储能科学与技术2016，Vol.5Issue(6)：833-839,7.DOI:10.12028/j.issn.2095-4239.2016.0019
中间相炭微球负极预嵌锂量对软包装锂离子电容器性能的影响
Effect of the pre-lithiation capacity of mesocarbon microbeads anode on the performances of a flexible packaging lithium ion capacitors
摘要
Abstract
Lithium ion capacitors (LIC) are fabricated in flexible packaging using activated carbon (AC) cathode and mesocarbon microbeads (MCMB) anode with mass ratio of 1∶1. We use constant-voltage pre-lithiation method and the capacity are 100 mA·h/g, 200 mA·h/g, and 300 mA·h/g, respectively. Rate capability and cycle life at high C-rates are evaluated at the potential range of 2.0—4.0 V. The results reveal that the capacitance of LIC monomer is between 4—5 F and the optimal electrochemical performance is obtained in the LIC with pre-lithiation capacity of 200 mA·h/g1. The first charge-discharge energy density is 83.7 W·h/kg (based on active material mass of two electrodes), the power density is 8835.4 W/kg and the energy density is 40.3 W·h/kg at 120 C rate. The cycle performance is tested at 20 C rate, the energy density retention is 91.5% after 500 cycles and 86.5%after 1000 cycles.关键词
锂离子电容器/软包装/活性炭/中间相炭微球/负极预嵌锂Key words
lithium ion capacitor/flexible package/activated carbon/mesocarbon microbead分类
信息技术与安全科学引用本文复制引用
张世佳,张熊,孙现众,赵菲菲,贾俊翔,马衍伟..中间相炭微球负极预嵌锂量对软包装锂离子电容器性能的影响[J].储能科学与技术,2016,5(6):833-839,7.基金项目
国家自然科学基金项目（51472238，51307167）。 （）
