Zobrazeno 1 - 10
of 611
pro vyhledávání: '"David A. Cullen"'
Autor:
Longsheng Cao, Fernando A. Soto, Dan Li, Tao Deng, Enyuan Hu, Xiner Lu, David A. Cullen, Nico Eidson, Xiao-Qing Yang, Kai He, Perla B. Balbuena, Chunsheng Wang
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-11 (2024)
Abstract Hydrogen oxidation reaction in alkaline media is critical for alkaline fuel cells and electrochemical ammonia compressors. The slow hydrogen oxidation reaction in alkaline electrolytes requires large amounts of scarce and expensive platinum
Externí odkaz:
https://doaj.org/article/b49792e5a55847f191026d571c07611c
Autor:
Lei Ding, Kui Li, Weitian Wang, Zhiqiang Xie, Shule Yu, Haoran Yu, David A. Cullen, Alex Keane, Kathy Ayers, Christopher B. Capuano, Fangyuan Liu, Pu-Xian Gao, Feng-Yuan Zhang
Publikováno v:
Nano-Micro Letters, Vol 16, Iss 1, Pp 1-15 (2024)
Highlights Electrodeposited amorphous IrO x thin electrodes are first developed for proton exchange membrane electrolyzer cells. An ultralow loading of 0.075 mg cm−2 archives superior performance to catalyst-coated membrane (2 mg cm−2). > 96% of
Externí odkaz:
https://doaj.org/article/fd5c5761227f43da84b975f14c559f2a
Autor:
Leiming Hu, Jacob A. Wrubel, Carlos M. Baez-Cotto, Fry Intia, Jae Hyung Park, Arthur Jeremy Kropf, Nancy Kariuki, Zhe Huang, Ahmed Farghaly, Lynda Amichi, Prantik Saha, Ling Tao, David A. Cullen, Deborah J. Myers, Magali S. Ferrandon, K. C. Neyerlin
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-11 (2023)
Abstract The electrochemical reduction of carbon dioxide to formic acid is a promising pathway to improve CO2 utilization and has potential applications as a hydrogen storage medium. In this work, a zero-gap membrane electrode assembly architecture i
Externí odkaz:
https://doaj.org/article/26b2fbd1e11b483aad4a891ac2256c20
Autor:
Sophia Pells, David M. Cullen, Daniel Deidda, Ana M. Denis-Bacelar, Andrew Fenwick, Kelley M. Ferreira, David Hamilton, Warda Heetun, Peter Julyan, George Needham, Ben Pietras, Emlyn Price, James Scuffham, Jill Tipping, Andrew P. Robinson
Publikováno v:
EJNMMI Physics, Vol 10, Iss 1, Pp 1-25 (2023)
Abstract Background Monte Carlo (MC) simulations are used in nuclear medicine imaging as they provide unparalleled insight into processes that are not directly experimentally measurable, such as scatter and attenuation in an acquisition. Whilst MC is
Externí odkaz:
https://doaj.org/article/59bec3b36c8b4b62a5023d30c16236fa
Autor:
Jason K. Lee, Grace Anderson, Andrew W. Tricker, Finn Babbe, Arya Madan, David A. Cullen, José’ D. Arregui-Mena, Nemanja Danilovic, Rangachary Mukundan, Adam Z. Weber, Xiong Peng
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-11 (2023)
Abstract Clean hydrogen production requires large-scale deployment of water-electrolysis technologies, particularly proton-exchange-membrane water electrolyzers (PEMWEs). However, as iridium-based electrocatalysts remain the only practical option for
Externí odkaz:
https://doaj.org/article/071f8d32aed64a4dbc7d801f748dc112
Autor:
Lei Ding, Zhiqiang Xie, Shule Yu, Weitian Wang, Alexander Y. Terekhov, Brian K. Canfield, Christopher B. Capuano, Alex Keane, Kathy Ayers, David A. Cullen, Feng-Yuan Zhang
Publikováno v:
Nano-Micro Letters, Vol 15, Iss 1, Pp 1-18 (2023)
Highlights 4-nm-thick Pt nanosheets (Pt-NSs) are electrochemically grown on Ti substrates for hydrogen evolution reactions. Highly uniform Pt-NS surface coverage with an ultralow loading of 0.015 mgPt cm−2 is achieved. 99.5% catalyst savings and ab
Externí odkaz:
https://doaj.org/article/7075cd599d034745973720e17af2f349
Autor:
Hao Wang, Luigi Osmieri, Haoran Yu, Michael J. Zachman, Jae Hyung Park, Nancy N. Kariuki, Firat C. Cetinbas, Sunilkumar Khandavalli, Scott Mauger, Deborah J. Myers, David A. Cullen, Kenneth C. Neyerlin
Publikováno v:
SusMat, Vol 3, Iss 1, Pp 72-90 (2023)
Abstract Leveraging the interactions between ionomer and catalyst can increase the performance of proton exchange membrane fuel cells. The impacts of the equivalent weight (EW) of perfluorosulfonic acid–based ionomers on the platinum group metal‐
Externí odkaz:
https://doaj.org/article/20250a314f8b40d6b4e8f633620d9bee
Autor:
Deng-Bing Li, Sandip S. Bista, Rasha A. Awni, Sabin Neupane, Abasi Abudulimu, Xiaoming Wang, Kamala K. Subedi, Manoj K. Jamarkattel, Adam B. Phillips, Michael J. Heben, Jonathan D. Poplawsky, David A. Cullen, Randy J. Ellingson, Yanfa Yan
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-8 (2022)
Bandgap gradient is a promising approach to improve the open-circuit voltage in thin film solar cells. Here, authors incorporate a Cd(O,S,Se,Te) region to realize the bandgap gradient at front interface and demonstrate Cd(Se,Te) solar cells with redu
Externí odkaz:
https://doaj.org/article/67ffddd34caa480db3f4224fd8cedd68
Autor:
Zhen-Yu Wu, Mohammadreza Karamad, Xue Yong, Qizheng Huang, David A. Cullen, Peng Zhu, Chuan Xia, Qunfeng Xiao, Mohsen Shakouri, Feng-Yang Chen, Jung Yoon (Timothy) Kim, Yang Xia, Kimberly Heck, Yongfeng Hu, Michael S. Wong, Qilin Li, Ian Gates, Samira Siahrostami, Haotian Wang
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021)
Developing green and delocalized routes for ammonia synthesis is highly important but still very challenging. Here the authors report an efficient ammonia synthesis process via nitrate reduction to ammonia on Fe single atom catalyst.
Externí odkaz:
https://doaj.org/article/3838a762811c4c7abb286aabd9dce6c0
Autor:
Qing Gong, Hong Zhang, Haoran Yu, Sungho Jeon, Yang Ren, Zhenzhen Yang, Cheng-Jun Sun, Eric A. Stach, Alexandre C. Foucher, Yikang Yu, Matthew Smart, Gabriel M. Filippelli, David A. Cullen, Ping Liu, Jian Xie
Publikováno v:
Matter. 6:963-982
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb595886ce3889029e15e66e12e2cf57
https://doi.org/10.1016/j.matt.2022.12.011
https://doi.org/10.1016/j.matt.2022.12.011