安百俊,李杨,李进,石星宇,韩博.喷墨打印制备LFP/Mxene阴极锂电池及其电化学性能[J].稀有金属材料与工程,2022,51(8):2816~2821.[An Baijun,Li Yang,Li Jin,Shi Xingyu,Han Bo.Preparation of Water-based LFP/MXene Cathode for Lithium-Ion Battery by Inkjet Printing Method and Its Electrochemical Performance[J].Rare Metal Materials and Engineering,2022,51(8):2816~2821.]
喷墨打印制备LFP/Mxene阴极锂电池及其电化学性能
投稿时间:2021-07-13  修订日期:2022-07-20
中文关键词:  LFP/MXene  电化学性能  喷墨打印
基金项目:National Natural Science Foundation of China (No. 51962030)
中文摘要:
      制备了MXene含量2%、3%、4%、5%、6%(质量分数)的磷酸铁锂(LFP)/Ti3AlC2(MXene)复合材料并将其制备成墨水,通过喷墨打印方法得到锂离子阴极电池,并研究MXene含量对LFP电化学性能的影响。结果表明,随着MXene含量的增加,LFP/MXene 复合材料的电化学性能先升高后降低。以4%MXene的添加剂制备得到的LFP/MXene 复合材料电化学性能测试最佳,其电容量达到181.2 mAh·g-1,100次循环后其库仑效率为99.4%。MXene材料具有手风琴层状结构,使得磷酸铁锂的接触比增加,此外,MXene材料比石墨烯材料具有更多的官能团结构,有助于LFP的电化学性能改进。但如果MXene加入过多,MXene材料发生结块,会降低LFP/MXene 复合材料电化学性能。
Preparation of Water-based LFP/MXene Cathode for Lithium-Ion Battery by Inkjet Printing Method and Its Electrochemical Performance
英文关键词:LFP/MXene  electrochemical performance  inkjet printing
英文摘要:
      LiFePO4 (LFP)/Ti3AlC2(MXene) composites were prepared and then made into ink. Then LFP/MXene cathode was obtained by inkjet printing method. The effects of MXene content on the electrochemical performance of LFP were studied by adjusting the addition ratio of MXene to 2wt%, 3wt%, 4wt%, 5wt%, 6wt%. The results show that with the increase of MXene content, the electrochemical performance increases and then decreases. The optimal performance is obtained when the MXene addition ratio is 4wt%, at which the capacity increases to 181.2 mAh·g-1, and the Coulomb efficiency is 99.4% after 100 cycles. The reasons are that the MXene materials have an accordion layered structure so that the contact sites of lithium iron phosphate increases, and MXene materials have more functional group structure than graphene materials, which contributes to the electrochemical performance improvement of LFP. However, if excess MXene is added, agglomeration will occur which will affect its electrochemical performance.
作者单位E-mail
安百俊 宁夏大学宁夏光伏材料重点实验室 baianne@126.com 
李杨 宁夏大学宁夏光伏材料重点实验室  
李进 宁夏大学宁夏光伏材料重点实验室  
石星宇 宁夏大学宁夏光伏材料重点实验室  
韩博 宁夏大学宁夏光伏材料重点实验室  
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