All-solid-state supercapacitors from natural lignin-based composite film by laser direct writing
- Sichuan Univ., Chengdu (China); Univ. of Tennessee, Knoxville, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Beijing Univ. of Technology (China)
- Sichuan Univ., Chengdu (China)
- Università di Catania (Italy)
- Univ. of Tennessee, Knoxville, TN (United States); Beijing Univ. of Technology (China)
Lignin as a renewable natural resource has been the aim of numerical interest in applications ranging from pitch to porous carbon material. In this work, a facile method is reported to transform lignin into porous conductive carbon structures and interdigitated circuits for supercapacitor devices using femtosecond laser direct writing. Comparative studies revealed that the laser irradiation induced tetrahedral amorphous carbon while only graphitic carbon was obtained through pyrolysis. At the same time, the composite membrane was easily prepared to further optimize the capacities by mixing functional materials (MoS2) into the lignin/polyacrylonitrile (PAN) composite polymers. A MoS2 decorated porous carbon network material could be fabricated through focused femtosecond pulsed laser irradiation of the corresponding composite membranes. The microstructure and spectroscopic features of these laser induced hybrid carbon materials have been deeply investigated. The supercapacitor based on lignin/PAN has high areal specific capacitances of 6.7 mF cm–2 (0.9 F cm–3) at 10 mV s–1. Moreover, doped microsupercapacitors with MoS2 demonstrated enhanced areal capacitances up to 16 mF cm–2 (2.2 F cm–3) and at 10 mV s–1, respectively. The relatively high areal capacitances indicate that the introduced method is potential for innovative manufacturing energy storage devices based on natural lignin.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE; National Natural Science Foundation of China (NSFC); China Scholarship Council; Beijing Municipal Natural Science Foundation
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1560420
- Journal Information:
- Applied Physics Letters, Vol. 115, Issue 8; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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