Monolithic metal-based/porous carbon nanocomposites made from dissolved cellulose for use in electrochemical capacitor

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F24%3AA250385Y" target="_blank" >RIV/61988987:17310/24:A250385Y - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2950155524000016" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2950155524000016</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.greenca.2024.01.001" target="_blank" >10.1016/j.greenca.2024.01.001</a>

Result language

angličtina

Original language name

Monolithic metal-based/porous carbon nanocomposites made from dissolved cellulose for use in electrochemical capacitor

Original language description

Porous metal-based carbon nanocomposites, with a monolithic shape, were prepared by a one-pot synthesis fromdissolved cellulose and metallic salts using a simple, cheap, and environmentally friendly route. Their potentialperformances as electrochemical capacitors were tested with three metal precursors (M = Cu, Mn, and Fe) withtwo loadings and in an asymmetric cell for the Fe-based carbon material. Interestingly, here soluble metalprecursors were not deposited on a hard cellulose template but mixed in a precooled concentrated NaOH solution where cellulose was previously dissolved, allowing for a good dispersion of the metallic species. After afreezing step where concomitant cellulose regeneration and pore ice-templating phenomena took place, followedby a carbonization step, the mixture led to a porous carbon monolith embedding well-dispersed metal-basednanoparticles having a diameter below 20 nm and present as metallic, oxide, or carbide phase(s) according to theelement M. These materials were characterized by different physicochemical techniques and electrochemicaltests. Their performances as supercapacitors are discussed in light of the specific behaviour of the metal-basedphase and its influence on the carbon matrix properties such as mesopore formation and carbon graphitization.An asymmetric energy storage cell assembled with a Fe-based carbon electrode against a carbon xerogel electrode derived from a phenolic resin shows specific energy and power of 18.3 Wh kg−1 at 5 mA cm−2 and1.6 kW kg−1 at 25 mA cm−2, respectively

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10400 - Chemical sciences

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Green Carbon

ISSN

2950-1555

e-ISSN

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Volume of the periodical

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Issue of the periodical within the volume

1

Country of publishing house

CN - CHINA

Number of pages

9

Pages from-to

109-117

UT code for WoS article

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EID of the result in the Scopus database

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