Macroporous nitrogen-containing carbon for electrochemical capacitors

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F22%3A00556692" target="_blank" >RIV/61389013:_____/22:00556692 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0013468622005321?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0013468622005321?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.electacta.2022.140370" target="_blank" >10.1016/j.electacta.2022.140370</a>

Result language
angličtina
Original language name
Macroporous nitrogen-containing carbon for electrochemical capacitors
Original language description
Polypyrrole-gelatin aerogels were synthesized by a one-step cryopolymerization approach and carbonized at various temperatures (100–700 °C). The mechanical integrity and macroporous morphology (pore size 4–16 µm) of materials carbonized at all studied temperatures were preserved after carbonization. Raman and X-ray photoelectron spectroscopies confirmed the aerogel conversion to carbon with gradually enhanced structural order at higher temperatures (300–600 °C). Change of the material conductivity with carbonization temperature follows the evolution of its molecular structure, reaching 2 × 10–5 S cm–1 for a fully carbonized aerogel (700 °C). Specific surface area and total pore volume values for the carbonized material were ⁓one order of magnitude higher (441.7 m2 g–1 and 0.21 cm3 g–1 at 600 °C, respectively) compared to the ones of the precursor. Cyclic voltammetry measurements showed that gravimetric capacitance of the products increased at higher carbonization temperatures up to 209 F g–1 (700 °C) and was stable for at least 1000 cycles. Galvanostatic charge-discharge method showed the highest capacitance 273 F g–1 (1 M HCl). The prepared nitrogen-containing carbon materials can be potentially used for supercapacitor applications.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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