摘要
采用气泡式喷墨打印技术制备LiCo_(0.7)Ni_(0.3)O_(2)超薄电极,确定制备稳定LiCo_(0.7)Ni_(0.3)O_(2)分散体系的最佳工艺条件为:体系pH值为8,粘合剂CMCS含量为1%,分散剂AES-A含量为0.5%,超声波分散时间为10min。以LiCo_(0.7)Ni_(0.3)O_(2)超薄电极为正极、金属锂片为负极,组装成扣式电池,其电化学性能测试结果显示:打印5层和10层的LiCo_(0.7)Ni_(0.3)O_(2)超薄电极在电位区间3.2~4.2V、电流密度3μA/cm^(2)下,首次放电比容量分别为147mAh/g和144mAh/g;打印5层的LiCo_(0.7)Ni_(0.3)O_(2)超薄电极充放电循环100次后放电比容量保持在98%以上;LiCo_(0.7)Ni_(0.3)O_(2)超薄电极具有优良的充放电循环性能。
Ultra-thin LiCo_(0.7)Ni_(0.3)O_(2)electrode was prepared by bubble ink jet printing.The optimal conditions for preparing stable LiCo_(0.7)Ni_(0.3)O_(2)dispersion system were as follows:p H=8,CMCS content of adhesive 1%,AES-A content of 0.5%,ultrasonic dispersion time 10min.The buckle battery was assembled with LiCo_(0.7)Ni_(0.3)O_(2)ultra-thin electrode as the posi-tive electrode and lithium metal sheet as the negative electrode.The test results of electro-chemical performance were as follows:The initial discharge specific capacities of LiCo_(0.7)Ni_(0.3)O_(2)ultra-thin electrodes with 5 and 10 layers were 147mAh/g and 144mAh/g,re-spectively,at the potential range of 3.2~4.2V and the current density of 3μA/cm2.The dis-charge specific capacities remained above 98%after 100 charge-discharge cycles.So the thin LiCo_(0.7)Ni_(0.3)O_(2)electrode has excellent charge-discharge cycle performance.
作者
高虹
李学田
GAO Hong;LI Xuetian(Shenyang Ligong University,Shenyang 110159,China;Liaoning Province Special Reserve Power Supply Technical Innovation Center,Shenyang 110159,China)
出处
《沈阳理工大学学报》
CAS
2022年第4期42-48,共7页
Journal of Shenyang Ligong University
基金
辽宁省博士科研启动基金计划项目(2020-BS-154)。
关键词
喷墨打印技术
超薄电极
镍钴酸锂
超声波分散
inkjet printing technology
ultra-thin electrode
LiCo_(0.7)Ni_(0.3)O_(2)
ultrasonic disper-sion
