Nitrogen, oxygen and sulfur co-doped hierarchical porous carbons toward high-performance supercapacitors by direct pyrolysis of kraft lignin
By Fangyan Liu, Zixing Wang, Haitao Zhang, Long Jin, Xiang Chu, Bingni Gu, Haichao Huang, Weiqing Yang. Carbon, 2019
318 citations recorded by the source corpus.
Abstract The O-N-S co-doped hierarchical porous carbons are prepared by direct pyrolysis of kraft lignin which is the byproduct from papermaking black liquor. The proposed preparation method is extremely facile, green-environmental, and low-cost without any additional activating agents, additives or templates. The kraft lignin-derived carbon materials possess large specific surface areas (338−1307 m2 g−1), hierarchical porous structures and abundant multi-heteroatoms co-doping (9.84–19.91 wt%). Benefiting from above synergistic advantages, the as-fabricated symmetric supercapacitor in aqueous electrolyte delivers a high specific capacitance of 244.5 F g−1 at 0.2 A g−1, excellent rate-capability (81.8% retention of initial capacitance at 40.0 A g−1), and outstanding cycling stability (91.6% retention over 10000 cycles). Importantly, this device in aqueous electrolyte delivers an energy density of 8.5 W h kg−1 at a power density of 100 W kg−1. Furthermore, a remarkable energy density of 66.8 W h kg−1 at a power density of 1.75 kW kg−1 has been achieved and 32.2 W h kg−1 is still maintained even at an ultrahigh power density of 40.0 kW kg−1 when ionic liquid serves as electrolyte. This study demonstrates the successful conversion of low-valued natural biomass derivative into sustainable high-performance supercapacitor electrode materials with a simple, low-cost, and green-environmental production process.
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/7a12e485ad9313c9a8284fb0fa66a2d336f3e081
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Citations in the corpus
- Heteroatom doped high porosity carbon nanomaterials as electrodes for energy storage in electrochemical capacitors: A review (2019, unknown): “Hierarchical carbon O,N&S 1307 245 9 100 [154]”
- A critical review on biochar-based engineered hierarchical porous carbon for capacitive charge storage (2021, methodology): “Hence 730 the biochar-based HPC and EHPC are essential to bridge the gap between conventional 731 electrochemical capacitors and rechargeable batteries to meet the increasing energy 732 demand.”