FESEM　and　laser　particle　size　analyzer.　The　results　show　the　calcining　temperature　has　a　remarkable　effect　on　the　structure　and　characters　of　the　samples.　The　sample　LiNi0.8Co0.2O2　material　calcined　at　750°C　for　5h　has　the　nanosized　and　narrow　particle　size　distribution.　And.　the　ratio　of　the　(003)　to　(104)　peaks　for　the　sample　is　1.51.Lattice　parameters　showed　that　the　LiNi0.8Co0.2O2　samples　synthesized　by　the　method　in　the　present　investigation　have　potential　to　exhibit　good　electrochemical　performance　when　used　as　electrodes　in　lithium　ion　batteries.

关键词：

Calcination Characterization Crystal structure Differential thermal analysis Drying Electrochemical properties Electrodes Freezing Lithium compounds Particle size analysis Scanning electron microscopy Secondary batteries Synthesis (chemical) Thermogravimetric analysis X ray diffraction analysis

作者机构：

[ 1 ] [Song, Shun-Lin]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Xi, Xiao-Li]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Wang, Zhi-Hong]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Pi, Xiong]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China
[ 5 ] [Nie, Zuo-Ren]College of Materials Science and Engineering, Beijing University of Technology, Beijing 100022, China

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