Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Lis G. A. Melo"'
Autor:
Adam P. Hitchcock, Isaac Martens, M. Marcia West, David P. Wilkinson, Lis G. A. Melo, Dan Bizzotto
Publikováno v:
ACS Catalysis. 10:8285-8292
The interface between perfluorosulfonic acid polymer electrolytes and Pt nanoparticles in a model hydrogen fuel cell catalyst layer was analyzed using high-resolution scanning transmission x-ray mi...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd18e7958a87b5a4d4eb23779ba55853
https://doi.org/10.1021/acscatal.0c01594
https://doi.org/10.1021/acscatal.0c01594
Publikováno v:
Microscopy and Microanalysis. 26:2072-2074
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6ae1e453b902126c8371e9e1eaa39b2c
https://doi.org/10.1017/s1431927620020346
https://doi.org/10.1017/s1431927620020346
Publikováno v:
The Journal of Physical Chemistry C. 123:16023-16033
Polymer electrolytes such as perfluorosulfonic acid (PFSA) are key to a variety of electrochemical and clean energy applications. Many analytical techniques for characterizing nanostructured device...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::568a4d2c3c95ff25d282b81bc6e2070c
https://doi.org/10.1021/acs.jpcc.9b03924
https://doi.org/10.1021/acs.jpcc.9b03924
Autor:
Adam P. Hitchcock, Lis G. A. Melo
Publikováno v:
Micron. 121:8-20
Scanning transmission X-ray microscopy (STXM) was used to study chemical changes to perfluorosulfonic acid (PFSA) spun cast thin films as a function of dose imparted by exposure of a 200 kV electron beam in a Transmission Electron Microscope (TEM). T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3f8dd00e7b82df9959aeccfe2624725
https://doi.org/10.1016/j.micron.2019.02.006
https://doi.org/10.1016/j.micron.2019.02.006
Publikováno v:
Journal of synchrotron radiation. 28(Pt 3)
X-ray absorption is a sensitive and versatile tool for chemical speciation. However, when high doses are used, the absorbed energy can change the composition, amount and structure of the native material, thereby changing the aspects of the absorption
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22d982b42730a2f8be2e8774cc0b95da
https://pubmed.ncbi.nlm.nih.gov/33949991
https://pubmed.ncbi.nlm.nih.gov/33949991
Autor:
Xiaohui Zhu, Adam P. Hitchcock, M. Marcia West, Juergen Stumper, Viatcheslav Berejnov, Darija Susac, Lis G. A. Melo, Juan Wu
Publikováno v:
Journal of Power Sources. 381:72-83
4D imaging - the three-dimensional distributions of chemical species determined using multi-energy X-ray tomography - of cathode catalyst layers of polymer electrolyte membrane fuel cells (PEM-FC) has been measured by scanning transmission x-ray micr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bba377d75fa3c9e168f9075e94f4d6b2
https://doi.org/10.1016/j.jpowsour.2018.01.074
https://doi.org/10.1016/j.jpowsour.2018.01.074
Publikováno v:
The Journal of Physical Chemistry C. 122:3233-3244
19F and 13C solid-state nuclear magnetic resonance (SSNMR) spectra and near edge X-ray absorption fine structure (NEXAFS) spectra at the S 2p, C 1s, O 1s, and F 1s edges of three different types of perfluorosulfonic acid (PFSA) proton conducting poly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f7f72325426950bc6dbae74fbd495ff
https://doi.org/10.1021/acs.jpcc.7b11592
https://doi.org/10.1021/acs.jpcc.7b11592
Autor:
Jasna Jankovic, Adam P. Hitchcock, Viatcheslav Berejnov, Lis G. A. Melo, Jürgen Stumper, Darija Susac
Publikováno v:
ECS Transactions. 80:275-282
The perfluorosulfonic acid (PFSA) ionomer commonly used in Polymer Electrolyte Membrane Fuel Cells (PEM-FC) consists of a hydrophobic tetrafluoroethylene backbone with side chains terminated with sulfonate groups responsible for proton conduction. Op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::045b79e887abc5e56fe9ab510bde349d
https://doi.org/10.1149/08008.0275ecst
https://doi.org/10.1149/08008.0275ecst
Publikováno v:
Micron (Oxford, England : 1993). 120
Focused ion beam coupled with scanning electron microscopy (FIB-SEM) is a popular technique for advanced electron microscopy with applications such as, high-precision site-specific lamella sample preparation for transmission electron microscopy (TEM)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d2c9e36ea7d6be235416d28d8199eb0
https://pubmed.ncbi.nlm.nih.gov/30802756
https://pubmed.ncbi.nlm.nih.gov/30802756
Autor:
Viatcheslav Berejnov, Lis G. A. Melo, Gianluigi A. Botton, Juergen Stumper, Darija Susac, Adam P. Hitchcock
Publikováno v:
Journal of Power Sources. 312:23-35
Optimizing the structure of the porous electrodes of polymer electrolyte membrane fuel cells (PEM-FC) can improve device power and durability. Analytical microscopy techniques are important tools for measuring the electrode structure, thereby providi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::504c64366db04cf1faeb22cdf908d583
https://doi.org/10.1016/j.jpowsour.2016.02.019
https://doi.org/10.1016/j.jpowsour.2016.02.019