Zobrazeno 1 - 10
of 347
pro vyhledávání: '"Rolf Hempelmann"'
Publikováno v:
Green Energy & Environment, Vol 9, Iss 4, Pp 713-722 (2024)
Aqueous redox-active organic materials-base electrolytes are sustainable alternatives to vanadium-based electrolyte for redox flow batteries (RFBs) due to the advantages of high ionic conductivity, environmentally benign, safety and low cost. However
Externí odkaz:
https://doaj.org/article/2a65e5a6f02b47d4b4b6c09fe2756427
Autor:
Daniel Rauber, Frederik Philippi, Bernd Morgenstern, Josef Zapp, Björn Kuttich, Tobias Kraus, Tom Welton, Rolf Hempelmann, Christopher W.M. Kay
Publikováno v:
Journal of Ionic Liquids, Vol 3, Iss 2, Pp 100060- (2023)
Ionic liquids are modern materials with a broad range of applications, including electrochemical devices, the exploitation of sustainable resources and chemical processing. Expanding the chemical space to include novel ion classes allows for the eluc
Externí odkaz:
https://doaj.org/article/f92b59d36f154103be649c43cbca36d0
Publikováno v:
npj Clean Water, Vol 6, Iss 1, Pp 1-9 (2023)
Abstract A green advanced oxidation (AO) strategy to destroy dye pollutants and remove them from aquatic environments is to utilize sunlight and employ thin-film semiconducting photo-reactors. In this light-driving AO method, besides the type of dye
Externí odkaz:
https://doaj.org/article/a911ab2391474a4fa087da03256f0b54
Publikováno v:
Frontiers in Energy Research, Vol 11 (2023)
A mini-review is provided of the literature concerning the performance of proton-exchange-membrane fuel cells (PEMFCs) containing (immobilized) ionic liquids as possible electrolytes, focusing on papers reporting performance metrics (power and curren
Externí odkaz:
https://doaj.org/article/57a21ab11ca248caa05432b34d24ebe2
Publikováno v:
Polymers, Vol 15, Iss 13, p 2920 (2023)
Phosphorous is an essential element for the life of organisms, and phosphorus-based compounds have many uses in industry, such as flame retardancy reagents, ingredients in fertilizers, pyrotechnics, etc. Ionic liquids are salts with melting points lo
Externí odkaz:
https://doaj.org/article/021d2d96b8f641d38f712eed02008803
Autor:
Andreas Hofmann, Daniel Rauber, Tzu-Ming Wang, Rolf Hempelmann, Christopher W. M. Kay, Thomas Hanemann
Publikováno v:
Molecules, Vol 27, Iss 15, p 4729 (2022)
In this study, we address the fundamental question of the physicochemical and electrochemical properties of phosphonium-based ionic liquids containing the counter-ions bis(trifluoromethanesulfonyl)imide ([TFSI]−) and bis(fluorosulfonyl)imide ([FSI]
Externí odkaz:
https://doaj.org/article/d2a22ca919c44a68becc298db8fc8cc2
Autor:
Daniel Rauber, Andreas Hofmann, Frederik Philippi, Christopher W. M. Kay, Tatiana Zinkevich, Thomas Hanemann, Rolf Hempelmann
Publikováno v:
Applied Sciences, Vol 11, Iss 12, p 5679 (2021)
Ionic liquids are attractive and safe electrolytes for diverse electrochemical applications such as advanced rechargeable batteries with high energy densities. Their properties that are beneficial for energy storage and conversion include negligible
Externí odkaz:
https://doaj.org/article/b6c57efe1e9d4db599e8d19884a17d02
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
Abstract Lignin’s aromatic building blocks provide a chemical resource that is, in theory, ideal for substitution of aromatic petrochemicals. Moreover, degradation and valorization of lignin has the potential to generate many high-value chemicals f
Externí odkaz:
https://doaj.org/article/c02d82018e7640c897f568a29c1157d4
Autor:
Luigi A. Urtis, Andrea Arcifa, Peng Zhang, Junxiao Du, Marzia Fantauzzi, Daniel Rauber, Rolf Hempelmann, Tobias Kraus, Antonella Rossi, Nicholas D. Spencer
Publikováno v:
Lubricants, Vol 7, Iss 3, p 27 (2019)
This work aims to elucidate the role of environmental humidity on the tribological behavior of steel surfaces lubricated with an ionic liquid comprised of a fluorinated phosphonium cation—tributyl-3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluoro-octyl-phosp
Externí odkaz:
https://doaj.org/article/5504f209f45843098b4f6eae8d3a4e0b
Autor:
Rolf Hempelmann
Progress in Physical Chemistry is a collection of recent “Review Articles” published in the “Zeitschrift für Physikalische Chemie”. The aim of a “Review article” is to give a profound survey on a special topic outlining the history, deve