Zobrazeno 1 - 10
of 152
pro vyhledávání: '"Johan Hjelm"'
Autor:
Benedikt Axel Brandes, Yogeshwaran Krishnan, Fabian Luca Buchauer, Heine Anton Hansen, Johan Hjelm
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-12 (2024)
Abstract Common half-cell measurements deliver oxygen reduction activities linked to the chosen scan rate, limiting their value for fundamental and comparative studies on platinum. Here we show a deconvolution of the intrinsic kinetics from the effec
Externí odkaz:
https://doaj.org/article/1bde7f6d145d43cfad4e0c944f87b803
Publikováno v:
Molecules, Vol 26, Iss 8, p 2227 (2021)
The aqueous redox flow battery is a promising technology for large-scale low cost energy storage. The rich possibilities for the tailoring of organic molecules and the possibility to discover active materials of lower cost and decreased environmental
Externí odkaz:
https://doaj.org/article/287aeeb27102412ea481976b0ba6dcd0
Publikováno v:
Journal of Systemics, Cybernetics and Informatics, Vol 4, Iss 5, Pp 55-61 (2006)
Peer-to-peer has entered the public limelight over the last few years. Several research projects are underway on peer-to-peer technologies, but no definitive conclusion is currently available. Compared with traditional Internet technologies, peer-to-
Externí odkaz:
https://doaj.org/article/5864ff4a34004c5cafc535beb9d8a3f1
The ORR is the key reaction in the development of catalysts for hydrogen fuel cells. In the development of new catalysts, a reliable assessment of their kinetic properties is crucial. However, the common half-cell RDE protocol delivers ORR activities
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ee0e2b685d9d31dd92684bb5cb50d2f
https://doi.org/10.21203/rs.3.rs-2709219/v1
https://doi.org/10.21203/rs.3.rs-2709219/v1
Publikováno v:
Chemphyschem, 24(4):e202200779. WILEY-V C H VERLAG GMBH
Steen, J S, De Vries, F, Hjelm, J & Otten, E 2023, ' Bipolar Verdazyl Radicals for Symmetrical Batteries : Properties and Stability in All States of Charge ', ChemPhysChem, vol. 24, no. 4, e202200779 . https://doi.org/10.1002/cphc.202200779
Steen, J S, De Vries, F, Hjelm, J & Otten, E 2023, ' Bipolar Verdazyl Radicals for Symmetrical Batteries : Properties and Stability in All States of Charge ', ChemPhysChem, vol. 24, no. 4, e202200779 . https://doi.org/10.1002/cphc.202200779
Redox flow batteries based on organic electrolytes are promising energy storage devices, but stable long-term cycling is often difficult to achieve. Bipolar organic charge-storage materials allow the construction of symmetrical flow batteries (i. e.,
Autor:
James N. McPherson, Mathias Lander Skavenborg, Johan Hjelm, Christine McKenzie, Alexandros Pasadakis-Kavounis, T. David Waite
Publikováno v:
Skavenborg, M L, McPherson, J N, Pasadakis-Kavounis, A, Hjelm, J, Waite, T D & McKenzie, C J 2022, ' Leveraging coordination chemistry in the design of bipolar energy storage materials for redox flow batteries ', Sustainable Energy and Fuels, vol. 6, no. 9, pp. 2179-2190 . https://doi.org/10.1039/d1se01966j
Tuned by the ligand field, some single metal atoms in coordination complexes can offer two redox processes with a large potential difference, a key characteristic of symmetrical redox flow batteries (RFBs). We have designed a new anionic tridentate l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0bd89e4e3485fe9b6ff57143ee96bb7
https://portal.findresearcher.sdu.dk/da/publications/c3576706-a855-4b53-bee3-d03a7de5b434
https://portal.findresearcher.sdu.dk/da/publications/c3576706-a855-4b53-bee3-d03a7de5b434
Autor:
Lina Lago, Helene Elvstrand, Katharina Hertz, Johan Hjelm, Klas Johansson, Micaela Petersson, Christoffer Andersson, Oscar Arnryd, Jamila Eichouh, Kajsa Nilsson, Anton Wållberg
Vad är kärnan i fritidshemmets undervisning, hur kan fritidspedagogiska förhållningssätt synliggöras och utvecklas och vad kräver det för lärarposition? Sådana frågor har varit utgångspunkt för det ULF-projekt som presenteras i denna art
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce87b8f61a58953ab3aaf5b80d436bef
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-182402
http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-182402
Autor:
Jelte Steen, Jules Nuismer, Vytautas Eiva, Albert Wiglema, Nicolas Daub, Johan Hjelm, Edwin Otten
Redox-active organic molecules are promising charge-storage materials for redox-flow batteries (RFBs), but material crossover between posolyte/negolyte and chemical degradation are limiting factors in the performance of all-organic RFBs. We demonstra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::37092360f276bed991bd7d279af6081d
https://doi.org/10.26434/chemrxiv-2021-d0szn
https://doi.org/10.26434/chemrxiv-2021-d0szn
Publikováno v:
Fornari, R P, Mesta, M, Hjelm, J, Vegge, T & de Silva, P 2020, ' Molecular Engineering Strategies for Symmetric Aqueous Organic Redox Flow Batteries ', ACS Materials Letters, vol. 2, no. 3, pp. 239-246 . https://doi.org/10.1021/acsmaterialslett.0c00028
Symmetric aqueous organic redox flow batteries (RFBs) are potentially a cheap, durable and safe energy storage technology. Unlike normal asymmetric flow batteries, they are based on electrolytes that exist in at least three oxidation states and can u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bad1254a3afa0f3aea377c93f0309ac
https://orbit.dtu.dk/en/publications/0971eddd-28d2-48a6-90ef-0551352872ea
https://orbit.dtu.dk/en/publications/0971eddd-28d2-48a6-90ef-0551352872ea
Publikováno v:
Sjödin, M, Hjelm, J, Rutherford, A W & Forster, R 2020, ' Proton-coupled electron transfer from an interfacial phenol monolayer ', Journal of Electroanalytical Chemistry, vol. 859, 113856 . https://doi.org/10.1016/j.jelechem.2020.113856
A tert-butyl protected phenol is covalently link to a mixed self-assembled monolayer on a gold or platinum electrode. The phenol reduction potential shows the expected pH-dependence of a one-electron, one-proton couple with a decrease in formal reduc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed0b1689d550a93f07b0dace49972e09
https://orbit.dtu.dk/en/publications/a39295f0-1790-47b0-b526-1c763c626c3f
https://orbit.dtu.dk/en/publications/a39295f0-1790-47b0-b526-1c763c626c3f