新材料与新技术

高电压正极材料镍锰酸锂的制备及性能研究

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  • 1.广西民族师范学院,化学与生物工程学院,崇左532200;
    2.武汉中极氢能源发展有限公司,武汉430071
邱诗铭(1983-),男,硕士,主要研究方向为新能源材料,E-mail:84323374@qq.com。

收稿日期: 2020-09-22

  修回日期: 2021-01-10

  网络出版日期: 2021-05-10

基金资助

广西高校中青年教师基础能力提升项目(2017KY0835);广西高校中青年教师基础能力提升项目(2019KY0772);广西民族师范学院2018年度科研项目(2018BS001)

Study on preparation and performance of LiNi0.5Mn1.5O4 high-voltage cathode material

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  • 1. College of Chemistry and Bioengineering,Guangxi Normal University for Nationalities, Chongzuo 532200;
    2. Wuhan Zhongji Hydrogen Energy Development Co.,Ltd., Wuhan 430071

Received date: 2020-09-22

  Revised date: 2021-01-10

  Online published: 2021-05-10

摘要

以镍、锰氧化物和碳酸锂为原料,采用高温固相法直接合成高电压正极材料镍锰酸锂LiNi0.5Mn1.5O4。主要考察了烧结温度、烧结时间和Li/M等因素对工艺的影响。结果表明:在烧结温度为800℃,烧结时间为15h,Li/M为0.53时,合成的镍锰酸锂材料的综合性能达到了最佳。在此合成条件下合成的镍锰酸锂材料的1C放电比容量为129.53mAh/g,50次循环后1C放电比容量为122.60mAh/g,50次循环容量保持率94.56%,证明电池的循环性能良好。

本文引用格式

邱诗铭, 黄莹莹, 胡伟, 蔡敏, 覃晓波, 邹文清, 刘石文 . 高电压正极材料镍锰酸锂的制备及性能研究[J]. 化工新型材料, 2021 , 49(3) : 108 -112 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.03.024

Abstract

Nickel,manganese oxide and lithium carbonate were used as raw materials to directly synthesize high-voltage lithium nickel manganese oxide(LiNi0.5Mn1.5O4) using high-temperature solid-phase method.The influence of factors such as sintering temperature,sintering time and Li/M on the process was mainly investigated.The results shown that when the sintering temperature was 800℃,the sintering time was 15h,and the Li/M was 0.53,the overall performance of the synthesized material reached the best.The test shown that the 1C discharge specific capacity of the material synthesized under this synthesis condition was 129.53mAh/g,the 1C discharge specific capacity after 50 cycles was 122.60mAh/g,and the capacity retention rate of 50 cycles was 94.56%,which proved the cycle performance of the battery was good.

参考文献

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