Preparation of Water-based LFP/MXene Cathode for Lithium-Ion Battery by Inkjet Printing Method and Its Electrochemical Performance
Preparation of Water-based LFP/MXene Cathode for Lithium-Ion Battery by Inkjet Printing Method and Its Electrochemical Performance
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发表时间：
2022
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通讯作者：
Han Bo
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作者：
An Baijun;Li Yang;Li Jin;Shi Xingyu;Han Bo
LiFePO_4(LFP)/Ti_3AlC2(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 2 wt%, 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 Coulombic 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.
