High-Mass Loading Hierarchically Porous Activated Carbon Electrode for Pouch-Type Supercapacitors with Propylene Carbonate-Based Electrolyte
Tai-Feng Hung,
Tzu-Hsien Hsieh,
Feng-Shun Tseng,
Lu-Yu Wang,
Chang-Chung Yang,
Chun-Chen Yang
Affiliations
Tai-Feng Hung
Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan
Tzu-Hsien Hsieh
Green Technology Research Institute, CPC Corporation, 2 Zuonan Rd., Nan-Tsu Dist., Kaohsiung 81126, Taiwan
Feng-Shun Tseng
Energy Storage Technology Division, Green Energy & Environment Research Laboratories, Industrial Technology Research Institute, 301 Gaofa 3rd Rd., Guiren Dist., Tainan 71150, Taiwan
Lu-Yu Wang
Energy Storage Technology Division, Green Energy & Environment Research Laboratories, Industrial Technology Research Institute, 301 Gaofa 3rd Rd., Guiren Dist., Tainan 71150, Taiwan
Chang-Chung Yang
Energy Storage Technology Division, Green Energy & Environment Research Laboratories, Industrial Technology Research Institute, 301 Gaofa 3rd Rd., Guiren Dist., Tainan 71150, Taiwan
Chun-Chen Yang
Battery Research Center of Green Energy, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist., New Taipei City 24301, Taiwan
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/cm2) 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/cm2 and 4.8 F at 10 mA/cm2) 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.
