Densely Functionalized Cyanographene Bypasses Aqueous Electrolytes and Synthetic Limitations Toward Seamless Graphene/beta-FeOOH Hybrids for Supercapacitors
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73600631" target="_blank" >RIV/61989592:15310/19:73600631 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/adfm.201906998" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/adfm.201906998</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adfm.201906998" target="_blank" >10.1002/adfm.201906998</a>
Alternative languages
Result language
angličtina
Original language name
Densely Functionalized Cyanographene Bypasses Aqueous Electrolytes and Synthetic Limitations Toward Seamless Graphene/beta-FeOOH Hybrids for Supercapacitors
Original language description
Supercapacitors are a promising energy storage technology owing to their unparalleled power and lifetime. However, to meet the continuously rising demands of energy storage, they must be equipped with higher energy densities. For this purpose, the seamless integration of metal oxides on carbon matrices, such as iron oxides/oxyhydroxides, has been pursued through hydrothermal, atomic layer and electro-deposition methods directly on current collectors. Nevertheless, such methods present limited compatibility with commercial paste-coating processes on the current collectors. Furthermore, iron oxides/oxyhydroxides lack conductivity and are hydrophilic, operating with low-voltage aqueous electrolytes, limiting their power and energy and requiring corrosion-resistant H2O current collectors. To mitigate these challenges, a seamless and paste-ready material is successfully developed through a 15 min wet-chemical method, via the coordination of ultrasmall beta-FeOOH (akaganeite) nanoparticles to the nitrile groups of a covalent graphene derivative. Endowed with graphene-like impedance response and very high wettability in organic electrolytes, combined high power and energy densities are obtained, with respect to the total mass of both electrode materials and current collectors, overcoming the identified challenges. This offers future prospects for the exploration of alternative molecular handles for improved interfaces and their application in different energy-storage chemistries.
Czech name
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Czech description
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Classification
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
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ADVANCED FUNCTIONAL MATERIALS
ISSN
1616-301X
e-ISSN
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Volume of the periodical
29
Issue of the periodical within the volume
51
Country of publishing house
DE - GERMANY
Number of pages
11
Pages from-to
"1906998-1"-"1906998-11"
UT code for WoS article
000516572400027
EID of the result in the Scopus database
2-s2.0-85074032935