Tyler J Landon, Sacci Robert L, Ning Jinliang, Mullins David R, Liang Kun, Nanda Jagjit, Sun Jianwei, Naguib Michael
Chemical Sciences Division, Oak Ridge National Laboratory Oak Ridge Tennessee 37831 USA.
Department of Physics and Engineering Physics, Tulane University New Orleans LA 70118 USA
RSC Adv. 2021 Jun 2;11(32):19885-19889. doi: 10.1039/d1ra00956g. eCollection 2021 May 27.
Herein we report on using Egyptian blue as an anode material for Li-ion batteries. A 1 cycle lithiation capacity of 594 mA h g and reversible capacity of 210 mA h g at 20 mA g, and at 500 mA g a reversible capacity of 120 mA h g (stable over 1000 cycles) were achieved with coulombic efficiency more than 99.5%. Using X-ray diffraction, and FTIR and X-ray absorption spectroscopies we found that the material goes through a conversion reaction during the 1 cycle that results in the formation of amorphous mixed oxides with copper nanoclusters.
在此，我们报道了将埃及蓝用作锂离子电池的阳极材料。在20 mA/g的电流密度下，首次循环锂化容量为594 mA h/g，可逆容量为210 mA h/g；在500 mA/g的电流密度下，可逆容量为120 mA h/g（在1000次循环中保持稳定），库仑效率超过99.5%。通过X射线衍射、傅里叶变换红外光谱和X射线吸收光谱，我们发现该材料在首次循环中经历了一个转化反应，生成了含有铜纳米团簇的非晶态混合氧化物。
