Composite materials of Li2ZrO3 coated LiNi0.8Co0.1Mn0.1O2 and its electrochemical properties

SONG Liubin; LIU Jiao; XIAO Zhongliang; LI Lingjun; CAO Zhong; HU Chaoming; LI Xinyu; TANG Fuli

doi:10.11949/j.issn.0438-1157.20170536

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Composite materials of Li₂ZrO₃ coated LiNi_0.8Co_0.1Mn_0.1O₂ and its electrochemical properties

更新时间：2025-12-10

- Composite materials of Li₂ZrO₃ coated LiNi_0.8Co_0.1Mn_0.1O₂ and its electrochemical properties
- CIESC Journal Issue 11, Pages: 4390-4397(2017)
- 作者机构：
  
  1. 长沙理工大学化学与生物工程学院, 电力与交通材料保护湖南省重点实验室,湖南,长沙,410114
  2. 长沙理工大学材料科学与工程学院,湖南,长沙,410114
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170536
  CLC： M912.9
- Online First：05 November 2017，
  
  Published：05 November 2017
- 稿件说明：
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SONG Liubin, LIU Jiao, XIAO Zhongliang, et al. Composite materials of Li₂ZrO₃ coated LiNi_0.8Co_0.1Mn_0.1O₂ and its electrochemical properties[J]. CIESC Journal, 2017, (11): 4390-4397. DOI: 10.11949/j.issn.0438-1157.20170536.
DOI：

SONG Liubin, LIU Jiao, XIAO Zhongliang, et al. Composite materials of Li₂ZrO₃ coated LiNi_0.8Co_0.1Mn_0.1O₂ and its electrochemical properties[J]. CIESC Journal, 2017, (11): 4390-4397. DOI: 10.11949/j.issn.0438-1157.20170536. DOI：

摘要

以Zr（NO3）4·5H2O和CH3COOLi·2H2O为原料，采用湿化学法，将Li2ZrO3包覆在LiNi0.8Co0.1Mn0.1O2锂离子电池正极材料的表面，研究Li2ZrO3不同包覆比例对LiNi0.8Co0.1Mn0.1O2电化学性能的影响。SEM、TEM、EDS谱图分析表明，Li2ZrO3层均匀地包覆在LiNi0.8Co0.1Mn0.1O2表面，其厚度约为8 nm。与纯相相比，1%（质量分数） Li2ZrO3包覆的LiNi0.8Co0.1Mn0.1O2复合材料在1.0 C下首次放电比容量为184.7 mA·h·g-1、100次循环之后放电比容量为169.5 mA·h·g-1，其容量保持率达到91.77%，表现出良好的循环稳定性。循环伏安（CV）和电化学阻抗（EIS）测试结果表明，Li2ZrO3包覆层抑制了正极材料与电解液之间的副反应，减小了材料在循环过程中的电荷转移阻抗，从而提高了材料的电化学性能。

Abstract

Li2ZrO3 coated LiNi0.8Co0.1Mn0.1O2 cathode material for lithium ion battery was synthesized by a wet chemical method which using Zr(NO3)4·5H2O and CH3COOLi·2H2O as raw materials

and the influences of the different content of Li2ZrO3 on the electrochemical properties of LiNi0.8Co0.1Mn0.1O2 was studied. SEM

TEM and EDS spectra showed that Li2ZrO3 coating was uniformly coated on the surface of LiNi0.8Co0.1Mn0.1O2 with a thickness of about 8 nm. Compared with the pristine material

LiNi0.8Co0.1Mn0.1O2 coated with 1%(mass) Li2ZrO3 exhibited excellent cycle stability with 91.77% capacity retention rate after 100 cycles at 1.0 C(the first discharge capacity was 184.7 mA·h·g-1

and the specific capacity after 100 cycles was 169.5 mA·h·g-1). The results of cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) tests demonstrated that the Li2ZrO3 coating suppressed the side reaction between cathode material and electrolyte

and reduced the charge transfer resistance of the material during cycling

thus improved the electrochemical properties of the material.

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