| 高电压正极材料镍锰酸锂的制备及性能研究 |
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| 引用本文： | 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(3):108-112. |
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| 作者姓名： | 邱诗铭 黄莹莹 胡伟 蔡敏 覃晓波 邹文清 刘石文 |
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| 作者单位： | 广西民族师范学院;武汉中极氢能源发展有限公司 |
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| 基金项目： | 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)。 |
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| 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。
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| 关 键 词： | 锂电池正极材料 镍锰酸锂 电化学性能 固相法 |
Study on preparation and performance of LiNi0.5Mn1.5O4 high-voltage cathode material |
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| Qiu Shiming,Huang Yingying,Hu Wei,Cai Min,Qin Xiaobo,Zhou Wenqing,Liu Shiwen.Study on preparation and performance of LiNi0.5Mn1.5O4 high-voltage cathode material[J].New Chemical Materials,2021(3):108-112. |
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| Authors: | Qiu Shiming Huang Yingying Hu Wei Cai Min Qin Xiaobo Zhou Wenqing Liu Shiwen |
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| Affiliation: | (College of Chemistry and Bioengineering,Guangxi Normal University for Nationalities,Chongzuo 532200;Wuhan Zhongji Hydrogen Energy Development Co.,Ltd.,Wuhan 430071) |
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| Abstract: | Nickel,manganese oxide and lithium carbonate were used as raw materials to directly synthesize highvoltage 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 15 h,and the Li/M was 0.53,the overall performance of the synthesized material reached the best.The test shown that the 1 Cdischarge specific capacity of the material synthesized under this synthesis condition was 129.53 mAh/g,the 1 Cdischarge specific capacity after 50 cycles was 122.60 mAh/g,and the capacity retention rate of 50 cycles was 94.56%,which proved the cycle performance of the battery was good. |
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| Keywords: | lithium-ion battery positive material LiNi0 5Mn1 5O4 electrochemical property solid phase method |
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