负极预嵌锂对锂离子电容器性能的影响

Impact of the Pre-inserted Lithium Ion in Negative Electrode for Lithium Ion Capacitors

摘要:

采用SLMP(stabilized lithium metal powder）研究预嵌锂过程对锂离子电容器性能的影响.通过高倍率光学显微镜研究加入电解液后预嵌锂负极的变化；通过对比不同嵌锂含量对半电池与全电池性能的影响，分析得出含量对锂离子超级电容器的容量、能量密度和功率密度的影响，发现超稳态锂粉的质量分数在14%左右时，锂离子电容器可以获得较好的性能.

关键词:锂离子; 超级电容器; 预嵌锂; 能量密度

Abstract:

The impacts of the Stabilized Lithium Metal Powder on the whole system of lithium ion capacitor have been discussed in this paperwork. The optical microscope was involved to observe and analyze the changes of preinserted lithium negative electrode after adding electrolyte. Half cells and full cells with different preinserted lithium negative electrode were compared to analyze the effects of preinserted lithium process on the capacity and power density of lithium ion capacitors. As a result, capacitor with 14% SLMP have comparatively superior properties than the others.

Key words:lithium-ion; supercapacitor; pre-inserted lithium; energy density