Preparation of spherical LiNi0.80Co0.15Mn0.05O2 lithium-ion cathode material by continuous co-precipitation

被引：62

作者：

Cheralathan, K. K. ^{[1
]}

Kang, Na Young ^{[1
]}

Park, Hun Su ^{[1
]}

Lee, You Jin ^{[1
]}

Choi, Won Choon ^{[1
]}

Ko, Young Soo ^{[2
]}

Park, Yong-Ki ^{[1
]}

机构：

[1] Korea Res Inst Chem Technol, Div Adv Chem Technol, Taejon 305343, South Korea

[2] Kongju Natl Univ, Dept Chem Engn, Gongju 314701, Cheungnam, South Korea

来源：

JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 05期

关键词：

Lithium battery; Cathode; Continuous co-precipitation; Capacity retention; ELECTROCHEMICAL PROPERTIES; THERMAL-STABILITY; ELECTRODE MATERIALS; BATTERIES; LICOO2; OXIDES; CELLS; MGO; LINI0.8CO0.2O2; SUBSTITUTION;

D O I：

10.1016/j.jpowsour.2009.08.101

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Micro-spherical Ni0.80Co0.15Mn0.05(OH)(2) precursors with a narrow size-distribution and high tap-density are prepared successfully by continuous co-precipitation of the corresponding metal salt solutions using NaOH and NH4OH as precipitation and complexing agents. LiNi0.80Co0.15Mn0.05O2 is then prepared as a lithium battery cathode from this precursor by the introduction of LiOH-H2O. The pH and NH3:metal molar ratio show significant effects on the morphology, microstructure and tap-density of the prepared Ni0.80Co0.15Mn0.05(OH)(2) and the R values and I(003)/I(104) ratio of lithiated LiNi0.80Co0.15Mn0.05O2. Spherical LiNi0.80Co0.15Mn0.05O2 prepared under optimum conditions reveals a hexagonally ordered, layered structure without cation mixing and an initial charging capacity of 176 mAhg(-1). More than 91% of the capacity is retained after 40 cycles at the 1 C rate in a cut-off voltage range of 4.3-3.0 V. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1486 / 1494

页数：9

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