Park Gyori, Kim Hyun-Suk, Lee Kyung Jin
Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea.
Department of Materials Science and Engineering, Chungnam National University, Daejeon 34134, Republic of Korea.
Nanomaterials (Basel). 2023 Jan 12;13(2):324. doi: 10.3390/nano13020324.
The increase in demand for energy storage devices, including portable electronic devices, electronic mobile devices, and energy storage systems, has led to substantial growth in the market for Li-ion batteries (LiB). However, the resulting environmental concerns from the waste of LiB and pollutants from the manufacturing process have attracted considerable attention. In particular, N-methylpyrrolidone, which is utilized during the manufacturing process for preparing cathode or anode slurries, is a toxic organic pollutant. Therefore, the dry-based process for electrodes is of special interest nowadays. Herein, we report the fabrication of a cathode by a mortar-based dry process using NCM811, a carbon conductor, and poly(tetrafluoroethylene)binder. The electrochemical performance of the cathode was compared in terms of the types of conductors: carbon nanotubes and carbon black. The electrodes with carbon nanotubes showed an ameliorated performance in terms of cycle testing, capacity retention, and mechanical properties.
包括便携式电子设备、电子移动设备和储能系统在内的储能设备需求的增加，导致了锂离子电池（LiB）市场的大幅增长。然而，锂离子电池废弃物以及制造过程中产生的污染物所引发的环境问题已引起了广泛关注。特别是，在制备阴极或阳极浆料的制造过程中使用的N-甲基吡咯烷酮是一种有毒有机污染物。因此，如今基于干法的电极制备工艺备受关注。在此，我们报告了一种使用NCM811、碳导体和聚四氟乙烯粘合剂，通过基于研钵的干法制备阴极的方法。根据导体类型（碳纳米管和炭黑）对阴极的电化学性能进行了比较。具有碳纳米管的电极在循环测试、容量保持率和机械性能方面表现出改善的性能。
