Lignin-based carbon fibers for renewable and multifunctional lithium-ion battery electrodes
PBN-AR
Instytucja
Wydział Chemiczny (Politechnika Gdańska)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
HOLZFORSCHUNG (45pkt w roku publikacji)
ISSN
0018-3830
EISSN
Wydawca
DOI
URL
Rok publikacji
2018
Numer zeszytu
2
Strony od-do
81-90
Numer tomu
72
Link do pełnego tekstu
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Autorzy
(liczba autorów: 8)
Pozostali autorzy
+ 7
Słowa kluczowe
LIGNIN-BASED CARBON FIBERS
LITHIUM-ION BATTERY
MELT-SPINNING
MULTIFUNCTIONAL
SOFTWOOD KRAFT LIGNIN
Streszczenia
Język
Treść
Lignin-based carbon fibers (LCFs) from the renewable resource softwood kraft lignin were synthesized via oxidative thermostabilization of pure melt-spun lignin and carbonization at different temperatures from 1000°C to 1700°C. The resulting LCFs were characterized by tensile testing, scanning electron microscopy (SEM), X-ray diffraction (XRD) and confocal Raman spectroscopy. The microstructure is mainly amorphous carbon with some nanocrystalline domains. The strength and stiffness are inversely proportional to the carbonization temperature, while the LCFs carbonized at 1000°C exhibit a strength of 628 MPa and a stiffness of 37 GPa. Furthermore, the application potential of LCFs was evaluated as negative electrodes in a lithium-ion battery (LIB) by electrochemical cycling at different current rates in a half-cell setup. The capacity drops with the carbonization temperature and the LCFs carbonized at 1000°C have a capacity of 335 mAh g−1. All LCFs showed good cycling stability. Because of the mechanical integrity and conductivity of the LCFs, there is no need to apply current collectors, conductive additives or binders. The advantage is an increased gravimetric energy density compared to graphite, which is the most common negative electrode material. LCFs show a promising multifunctional behavior, including good mechanical integrity, conductivity and an ability to intercalate lithium for LIBs.
Inne
System-identifier
142011
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