Comparison of activated carbons prepared by one-step and two-step chemical activation process based on cotton stalk for supercapacitors application
Abstrak
Abstract Cotton stalk (CS) was successively treated via one-step and two-step activation process to synthesize activated carbons (ACs), which were utilized for electrode substances in the supercapacitors. The results showed that the activated carbon generated via one-step activation process at 600 °C demonstrate excellent specific surface area (1342.93 m2/g), which accompanied with high proportion of mesopores pore volume (97%) than those from two-step activation process. Moreover, a large specific capacitance of 338 F/g was observed in the AC that generated at the activated temperature of 600 °C via one-step activation process. The biomass-derived ACs presented an overall better electrochemistry characteristic than those from biochar-derived ACs, suggesting that the electrochemical performances of activated carbon generated from biomass-derived were better than those from biochar-derived. The data proved that the as-prepared ACs are promising materials for advanced energy storage, which is beneficial for value-added and industrial supercapacitors application of cotton stalk activated carbons.
Topik & Kata Kunci
Penulis (6)
J. Cheng
Shengjun Hu
Guotao Sun
Kang Kang
Mingqiang Zhu
Z. Geng
Akses Cepat
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Cek di sumber asli →- Tahun Terbit
- 2021
- Bahasa
- en
- Total Sitasi
- 132×
- Sumber Database
- Semantic Scholar
- DOI
- 10.1016/j.energy.2020.119144
- Akses
- Open Access ✓