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dc.contributor.author
Walter, Marc
dc.contributor.author
Kravchyk, Kostiantyn V.
dc.contributor.author
Böfer, Cornelia
dc.contributor.author
Widmer, Roland
dc.contributor.author
Kovalenko, Maksym V.
dc.date.accessioned
2018-04-30T11:08:58Z
dc.date.available
2018-04-27T02:58:43Z
dc.date.available
2018-04-30T11:08:58Z
dc.date.issued
2018-04-12
dc.identifier.issn
0935-9648
dc.identifier.issn
1521-4095
dc.identifier.other
10.1002/adma.201705644
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/260955
dc.identifier.doi
10.3929/ethz-b-000260955
dc.description.abstract
The pressing need for low‐cost and large‐scale stationary storage of electricity has led to a new wave of research on novel batteries made entirely of components that have high natural abundances and are easy to manufacture. One example of such an anode–electrolyte–cathode architecture comprises metallic aluminum, AlCl3:[EMIm]Cl (1‐ethyl‐3‐methylimidazolium chloride) ionic liquid and graphite. Various forms of synthetic and natural graphite cathodes have been tested in recent years in this context. Here, a new type of compelling cathode based on inexpensive pyrene polymers is demonstrated. During charging, the condensed aromatic rings of these polymers are oxidized, which is accompanied by the uptake of aluminum tetrachloride anions (AlCl4−) from the chloroaluminate ionic liquid. Discharge is the fast inverse process of reduction and the release of AlCl4−. The electrochemical properties of the polypyrenes can be fine‐tuned by the appropriate chemical derivatization. This process is showcased here by poly(nitropyrene‐co‐pyrene), which has a storage capacity of 100 mAh g−1, higher than the neat polypyrene (70 mAh g−1) or crystalline pyrene (20 mAh g−1), at a high discharge voltage (≈1.7 V), energy efficiency (≈86%), and cyclic stability (at least 1000 cycles).
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.rights.uri
http://creativecommons.org/licenses/by-nc/4.0/
dc.subject
aluminum batteries
en_US
dc.subject
energy storage
en_US
dc.subject
polypyrenes
en_US
dc.subject
pyrene
en_US
dc.title
Polypyrenes as High-Performance Cathode Materials for Aluminum Batteries
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution-NonCommercial 4.0 International
dc.date.published
2018-03-07
ethz.journal.title
Advanced Materials
ethz.journal.volume
30
en_US
ethz.journal.issue
15
en_US
ethz.journal.abbreviated
Adv Mater
ethz.pages.start
1705644
en_US
ethz.size
6 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Weinheim
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02513 - Laboratorium für Anorganische Chemie / Laboratory of Inorganic Chemistry::03934 - Kovalenko, Maksym / Kovalenko, Maksym
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02020 - Dep. Chemie und Angewandte Biowiss. / Dep. of Chemistry and Applied Biosc.::02513 - Laboratorium für Anorganische Chemie / Laboratory of Inorganic Chemistry::03934 - Kovalenko, Maksym / Kovalenko, Maksym
ethz.date.deposited
2018-04-27T02:59:08Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2018-04-30T11:09:01Z
ethz.rosetta.lastUpdated
2018-12-02T09:52:24Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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