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Free-standing super...
Free-standing supercapacitors from kraft lignin nanofibers with remarkable volumetric energy density
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- Schlee, Philipp (författare)
- Queen Mary University of London, UK
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- Herou, Servann (författare)
- Queen Mary University of London, UK; Imperial College London, UK
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- Jervis, Rhodri (författare)
- University College London, UK
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- Shearing, Paul R (författare)
- University College London, UK
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- Brett, Dan J. L. (författare)
- University College London, UK
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- Baker, Darren (författare)
- RISE,Bioraffinaderi och energi
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- Hosseinaei, Omid (författare)
- RISE,Bioraffinaderi och energi
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- Tomani, Per (författare)
- RISE,Bioraffinaderi och energi
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- Murshed, Mangir M. (författare)
- University of Bremen, Germany; Imperial College London, UK
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- Li, Yaomin (författare)
- University College London, UK
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- Mostazo-Lopez, Maria Jose (författare)
- Universidad de Alicante, Spain
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- Cazorla-Amoros, Diegoa (författare)
- Universidad de Alicante, Spain
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- Sobrido, Ana Belen Jorge (författare)
- Queen Mary University of London, UK
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- Titirici, Maria-Magdalena (författare)
- Queen Mary University of London, UK; Imperial College London, UK
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(creator_code:org_t)
- Royal Society of Chemistry, 2019
- 2019
- Engelska.
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Ingår i: Chemical Science. - : Royal Society of Chemistry. - 2041-6539. ; 10:10, s. 2980-2988
- Relaterad länk:
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https://doi.org/10.1...
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https://ri.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We have discovered a very simple method to address the challenge associated with the low volumetric energy density of free-standing carbon nanofiber electrodes for supercapacitors by electrospinning Kraft lignin in the presence of an oxidizing salt (NaNO3) and subsequent carbonization in a reducing atmosphere. The presence of the oxidative salt decreases the diameter of the resulting carbon nanofibers doubling their packing density from 0.51 to 1.03 mg cm−2 and hence doubling the volumetric energy density. At the same time, the oxidative NaNO3 salt eletrospun and carbonized together with lignin dissolved in NaOH acts as a template to increase the microporosity, thus contributing to a good gravimetric energy density. By simply adjusting the process parameters (amount of oxidizing/reducing agent), the gravimetric and volumetric energy density of the resulting lignin free-standing carbon nanofiber electrodes can be carefully tailored to fit specific power to energy demands. The areal capacitance increased from 147 mF cm−2 in the absence of NaNO3 to 350 mF cm−2 with NaNO3 translating into a volumetric energy density increase from 949 μW h cm−3 without NaNO3 to 2245 μW h cm−3 with NaNO3. Meanwhile, the gravimetric capacitance also increased from 151 F g−1 without to 192 F g−1 with NaNO3.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- kraft lignin
- nanofibre
- supercapacitor
- volumetric energy density
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- ref (ämneskategori)
- art (ämneskategori)
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Schlee, Philipp
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Herou, Servann
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Jervis, Rhodri
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Shearing, Paul R
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Brett, Dan J. L.
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Baker, Darren
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visa fler...
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Hosseinaei, Omid
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Tomani, Per
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Murshed, Mangir ...
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Li, Yaomin
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Mostazo-Lopez, M ...
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Cazorla-Amoros, ...
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Sobrido, Ana Bel ...
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Titirici, Maria- ...
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