Biomass-derived porous activated carbon nanofibers from Sapindus trifoliatus nut shells for high-performance symmetric supercapacitor applications

Abstract Green, sustainable and effective development technique to obtain high porous activated carbon biomass based is important to boosting supercapacitor performance with environmentally friendly effect as conversion system and energy storage devices. We reported porous activated carbon binder-free Scleria sumatrensis stem-based as electrode material high performance of symmetric supercapacitor. Precursor biomass of Scleria sumatrensis stem was converted into porous carbon through simple ZnCl2 impregnated with different concentration of 0.4M, 0.5M, 0.6M, and 0.7M at high-temperature phyrolysis. All samples confirmed good amorphous carbon with small amounts of oxidative compounds. In two-electrode system, the optimum sample of ACSS0.6 significantly boosting the specific capacitance as high as 142.62 F g−1 at scan rate of 1 mV s−1. Furthermore, the optimum energy density was found to be 19.80 Wh kg−1 at a maximum power density of 71.35 W kg−1 in 1 M H2SO4 aqueous electrolyte. These results confirm that the porous activated carbon binder-free Scleria sumatrensis stem-based through simple ZnCl2 impregnated as an electrode material to boosting the electrochemical behavior of supercapacitors.

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Nitrogen-doped hollow activated carbon nanofibers as high performance supercapacitor electrodes

Journal of Electroanalytical Chemistry ◽

10.1016/j.jelechem.2014.12.027 ◽

2015 ◽

Vol 739 ◽

pp. 84-88 ◽

Cited By ~ 37

Author(s):

Qiang Xu ◽

Xiaoliang Yu ◽

Qinghua Liang ◽

Yu Bai ◽

Zheng-Hong Huang ◽

...

Keyword(s):

Activated Carbon ◽

Carbon Nanofibers ◽

High Performance ◽

Nitrogen Doped ◽

Activated Carbon Nanofibers

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A High‐Performance Symmetric Supercapacitor from Porous Activated Carbon under Compression

Energy Technology ◽

10.1002/ente.202100068 ◽

2021 ◽

pp. 2100068

Author(s):

Wei Sun ◽

Yulin Zhang ◽

Fuqian Yang

Keyword(s):

Activated Carbon ◽

High Performance ◽

Symmetric Supercapacitor ◽

Porous Activated Carbon

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High-Mass Loading Hierarchically Porous Activated Carbon Electrode for Pouch-Type Supercapacitors with Propylene Carbonate-Based Electrolyte

Nanomaterials ◽

10.3390/nano11030785 ◽

2021 ◽

Vol 11 (3) ◽

pp. 785

Author(s):

Tai-Feng Hung ◽

Tzu-Hsien Hsieh ◽

Feng-Shun Tseng ◽

Lu-Yu Wang ◽

Chang-Chung Yang ◽

...

Keyword(s):

Activated Carbon ◽

Propylene Carbonate ◽

Rational Design ◽

Rate Capability ◽

High Mass ◽

Electrochemical Performances ◽

Mass Loading ◽

Hierarchically Porous ◽

Symmetric Supercapacitor ◽

Porous Activated Carbon

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.

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