Hung Tai-Feng, Hsieh Tzu-Hsien, Tseng Feng-Shun, Wang Lu-Yu, Yang Chang-Chung, Yang Chun-Chen
Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan.
Green Technology Research Institute, CPC Corporation, 2 Zuonan Rd., Nan-Tsu Dist., Kaohsiung 81126, Taiwan.
Nanomaterials (Basel). 2021 Mar 19;11(3):785. doi: 10.3390/nano11030785.
Rational design and development of the electrodes with high-mass loading yet maintaining the excellent electrochemical properties are significant for a variety of electrochemical energy storage applications. In comparison with the slurry-casted electrode, herein, a hierarchically porous activated carbon (HPAC) electrode with higher mass loading (8.3 ± 0.2 mg/cm) is successfully prepared. The pouch-type symmetric device (1 cell) with the propylene carbonate-based electrolyte shows the rate capability (7.1 F at 1 mA/cm and 4.8 F at 10 mA/cm) and the cycling stability (83% at 12,000 cycles). On the other hand, an initial discharge capacitance of 32.4 F and the capacitance retention of 96% after 30,000 cycles are delivered from a pouch-type symmetric supercapacitor (five cells). The corresponding electrochemical performances are attributed to the fascinating properties of the HPAC and the synergistic features of the resulting electrode.
合理设计和开发具有高质量负载且能保持优异电化学性能的电极，对于各种电化学储能应用具有重要意义。与浆料浇铸电极相比，本文成功制备了具有更高质量负载（8.3±0.2mg/cm）的分级多孔活性炭（HPAC）电极。采用碳酸丙烯酯基电解质的软包型对称器件（单电池）显示出倍率性能（1mA/cm时为7.1F，10mA/cm时为4.8F）和循环稳定性（12000次循环后为83%）。另一方面，一个软包型对称超级电容器（五个电池）的初始放电电容为32.4F，30000次循环后的电容保持率为96%。相应的电化学性能归因于HPAC的迷人特性以及所得电极的协同特性。
